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Wang ZJ, Kong X, Huang Y, Li J, Bao L, Cao K, Hu Y, Cai J, Wang L, Chen H, Wu Y, Zhang Y, Pang F, Cheng Z, Babor P, Kolibal M, Liu Z, Chen Y, Zhang Q, Cui Y, Liu K, Yang H, Bao X, Gao HJ, Liu Z, Ji W, Ding F, Willinger MG. Conversion of chirality to twisting via sequential one-dimensional and two-dimensional growth of graphene spirals. Nat Mater 2024; 23:331-338. [PMID: 37537355 DOI: 10.1038/s41563-023-01632-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Accepted: 07/10/2023] [Indexed: 08/05/2023]
Abstract
The properties of two-dimensional (2D) van der Waals materials can be tuned through nanostructuring or controlled layer stacking, where interlayer hybridization induces exotic electronic states and transport phenomena. Here we describe a viable approach and underlying mechanism for the assisted self-assembly of twisted layer graphene. The process, which can be implemented in standard chemical vapour deposition growth, is best described by analogy to origami and kirigami with paper. It involves the controlled induction of wrinkle formation in single-layer graphene with subsequent wrinkle folding, tearing and re-growth. Inherent to the process is the formation of intertwined graphene spirals and conversion of the chiral angle of 1D wrinkles into a 2D twist angle of a 3D superlattice. The approach can be extended to other foldable 2D materials and facilitates the production of miniaturized electronic components, including capacitors, resistors, inductors and superconductors.
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Affiliation(s)
- Zhu-Jun Wang
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, China.
- School of Natural Sciences, Technical University Munich, Munich, Germany.
- Center for Transformative Science, ShanghaiTech University, Shanghai, China.
| | - Xiao Kong
- Institute of Technology for Carbon Neutrality, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
- Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, China
| | - Yuan Huang
- Institute of Physics, Chinese Academy of Sciences, Beijing, China
- Advanced Research Institute of Multidisciplinary Science, Beijing Institute of Technology, Beijing, China
| | - Jun Li
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, China
- ShanghaiTech Laboratory for Topological Physics, ShanghaiTech University, Shanghai, China
| | - Lihong Bao
- Institute of Physics, Chinese Academy of Sciences, Beijing, China
| | - Kecheng Cao
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, China
| | - Yuxiong Hu
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, China
| | - Jun Cai
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, China
| | - Lifen Wang
- Institute of Physics, Chinese Academy of Sciences, Beijing, China
| | - Hui Chen
- Institute of Physics, Chinese Academy of Sciences, Beijing, China
| | - Yueshen Wu
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, China
- ShanghaiTech Laboratory for Topological Physics, ShanghaiTech University, Shanghai, China
| | - Yiwen Zhang
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, China
- ShanghaiTech Laboratory for Topological Physics, ShanghaiTech University, Shanghai, China
| | - Fei Pang
- Beijing Key Laboratory of Optoelectronic Functional Materials & Micro-Nano Devices, Department of Physics, Renmin University of China, Beijing, China
| | - Zhihai Cheng
- Beijing Key Laboratory of Optoelectronic Functional Materials & Micro-Nano Devices, Department of Physics, Renmin University of China, Beijing, China
| | - Petr Babor
- Institute of Physical Engineering, Faculty of Mechanical Engineering, Brno University of Technology, Brno, Czech Republic
- Central European Institute of Technology (CEITEC), Brno University of Technology, Brno, Czech Republic
| | - Miroslav Kolibal
- Institute of Physical Engineering, Faculty of Mechanical Engineering, Brno University of Technology, Brno, Czech Republic
- Central European Institute of Technology (CEITEC), Brno University of Technology, Brno, Czech Republic
| | - Zhongkai Liu
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, China
- Advanced Research Institute of Multidisciplinary Science, Beijing Institute of Technology, Beijing, China
| | - Yulin Chen
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, China
- Advanced Research Institute of Multidisciplinary Science, Beijing Institute of Technology, Beijing, China
- Department of Physics, University of Oxford, Oxford, UK
- State Key Laboratory of Low Dimensional Quantum Physics and Department of Physics, Tsinghua University, Beijing, China
| | - Qiang Zhang
- Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing, China
| | - Yi Cui
- Vacuum Interconnected Nanotech Workstation, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, China
| | - Kaihui Liu
- State Key Laboratory for Mesoscopic Physics, Frontiers Science Center for Nano-optoelectronics, School of Physics, Peking University, Beijing, China
- International Center for Quantum Materials, Collaborative Innovation Center of Quantum Matter, Peking University, Beijing, China
| | - Haitao Yang
- Institute of Physics, Chinese Academy of Sciences, Beijing, China
| | - Xinhe Bao
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
| | - Hong-Jun Gao
- Institute of Physics, Chinese Academy of Sciences, Beijing, China
- School of Physical Sciences, University of the Chinese Academy of Sciences, Beijing, China
- CAS Center for Excellence in Topological Quantum Computation, University of the Chinese Academy of Sciences, Beijing, China
| | - Zhi Liu
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, China
- Center for Transformative Science, ShanghaiTech University, Shanghai, China
| | - Wei Ji
- Beijing Key Laboratory of Optoelectronic Functional Materials & Micro-Nano Devices, Department of Physics, Renmin University of China, Beijing, China.
| | - Feng Ding
- Institute of Technology for Carbon Neutrality, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China.
- Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, China.
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Chen B, Meng K, Qiao Z, Zhai Y, Yu R, Fang Z, Yan P, Xiao M, Pan L, Zheng L, Cao K, Chen G. Surface Crystallization Modulation toward Highly-Oriented and Phase-Pure 2D Perovskite Solar Cells. Adv Mater 2024:e2312054. [PMID: 38327173 DOI: 10.1002/adma.202312054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 01/26/2024] [Indexed: 02/09/2024]
Abstract
2D perovskites have shown great potential toward stable and efficient photovoltaic devices. However, the crystal orientation and phase impurity issues of 2D perovskite films originating from the anisotropic crystal structure and specific growth mechanism have demoted their optoelectronic performances. Here, the surface crystallization modulation technique is introduced to fabricate the high-quality 2D perovskite films with both vertical crystal orientation and high phase purity by regulating the crystallization dynamics. The solvent atmosphere condition is instituted during film processing, which promotes the formation of an oriented 2D perovskite layer in stoichiometric composition at the vapor-liquid interface and templates the subsequent film growth. The solar cells based on the optimized 2D perovskite films exhibit a power conversion efficiency of 15.04%, the record for 2D perovskites (with the perovskite slab thickness n ≤ 3 and high phase purity). The solar cells based on the highly-oriented and phase-pure 2D perovskite films also demonstrate excellent thermal and humidity stabilities.
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Affiliation(s)
- Bin Chen
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
| | - Ke Meng
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
| | - Zhi Qiao
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
| | - Yufeng Zhai
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
| | - Runze Yu
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
| | - Zhu Fang
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
| | - Pu Yan
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
| | - Mingyue Xiao
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
| | - Li Pan
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
| | - Liya Zheng
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
| | - Kecheng Cao
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
| | - Gang Chen
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
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Liu S, Teng Y, Zhang Z, Lai J, Hu Z, Zhang W, Zhang W, Zhu J, Wang X, Li Y, Zhao J, Zhang Y, Qiu S, Zhou W, Cao K, Chen Q, Kang L, Li Q. Interlayer Charge Transfer Induced Electrical Behavior Transition in 1D AgI@sSWCNT van der Waals Heterostructures. Nano Lett 2024; 24:741-747. [PMID: 38166145 DOI: 10.1021/acs.nanolett.3c04298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2024]
Abstract
The emergence of one-dimensional van der Waals heterostructures (1D vdWHs) opens up potential fields with unique properties, but precise synthesis remains a challenge. The utilization of mixed conductive types of carbon nanotubes as templates has imposed restrictions on the investigation of the electrical behavior and interlayer interaction of 1D vdWHs. In this study, we efficiently encapsulated silver iodide in high-purity semiconducting single-walled carbon nanotubes (sSWCNTs), forming 1D AgI@sSWCNT vdWHs. We characterized the semiconductor-metal transition and increased the carrier concentration of individual AgI@sSWCNTs via sensitive dielectric force microscopy and confirmed the results through electrical device tests. The electrical behavior transition was attributed to an interlayer charge transfer, as demonstrated by Kelvin probe force microscopy. Furthermore, we showed that this method of synthesizing 1D heterostructures can be extended to other metal halides. This work opens the door for the further exploration of the electrical properties of 1D vdWHs.
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Affiliation(s)
- Shuai Liu
- School of Physical Science and Technology, ShanghaiTech University, 393 Middle Huaxia Road, Shanghai, 201210, China
- Advanced Materials Division, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, 398 Ruoshui Road, Suzhou 215123, China
| | - Yu Teng
- Advanced Materials Division, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, 398 Ruoshui Road, Suzhou 215123, China
- School of Nano Science and Technology, University of Science and Technology of China, 96 Jinzhai Road, Hefei 230026, China
| | - Zhen Zhang
- Advanced Materials Division, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, 398 Ruoshui Road, Suzhou 215123, China
| | - Junqi Lai
- i-Lab, CAS Key Laboratory of Nanophotonic Materials and Devices, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, 398 Ruoshui Road, Suzhou 215123, China
| | - Ziyi Hu
- Advanced Materials Division, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, 398 Ruoshui Road, Suzhou 215123, China
| | - Wendi Zhang
- School of Physical Science and Technology, ShanghaiTech University, 393 Middle Huaxia Road, Shanghai, 201210, China
| | - Wujun Zhang
- Advanced Materials Division, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, 398 Ruoshui Road, Suzhou 215123, China
| | - Juntong Zhu
- Advanced Materials Division, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, 398 Ruoshui Road, Suzhou 215123, China
- School of Physical Sciences, CAS Key Laboratory of Vacuum Physics, University of the Chinese Academy of Sciences, Beijing 100190, China
| | - Xiujun Wang
- Advanced Materials Division, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, 398 Ruoshui Road, Suzhou 215123, China
| | - Yunfei Li
- Advanced Materials Division, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, 398 Ruoshui Road, Suzhou 215123, China
| | - Jintao Zhao
- Advanced Materials Division, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, 398 Ruoshui Road, Suzhou 215123, China
- School of Nano Science and Technology, University of Science and Technology of China, 96 Jinzhai Road, Hefei 230026, China
| | - Yong Zhang
- Advanced Materials Division, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, 398 Ruoshui Road, Suzhou 215123, China
| | - Song Qiu
- Advanced Materials Division, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, 398 Ruoshui Road, Suzhou 215123, China
| | - Wu Zhou
- School of Physical Sciences, CAS Key Laboratory of Vacuum Physics, University of the Chinese Academy of Sciences, Beijing 100190, China
| | - Kecheng Cao
- School of Physical Science and Technology, ShanghaiTech University, 393 Middle Huaxia Road, Shanghai, 201210, China
| | - Qi Chen
- i-Lab, CAS Key Laboratory of Nanophotonic Materials and Devices, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, 398 Ruoshui Road, Suzhou 215123, China
| | - Lixing Kang
- Advanced Materials Division, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, 398 Ruoshui Road, Suzhou 215123, China
| | - Qingwen Li
- School of Physical Science and Technology, ShanghaiTech University, 393 Middle Huaxia Road, Shanghai, 201210, China
- Advanced Materials Division, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, 398 Ruoshui Road, Suzhou 215123, China
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Jin Y, Cao K, Wang ZJ, Han JG. [Research progress of bariatric and metabolic surgery in the prevention of gastroesophageal reflux disease]. Zhonghua Wei Chang Wai Ke Za Zhi 2023; 26:1088-1098. [PMID: 37974356 DOI: 10.3760/cma.j.cn441530-20230216-00039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 11/19/2023]
Abstract
Gastroesophageal reflux disease (GERD) is a common digestive tract disease. Obesity is an independent risk factor for GERD. Laparoscopic sleeve gastrectomy (laparoscopic sleeve gastrectomy, LSG) is becoming more popular in bariatric metabolic surgery and is simple to perform with fewer complications, but its efficacy in treating postoperative anti-reflux in obese patients remains controversial. LSG has been reported to disrupt anti-reflux barrier function, such as altered cardiac notch, disruption of diaphragmatic continuity, and increased hiatal hernia after surgery. The cardiac notch is one of the important anti-reflux barriers at the gastroesophageal junction, and its accentuation has been shown to be effective in alleviating the symptoms of GERD, and LSG combined with angle of cardiac notch accentuation is expected to be an effective measure to prevent GERD after obesity surgery. Therefore, this article mainly reviews the research on the prevention of GERD by bariatric surgery, aiming to explore the effective treatment of GERD in obese patients after surgery, so as to improve the symptoms and quality of life of patients with GERD, and provide reference for the surgical treatment of GERD.
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Affiliation(s)
- Y Jin
- Department of General Surgery, Beijing Chaoyang Hosptial, Capital Medical University, Beijing 100020, China
| | - K Cao
- Department of General Surgery, Beijing Chaoyang Hosptial, Capital Medical University, Beijing 100020, China
| | - Z J Wang
- Department of General Surgery, Beijing Chaoyang Hosptial, Capital Medical University, Beijing 100020, China
| | - J G Han
- Department of General Surgery, Beijing Chaoyang Hosptial, Capital Medical University, Beijing 100020, China
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Feng B, Chen X, Yan P, Huang S, Lu C, Ji H, Zhu J, Yang Z, Cao K, Zhuang X. Isomeric Dual-Pore Two-Dimensional Covalent Organic Frameworks. J Am Chem Soc 2023. [PMID: 37968832 DOI: 10.1021/jacs.3c09559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2023]
Abstract
Two-dimensional (2D) covalent organic frameworks (COFs) with hierarchical porosity have been increasingly recognized as promising materials in various fields. Besides, the 2D COFs with kagome (kgm) topology can exhibit unique optoelectronic features and have extensive applications. However, rational synthesis of the COFs with kgm topology remains challenging because of competition with a square-lattice topology. Herein, we report two isomeric dual-pore 2D COFs with kgm topology using a novel geometric strategy to reduce the symmetry of their building blocks, which are four-armed naphthalene-based and azulene-based isomeric monomers. Owing to the large dipole moment of azulene, as-prepared azulene-based COF (COF-Az) possesses a considerably narrow band gap of down to 1.37 eV, which is much narrower than the naphthalene-based 2D COF (COF-Nap: 2.28 eV) and is the lowest band gap among reported imine-linked dual-pore 2D COFs. Moreover, COF-Az was used as electrode material in a gas sensor and exhibits high selectivity for NO2, including a high response rate (58.7%) to NO2 (10 ppm), fast recovery (72 s), up to 10 weeks of stability, and resistance to 80% relative humidity, which are superior to those of reported COF-based NO2 gas sensors. The calculation and in situ experimental results indicate that the large dipole moment of azulene boosts the sensitivity of the imine linkages. The usage of isomeric building blocks not only enables the synthesis of 2D COFs with isometric kgm topology but also provides an azulene-based 2D platform for studying the structure-property correlations of COFs.
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Affiliation(s)
- Boxu Feng
- The Soft2D Lab, State Key Laboratory of Metal Matrix Composites, Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Xiyu Chen
- Key Laboratory of Thin Film and Microfabrication (Ministry of Education), Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Pu Yan
- School of Physical Science and Technology & Shanghai Key Laboratory of High-resolution Electron Microscopy, ShanghaiTech University, Shanghai 201210, China
| | - Senhe Huang
- The Soft2D Lab, State Key Laboratory of Metal Matrix Composites, Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Chenbao Lu
- The Soft2D Lab, State Key Laboratory of Metal Matrix Composites, Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Huiping Ji
- The Soft2D Lab, State Key Laboratory of Metal Matrix Composites, Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Jinhui Zhu
- The Soft2D Lab, State Key Laboratory of Metal Matrix Composites, Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Zhi Yang
- Key Laboratory of Thin Film and Microfabrication (Ministry of Education), Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Kecheng Cao
- School of Physical Science and Technology & Shanghai Key Laboratory of High-resolution Electron Microscopy, ShanghaiTech University, Shanghai 201210, China
| | - Xiaodong Zhuang
- The Soft2D Lab, State Key Laboratory of Metal Matrix Composites, Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
- Frontiers Science Center for Transformative Molecules, Zhang Jiang Institute for Advanced Study, Shanghai Jiao Tong University, Shanghai 201203, China
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Xie S, Fan L, Chen Y, Cai J, Wu F, Cao K, Liu P. Phase transition behaviour and mechanism of 2D TiO 2(B) nanosheets through water-mediated removal of surface ligands. Dalton Trans 2023; 52:15590-15596. [PMID: 37791741 DOI: 10.1039/d3dt02752j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/05/2023]
Abstract
Phase engineering is a central subject in materials research. The recent research interest in the phase transition behavior of atomically thin 2D materials reveals the important role of their surface chemistry. In this study, we investigated the phase transformation of ultrathin TiO2(B) nanosheets to anatase under different conditions. We found that the convenient transformation in water under ambient conditions is driven by the hydrolysis of surface 1,2-ethylenedioxy groups and departure of ethylene glycol. A transformation pathway through the formation of protonic titanate is proposed. The ultrathin structure and the metastable nature of the precursor facilitate the phase conversion to anatase. Our finding offers a new insight into the mechanism of TiO2(B) phase transition from the viewpoint of surface chemistry and may contribute to the potential application of ultrathin TiO2(B) nanosheets in aqueous environments.
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Affiliation(s)
- Shirui Xie
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, China.
| | - Lijing Fan
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, China.
| | - Yanxin Chen
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, China.
| | - Jiliang Cai
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, China.
| | - Fan Wu
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, China.
| | - Kecheng Cao
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, China.
| | - Pengxin Liu
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, China.
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Li Y, Li A, Li J, Tian H, Zhang Z, Zhu S, Zhang R, Liu S, Cao K, Kang L, Li Q. Efficient Synthesis of Highly Crystalline One-Dimensional CrCl 3 Atomic Chains with a Spin Glass State. ACS Nano 2023; 17:20112-20119. [PMID: 37791779 DOI: 10.1021/acsnano.3c05819] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/05/2023]
Abstract
One-dimensional (1D) magnetic material systems have attracted widespread interest from researchers because of their peculiar physical properties and potential applications in spintronics devices. However, the synthesis of 1D magnetic atomic chains has seldom been investigated. Here, we developed an iodine-assisted vacuum chemical vapor-phase transport (I-VCVT) method, utilizing single-walled carbon nanotubes (SWCNTs) with 1D cavities as templates, and high-quality and high-efficiency fabrication of 1D atomic chains of CrCl3 was achieved. Furthermore, the structure of CrCl3 atomic chains in the confined space of SWCNTs was analyzed in detail, and the charge transfer between the 1D atomic chains and SWCNTs was investigated through spectroscopic characterization. A comprehensive study of the dynamic magnetic properties revealed the existence of spin glass states and freezing of the 1D CrCl3 atomic chains at around 3 K, which has never been seen in bulk CrCl3. Our work established an effective strategy for the control synthesis of 1D magnetic atomic chains with promising potential applications in further magnetic-based spintronics devices.
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Affiliation(s)
- Yunfei Li
- School of Nano-Tech and Nano-Bionics, University of Science and Technology of China, Hefei 230026, China
- Division of Advanced Materials, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China
| | - Alei Li
- Division of Advanced Materials, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China
| | - Jing Li
- Division of Advanced Materials, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China
| | - Haiquan Tian
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, China
| | - Zhen Zhang
- Division of Advanced Materials, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China
| | - Siqi Zhu
- Division of Advanced Materials, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China
| | - Rong Zhang
- Division of Advanced Materials, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China
| | - Shuai Liu
- Division of Advanced Materials, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China
| | - Kecheng Cao
- School of Physical Science and Technology, Shanghai Tech University, Shanghai 201210, China
| | - Lixing Kang
- School of Nano-Tech and Nano-Bionics, University of Science and Technology of China, Hefei 230026, China
- Division of Advanced Materials, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China
| | - Qingwen Li
- School of Nano-Tech and Nano-Bionics, University of Science and Technology of China, Hefei 230026, China
- Division of Advanced Materials, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China
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Cao K, Jin Y, Shi BH, Shi XY, Wang ZJ, Han JG. [Meta-analysis comparing long-term outcomes of intersphincteric resection versus abdominoperineal resection for low rectal cancer]. Zhonghua Wei Chang Wai Ke Za Zhi 2023; 26:595-602. [PMID: 37583014 DOI: 10.3760/cma.j.cn441530-20230315-00083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 08/17/2023]
Abstract
Objective: To compare the long-term outcomes of intersphincteric (trans-internal and external) sphincter resection (ISR) and abdominoperineal proctocolectomy (APR) for low-grade rectal cancer. Methods: We used a meta-analytic approach to compare these procedures . Published reports comparing ISR and APR for low rectal cancer in Pubmed, Medline, EMBASE and Cochrane, China Knowledge Network (CNKI), China Biomedical Literature Database, and Vipers databases between January 2005 and January 2023 were searched and those meeting the eligibility criteria were selected for extraction of data for analysis. Inclusion criteria were as follows: (1) all reports comparing ISR and APR for low rectal cancer before January 2023; and (2) prospective randomized controlled studies or well-designed cohort studies. Exclusion criteria were as follows: (1) full text not available; (2) duplicate publications, missing primary outcome indicators, and unknown data; and (3) invalid statistical analysis. Results: Sixteen studies with 2498 patients were included in this study. Compared with the APR group, patients in the ISR group were relatively younger (weighted mean difference [WMD]=-1.82, 95%CI=-2.94 to -0.70, P=0.01), had tumors farther from the anal verge (WMD=0.43, 95%CI=0.18 to 0.67, P<0.01), and lower pathological T-stage (T3-4 stage: OR=0.54, 95%CI=0.36 to 0.81, P<0.01). In contrast, there were no statistically significant differences between the two groups in gender (P=0.78), body mass index (P=0.77), or pathological N stage (P=0.09). Compared with the APR group, patients in the ISR group had a lower rate of postoperative complications (OR=0.77, 95%CI=0.60 to 0.99, P=0.04), shorter hospital stay (WMD=-4.30, 95%CI=-7.07 to -1.53, P<0.01), higher 5-year overall survival (HR=0.54, 95%CI=0.33 to 0.88, P=0.01), and higher 5-year disease-free survival (HR=0.65, 95%CI=0.47 to 0.90, P<0.01). Five-year locoregional failure (HR=0.66, 95%CI=0.40 to 1.10, P=0.11) and time to surgery (WMD=-9.71, 95%CI=-41.89 to 22.47, P=0.55) did not differ significantly between the two groups. Conclusion: ISR is a safe and effective alternative to APR for early-stage low-grade rectal cancer.
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Affiliation(s)
- K Cao
- Department of General Surgery, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China
| | - Y Jin
- Department of General Surgery, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China
| | - B H Shi
- Department of General Surgery, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China
| | - X Y Shi
- Department of General Surgery, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China
| | - Z J Wang
- Department of General Surgery, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China
| | - J G Han
- Department of General Surgery, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China
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Wang K, Xia GJ, Liu T, Yun Y, Wang W, Cao K, Yao F, Zhao X, Yu B, Wang YG, Jin C, He J, Li Y, Yang F. Anisotropic Growth of One-Dimensional Carbides in Single-Walled Carbon Nanotubes with Strong Interaction for Catalysis. J Am Chem Soc 2023. [PMID: 37154477 DOI: 10.1021/jacs.3c03128] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Tungsten and molybdenum carbides have shown great potential in catalysis and superconductivity. However, the synthesis of ultrathin W/Mo carbides with a controlled dimension and unique structure is still difficult. Here, inspired by the host-guest assembly strategy with single-walled carbon nanotubes (SWCNTs) as a transparent template, we reported the synthesis of ultrathin (0.8-2.0 nm) W2C and Mo2C nanowires confined in SWCNTs deriving from the encapsulated W/Mo polyoxometalate clusters. The atom-resolved electron microscope combined with spectroscopy and theoretical calculations revealed that the strong interaction between the highly carbophilic W/Mo and SWCNT resulted in the anisotropic growth of carbide nanowires along a specific crystal direction, accompanied by lattice strain and electron donation to the SWCNTs. The SWCNT template endowed carbides with resistance to H2O corrosion. Different from normal modification on the outer surface of SWCNTs, such M2C@SWCNTs (M = W, Mo) provided a delocalized and electron-enriched SWCNT surface to uniformly construct the negatively charged Pd catalyst, which was demonstrated to inhibit the formation of active PdHx hydride and thus achieve highly selective semihydrogenation of a series of alkynes. This work could provide a nondestructive way to design the electron-delocalized SWCNT surface and expand the methodology in synthesizing unusual 1D ultrathin carbophilic-metal nanowires (e.g., TaC, NbC, β-W) with precise control of the anisotropy in SWCNT arrays.
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Affiliation(s)
- Kun Wang
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Guang-Jie Xia
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, 518055, China
- School of Physical Sciences, Great Bay University, Dongguan, 523000, China
| | - Tianhui Liu
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Yulong Yun
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Wu Wang
- Department of Physics, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Kecheng Cao
- School of Physical Science and Technology & Shanghai Key Laboratory of High-resolution Electron Microscopy, ShanghaiTech University, Shanghai, 201210, China
| | - Fenfa Yao
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Xin Zhao
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Boyuan Yu
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Yang-Gang Wang
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Chuanhong Jin
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Jiaqing He
- Department of Physics, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Yan Li
- Beijing National Laboratory for Molecular Science, Key Laboratory for the Physics and Chemistry of Nanodevices, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
- PKU-HKUST ShenZhen-HongKong Institution, Shenzhen, 518055, China
| | - Feng Yang
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, 518055, China
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10
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He N, Liu B, Jiang B, Li X, Jia Z, Zhang J, Long H, Zhang Y, Zou Y, Yang Y, Xiong S, Cao K, Li Y, Ma L. Monomer Symmetry-Regulated Defect Engineering: In Situ Preparation of Functionalized Covalent Organic Frameworks for Highly Efficient Capture and Separation of Carbon Dioxide. ACS Appl Mater Interfaces 2023; 15:16975-16983. [PMID: 36943036 DOI: 10.1021/acsami.2c22435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Developing crystalline porous materials with highly efficient CO2 selective adsorption capacity is one of the key challenges to carbon capture and storage (CCS). In current studies, much more attention has been paid to the crystalline and porous properties of crystalline porous materials for CCS, while the defects, which are unavoidable and ubiquitous, are relatively neglected. Herein, for the first time, we propose a monomer-symmetry regulation strategy for directional defect release to achieve in situ functionalization of COFs while exposing uniformly distributed defect-aldehyde groups as functionalization sites for selective CO2 capture. The regulated defective COFs possess high crystallinity, good structural stability, and a large number of organized and functionalized aldehyde sites, which exhibit one of the highest selective separation values of all COF sorbing materials in CO2/N2 selective adsorption (128.9 cm3/g at 273 K and 1 bar, selectivity: 45.8 from IAST). This work not only provides a new strategy for defect regulation and in situ functionalization of COFs but also provides a valuable approach in the design and preparation of new adsorbents for CO2 adsorption and CO2/N2 selective separation.
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Affiliation(s)
- Ningning He
- College of Chemistry, Key Laboratory of Radiation Physics & Technology, Ministry of Education, Sichuan University, Chengdu 610064, P. R. China
| | - Boyu Liu
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621900, P. R. China
| | - Bo Jiang
- College of Chemistry, Key Laboratory of Radiation Physics & Technology, Ministry of Education, Sichuan University, Chengdu 610064, P. R. China
| | - Xiaofeng Li
- College of Chemistry, Key Laboratory of Radiation Physics & Technology, Ministry of Education, Sichuan University, Chengdu 610064, P. R. China
| | - Zhimin Jia
- College of Chemistry, Key Laboratory of Radiation Physics & Technology, Ministry of Education, Sichuan University, Chengdu 610064, P. R. China
| | - Jie Zhang
- College of Chemistry, Key Laboratory of Radiation Physics & Technology, Ministry of Education, Sichuan University, Chengdu 610064, P. R. China
| | - Honghan Long
- College of Chemistry, Key Laboratory of Radiation Physics & Technology, Ministry of Education, Sichuan University, Chengdu 610064, P. R. China
| | - Yingdan Zhang
- College of Chemistry, Key Laboratory of Radiation Physics & Technology, Ministry of Education, Sichuan University, Chengdu 610064, P. R. China
| | - Yingdi Zou
- College of Chemistry, Key Laboratory of Radiation Physics & Technology, Ministry of Education, Sichuan University, Chengdu 610064, P. R. China
| | - Yuqin Yang
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, P. R. China
| | - Shunshun Xiong
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621900, P. R. China
| | - Kecheng Cao
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, P. R. China
| | - Yang Li
- College of Chemistry, Key Laboratory of Radiation Physics & Technology, Ministry of Education, Sichuan University, Chengdu 610064, P. R. China
| | - Lijian Ma
- College of Chemistry, Key Laboratory of Radiation Physics & Technology, Ministry of Education, Sichuan University, Chengdu 610064, P. R. China
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11
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Zhang H, Li A, Li K, Wang Z, Xu X, Wang Y, Sheridan MV, Hu HS, Xu C, Alekseev EV, Zhang Z, Yan P, Cao K, Chai Z, Albrecht-Schönzart TE, Wang S. Ultrafiltration separation of Am(VI)-polyoxometalate from lanthanides. Nature 2023; 616:482-487. [PMID: 37076728 PMCID: PMC10115636 DOI: 10.1038/s41586-023-05840-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Accepted: 02/14/2023] [Indexed: 04/21/2023]
Abstract
Partitioning of americium from lanthanides (Ln) present in used nuclear fuel plays a key role in the sustainable development of nuclear energy1-3. This task is extremely challenging because thermodynamically stable Am(III) and Ln(III) ions have nearly identical ionic radii and coordination chemistry. Oxidization of Am(III) to Am(VI) produces AmO22+ ions distinct with Ln(III) ions, which has the potential to facilitate separations in principle. However, the rapid reduction of Am(VI) back to Am(III) by radiolysis products and organic reagents required for the traditional separation protocols including solvent and solid extractions hampers practical redox-based separations. Herein, we report a nanoscale polyoxometalate (POM) cluster with a vacancy site compatible with the selective coordination of hexavalent actinides (238U, 237Np, 242Pu and 243Am) over trivalent lanthanides in nitric acid media. To our knowledge, this cluster is the most stable Am(VI) species in aqueous media observed so far. Ultrafiltration-based separation of nanoscale Am(VI)-POM clusters from hydrated lanthanide ions by commercially available, fine-pored membranes enables the development of a once-through americium/lanthanide separation strategy that is highly efficient and rapid, does not involve any organic components and requires minimal energy input.
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Affiliation(s)
- Hailong Zhang
- State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X) and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou, China
| | - Ao Li
- State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X) and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou, China
| | - Kai Li
- State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X) and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou, China
| | - Zhipeng Wang
- Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing, China
| | - Xiaocheng Xu
- Department of Chemistry and Laboratory of Organic Optoelectronics & Molecular Engineering of the Ministry of Education, Tsinghua University, Beijing, China
| | - Yaxing Wang
- State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X) and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou, China.
| | - Matthew V Sheridan
- State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X) and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou, China
| | - Han-Shi Hu
- Department of Chemistry and Laboratory of Organic Optoelectronics & Molecular Engineering of the Ministry of Education, Tsinghua University, Beijing, China
| | - Chao Xu
- Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing, China.
| | | | - Zhenyi Zhang
- Bruker (Beijing) Scientific Technology Co., Ltd, Shanghai, China
| | - Pu Yan
- Shanghai Key Laboratory of High-resolution Electron Microscopy, ShanghaiTech University, Shanghai, China
| | - Kecheng Cao
- Shanghai Key Laboratory of High-resolution Electron Microscopy, ShanghaiTech University, Shanghai, China
| | - Zhifang Chai
- State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X) and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou, China
| | - Thomas E Albrecht-Schönzart
- Department of Chemistry and Nuclear Science & Engineering Center, Colorado School of Mines, Golden, CO, USA.
| | - Shuao Wang
- State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X) and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou, China.
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12
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Cao L, Yan P, Wen S, Bao W, Jiang Y, Zhang Q, Yu N, Zhang Y, Cao K, Dai P, Xie J. Antiexfoliating h-BN⊃In 2O 3 Catalyst for Oxidative Dehydrogenation of Propane in a High-Temperature and Water-Rich Environment. J Am Chem Soc 2023; 145:6184-6193. [PMID: 36893194 DOI: 10.1021/jacs.2c12136] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/10/2023]
Abstract
Hexagonal boron nitride (h-BN) is regarded as one of the most efficient catalysts for oxidative dehydrogenation of propane (ODHP) with high olefin selectivity and productivity. However, the loss of the boron component under a high concentration of water vapor and high temperature seriously hinders its further development. How to make h-BN a stable ODHP catalyst is one of the biggest scientific challenges at present. Herein, we construct h-BN⊃xIn2O3 composite catalysts through the atomic layer deposition (ALD) process. After high-temperature treatment in ODHP reaction conditions, the In2O3 nanoparticles (NPs) are dispersed on the edge of h-BN and observed to be encapsulated by ultrathin boron oxide (BOx) overlayer. A novel strong metal oxide-support interaction (SMOSI) effect between In2O3 NPs and h-BN is observed for the first time. The material characterization reveals that the SMOSI not only improves the interlayer force between h-BN layers with a pinning model but also reduces the affinity of the B-N bond toward O• for inhibiting oxidative cutting of h-BN into fragments at a high temperature and water-rich environment. With the pinning effect of the SMOSI, the catalytic stability of h-BN⊃70In2O3 has been extended nearly five times than that of pristine h-BN, and the intrinsic olefin selectivity/productivity of h-BN is well maintained.
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Affiliation(s)
- Lei Cao
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Pu Yan
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Sheng Wen
- College of New Energy, State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao 266580, China
- College of Engineering and Applied Sciences, Nanjing University, Nanjing 210093, China
| | - Wenda Bao
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Yilan Jiang
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
- Shanghai Key Laboratory of High-resolution Electron Microscopy, ShanghaiTech University, Shanghai 201210, China
| | - Qing Zhang
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
- Shanghai Key Laboratory of High-resolution Electron Microscopy, ShanghaiTech University, Shanghai 201210, China
| | - Na Yu
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Yue Zhang
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Kecheng Cao
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Pengcheng Dai
- College of New Energy, State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao 266580, China
| | - Jin Xie
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
- Shanghai Key Laboratory of High-resolution Electron Microscopy, ShanghaiTech University, Shanghai 201210, China
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13
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Cao K, Wang ZJ, Han JG. [Treatment of obstructive colorectal cancer]. Zhonghua Wei Chang Wai Ke Za Zhi 2023; 26:44-50. [PMID: 36649999 DOI: 10.3760/cma.j.cn441530-20221114-00465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Obstructive colorectal cancer is a common malignant bowel obstruction. Colostomy or colostomy following tumor resection may be the first choice for emergency surgery. The intestinal and systemic conditions of patients undergoing emergency surgery are often poor, and patients need to undergo multiple operations, which increase the surgical risk and economic burden and reduce the quality of life of patients. Poor intraoperative visualization may also affect the radical operation of emergency surgery. Transanal decompression tube (TDT) can rapidly decompress and drain the obstructed bowel, effectively relieve obstruction symptoms, and improve the success rate of primary radical resection. The TDT squeeze the tumor lightly, causing no spread of tumor cells, and is cheap, but the cavity of transanal decompression tube is small and easily blocked, and requires tedious flushing or regular replacement. Self-expanding metallic stents (SEMS) can relieve intestinal obstruction effectively, provide sufficient preparation time for preoperative examination and improvement of nutritional status. By improving patient's tolerance to radical surgery, SEMS might be used as an important treatment strategy choice for obstructive colorectal cancer. However, SEMS may squeeze the tumor, leading to the spread of tumor cells, increase the recurrence rate and metastasis rate, and reduce the survival rate. Moreover, intestinal wall edema still existed during the operation following SEMS, and the rate of ostomy after anastomosis was as high as 34%. We hypothesized that prolonging the interval between stent insertion and surgery to 2 months, with neoadjuvant chemotherapy administered during this interval (SEMS-neoadjuvant chemotherapy strategy), would help improve outcomes. The SEMS-neoadjuvant chemotherapy strategy is a safe, effective, and well tolerated treatment approach with a high laparoscopic resection rate, low stoma formation rate and improvement in the overall survival for patients with left-sided colon cancer obstruction. The patient physical status is improved, the primary tumor is downstaged, and intestinal wall edema is relieved during the relatively longer interval between SEMS placement and surgery. The SEMS-neoadjuvant chemotherapy strategy may be a preferred therapeutic strategy for obstructive left colon cancer.
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Affiliation(s)
- K Cao
- Department of General Surgery, Beijing Chaoyang Hosptial, Capital Medical University, Beijing 100020, China
| | - Z J Wang
- Department of General Surgery, Beijing Chaoyang Hosptial, Capital Medical University, Beijing 100020, China
| | - J G Han
- Department of General Surgery, Beijing Chaoyang Hosptial, Capital Medical University, Beijing 100020, China
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14
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Cao K, Diao XL, Yu JF, Li GB, Zhai ZW, Zhao BC, Wang ZJ, Han JG. [Effect of intestinal obstruction stent combined with neoadjuvant chemotherapy on the pathological characteristics of surgical specimens in patients with complete obstructive colorectal cancer]. Zhonghua Wei Chang Wai Ke Za Zhi 2022; 25:1012-1019. [PMID: 36396377 DOI: 10.3760/cma.j.cn441530-20220406-00135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Objective: To compare the effects of three treatment options: emergency surgery, stent-surgery, and stent-neoadjuvant chemotherapy-surgery, on the pathological characteris- tics of surgically-resected specimens from patients with completely obstructive colorectal cancer. Methods: This was a retrospective cohort study analyzing clinicopathological data of patients with complete obstructive colorectal cancer who were admitted to the General Surgery Department of Beijing Chaoyang Hospital, Capital Medical University, between May 2012 and August 2020. The inclusion criteria were diagnosed with complete colorectal obstruction, pathologically confirmed as adenocarcinoma, resectable on imaging assessment, and without distant metastasis, combined with the patients' clinical manifestations and imaging examination findings. Patients with multiple colorectal cancers, refusal to undergo surgery, and concurrent peritonitis or intestinal perforation before stenting of the intestinal obstruction were excluded. Eighty-nine patients with completely obstructive colorectal cancer were enrolled in the study and were divided into emergency surgery group (n=30), stent-surgery group (n=34), and stent-neoadjuvant chemotherapy- surgery group (n=25) according to the treatment strategy. Differences in the pathological features (namely perineural infiltration, lymphovascular infiltration, tumor deposits, specimen intravascular necrosis, inflammatory infiltration, abscesses, mucus lake formation, foreign body giant cells, calcification, and tumor cell ratio) and biomolecular markers (namely cluster of differentiation (CD)34, Ki67, Bcl-2, matrix metalloproteinase-9, and hypoxia-inducible factor alpha) were recorded. Pathological evaluation was based on the presence or absence of qualitative evaluation of pathological features, such as peripheral nerve infiltration, vascular infiltration, and cancer nodules within the specimens. The evaluation criteria for the pathological features of the specimens were as follows: Semi-quantitative graded evaluation based on the proportion of tissue necrosis, inflammatory infiltrates, abscesses, mucus lake formation, foreign body giant cells, calcification, and tumor cells in the field of view within the specimen were classified as: grade 0: not seen within the specimen; grade 1: 0-25%; grade 2: 25%-50%; grade 3: 50%-75%; and grade 4: 75%-100%. The intensity of cellular immunity was classified as none (0 points), weak (1 point), moderate (2 points), and strong (3 points). The two evaluation scores were then multiplied to obtain a total score of 0-12. The immunohistochemical results were also evaluated comprehensively, and the results were defined as: negative (grade 0): 0 points; weakly positive (grade 1): 1-3 points; moderately positive (grade 2): 4-6 points; strongly positive (grade 3): 7-9 points; and very strong positive (grade 4): 10-12 points. Normally-distributed values were expressed as mean±standard deviation, and one-way analysis of variance was used to analyze the differences between the groups. Non-normally-distributed values were expressed as median (interquartile range: Q1, Q3). A nonparametric test (Kruskal-Wallis H test) was used for comparisons between groups. Results: The differences were not statistically significant when comparing the baseline data for age, gender, tumor site, American Society of Anesthesiologists score, tumor T-stage, N-stage, and degree of differentiation among the three groups (all P>0.05). The differences were not statistically significant when comparing the pathological characteristics of the resected tumor specimens, such as foreign body giant cells, inflammatory infiltration, and mucus lake formation among the three groups (all P>0.05). The rates of vascular infiltration were 56.6% (17/30), 41.2% (15/34), and 20.0% (5/25) in the emergency surgery, stent-surgery, and stent- neoadjuvant chemotherapy-surgery groups, respectively, with statistically significant differences between the groups (χ2=7.142, P=0.028). Additionally, the rate of vascular infiltration was significantly lower in the stent-neoadjuvant chemotherapy-surgery group than that in the emergency surgery group (P=0.038). Peripheral nerve infiltration rates were 55.3% (16/30), 41.2% (14/34), and 16.0% (4/25), in the emergency surgery, stent-surgery, and stent-neoadjuvant chemotherapy-surgery groups, respectively, with statistically significant differences (χ2=7.735, P=0.021). The infiltration peripheral nerve rates in the stent-neoadjuvant chemotherapy-surgery group were significantly lower than those in the emergency surgery group (P=0.032). The necrosis grade was 2 (1, 2), 2 (1, 3), and 2 (2, 3) in the emergency surgery, stent- surgery, and stent-neoadjuvant chemotherapy-surgery groups, respectively, with statistically significant differences (H=10.090, P=0.006). Post hoc comparison revealed that the necrosis grade was higher in the stent-surgery and stent-neoadjuvant chemotherapy-surgery groups compared with the emergency surgery group (both P<0.05). The abscess grade was 2 (1, 2), 3 (1, 3), and 2 (2, 3) in the emergency surgery, stent-surgery, and stent-neoadjuvant chemotherapy-surgery groups, respectively, with statistically significant differences (H=6.584, P=0.037). Post hoc comparison revealed that the abscess grade in the emergency surgery group was significantly lower than that in the stent-surgery group (P=0.037). The fibrosis grade was 2 (1, 3), 3 (2, 3), and 3 (2, 3), in the emergency surgery, stent-surgery, and stent-neoadjuvant chemotherapy-surgery groups, respectively, with statistically significant differences (H=11.078, P=0.004). Post hoc analysis revealed that the fibrosis degree was higher in both the stent-surgery group and the stent- neoadjuvant chemotherapy-surgery group compared with the emergency surgery group (both, P<0.05). The tumor cell ratio grades were 4 (3, 4), 4 (3, 4), and 3 (2, 4), in the emergency surgery, stent-surgery, and stent-neoadjuvant chemotherapy-surgery groups, respectively, with statistically significant differences (H=8.594, P=0.014). Post hoc analysis showed that the tumor cell ratio in the stent-neoadjuvant chemotherapy-surgery group was significantly lower than that in the emergency surgery group (P=0.012). The CD34 grades were 2 (2, 3), 3 (2, 4), and 3 (2, 3) in the emergency surgery, stent-surgery, and stent-neoadjuvant chemotherapy-surgery groups, respectively, and the difference was statistically significant (H=9.786, P=0.007). Post hoc analysis showed that the CD34 grades in the emergency surgery, stent-surgery, and stent-neoadjuvant chemotherapy-surgery groups were 2 (2, 3), 3 (2, 4), and 3 (2,3), respectively. Post hoc analysis revealed that the CD34 concentration was higher in the stent-surgery group than that in the emergency surgery group (P=0.005). Conclusion: Stenting may increase the risk of distant metastases in obstructive colorectal cancer. The stent-neoadjuvant chemotherapy-surgery treatment model promotes tumor cell necrosis and fibrosis and reduces the proportion of tumor cells, vascular infiltration, and peripheral nerve infiltration, which may help decrease local tumor infiltration and distant metastasis in completely obstructive colorectal cancer after stent placement.
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Affiliation(s)
- K Cao
- Department of General Surgery, Beijing Chaoyang Hosptial, Capital Medical University, Beijing 100020, China
| | - X L Diao
- Department of Pathology, Beijing Chaoyang Hosptial, Capital Medical University, Beijing 100020, China
| | - J F Yu
- Department of Gastroenterology, Beijing Chaoyang Hosptial, Capital Medical University, Beijing 100020, China
| | - G B Li
- Department of General Surgery, Beijing Chaoyang Hosptial, Capital Medical University, Beijing 100020, China
| | - Z W Zhai
- Department of General Surgery, Beijing Chaoyang Hosptial, Capital Medical University, Beijing 100020, China
| | - B C Zhao
- Department of General Surgery, Beijing Chaoyang Hosptial, Capital Medical University, Beijing 100020, China
| | - Z J Wang
- Department of General Surgery, Beijing Chaoyang Hosptial, Capital Medical University, Beijing 100020, China
| | - J G Han
- Department of General Surgery, Beijing Chaoyang Hosptial, Capital Medical University, Beijing 100020, China
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Qiao CY, Zhang H, Zhang Y, Zhang S, Li DJ, Song XD, Yang YQ, Wang XF, Yao N, Chen C, Wang LX, Liu T, Guo Q, Lin T, Cao K, Liang J, Wang NL. [Comparison study for the proportion of underdiagnosed zonulopathy in angle closure glaucoma]. Zhonghua Yan Ke Za Zhi 2022; 58:872-881. [PMID: 35359094 DOI: 10.3760/cma.j.cn112142-20211226-00608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Objective: To analyze the proportion and clinical characteristics of underdiagnosed zonulopathy in angle closure glaucoma (ACG) patients and to explore the related risk factors. Methods: Case-control study. Continuous cases of ACG patients who underwent phacoemulsification combined with intraocular lens implantation and goniosynechialysis surgery [ACG group, including acute angle closure glaucoma (AACG) and chronic angle closure glaucoma (CACG)] from November 1, 2020 to October 31, 2021 and age-related cataract patients who underwent phacoemulsification combined with intraocular lens implantation surgery in the same period (control group) were included. The diagnosis of zonulopathy was determined according to the intraoperative signs such as wrinkles of the anterior capsule during continuous circular capsulorhexis. The proportion of zonulopathy, preoperative diagnosis rate of zonulopathy, demographic characteristics, anterior chamber depth (ACD), axis length, difference of ACD in both eyes (ACD of the contralateral eye minus ACD of the operated eye) were compared between the two groups. The related risk factors were explored. The paired t-test (comparison between two groups of normally distributed data), non-parametric test (comparison between two groups of non-normally distributed data), Chi-square test (categorical variables), univariate and multivariate logistic regression analysis were used. Results: There were 104 ACG patients (104 eyes), including 63 AACG patients (63 eyes) and 41 CACG patients (41 eyes), and 117 controls (117 eyes). There was no significant difference in age (P=0.29) and gender (P=0.07) between the two groups. The ACG group had shallower anterior chamber (P<0.001), shorter axial length (P<0.001) and more ACD difference in both eyes (P<0.001). In the ACG group, the proportion of zonulopathy was 46.2% (48/104), which was significantly higher than that (6.0%, 7/117) in the control group (P<0.001). In the control group, only zonular laxity was found, while in the ACG group, besides the predominant zonular laxity (68.8%, 33/48), there was zonular dehiscence (31.3%, 15/48). The eyes with AACG (57.1%, 36/63) had a higher proportion of zonulopathy than those with CACG (29.3%, 12/41) (P=0.006). In the ACG group, only 14 cases (29.8%) were diagnosed preoperatively according to slit lamp examination and/or ultrasound biomicroscopy. The proportion of underdiagnosed zonulopathy was 70.8% in the ACG group (34/48). A smaller ACD was found to be related to the zonulopathy in the ACG group. All AACG cases with an ACD ≤2.0 mm and CACG cases with an ACD ≤1.9 mm had zonulopathy. Multivariate logistic regression showed that the ACD difference in both eyes (P=0.025) and the diagnosis of ACG (AACG vs. cataract, P<0.001; CACG vs. cataract, P=0.023) were independent risk factors associated with zonulopathy. Conclusions: The proportion of underdiagnosed zonulopathy among ACG patients is high. Better preoperative diagnostic methods for zonulopathy are needed. Zonulopathy is common in ACG patients, especially in AACG patients, suggesting that zonulopathy may be related to the pathogenesis of ACG. The shallower the ACD, the riskier the zonulopathy. ACD differences between two eyes and ACG types (including AACG and CACG) were related risk factors of zonulopathy.(This article was published ahead of print on the Online-First Publishing Platform for Excellent Scientific Researches of Chinese Medical Association Publishing House on March 11, 2022).
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Affiliation(s)
- C Y Qiao
- Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology & Visual Science Key Lab, Beijing Ophthalmic Institute, Beijing 100730, China
| | - H Zhang
- Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology & Visual Science Key Lab, Beijing Ophthalmic Institute, Beijing 100730, China
| | - Y Zhang
- Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology & Visual Science Key Lab, Beijing Ophthalmic Institute, Beijing 100730, China
| | - S Zhang
- Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology & Visual Science Key Lab, Beijing Ophthalmic Institute, Beijing 100730, China
| | - D J Li
- Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology & Visual Science Key Lab, Beijing Ophthalmic Institute, Beijing 100730, China
| | - X D Song
- Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology & Visual Science Key Lab, Beijing Ophthalmic Institute, Beijing 100730, China
| | - Y Q Yang
- Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology & Visual Science Key Lab, Beijing Ophthalmic Institute, Beijing 100730, China
| | - X F Wang
- Key Laboratory of Biomechanics and Mechanobiology, Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing 100083, China
| | - N Yao
- Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology & Visual Science Key Lab, Beijing Ophthalmic Institute, Beijing 100730, China
| | - C Chen
- Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology & Visual Science Key Lab, Beijing Ophthalmic Institute, Beijing 100730, China
| | - L X Wang
- Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology & Visual Science Key Lab, Beijing Ophthalmic Institute, Beijing 100730, China
| | - T Liu
- Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology & Visual Science Key Lab, Beijing Ophthalmic Institute, Beijing 100730, China
| | - Q Guo
- Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology & Visual Science Key Lab, Beijing Ophthalmic Institute, Beijing 100730, China
| | - T Lin
- Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology & Visual Science Key Lab, Beijing Ophthalmic Institute, Beijing 100730, China
| | - K Cao
- Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology & Visual Science Key Lab, Beijing Ophthalmic Institute, Beijing 100730, China
| | - J Liang
- Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology & Visual Science Key Lab, Beijing Ophthalmic Institute, Beijing 100730, China
| | - N L Wang
- Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology & Visual Science Key Lab, Beijing Ophthalmic Institute, Beijing 100730, China
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Vilotte F, Pasquier D, Blanchard P, Supiot S, Khalifa J, Schick U, Lacornerie T, Vieillevigne L, Marre D, Chapet O, Latorzeff I, Magne N, Meyer E, Cao K, Belkacemi Y, Bibault J, Berge-Lefranc M, Faivre J, Gnep K, Guimas V, Hasbini A, Langrand-Escure J, Hennequin C, Graff P. Recommendations for stereotactic body radiation therapy for spine and non-spine bone metastases. A GETUG (French society of urological radiation oncolgists) consensus using a national two-round modified Delphi survey. Clin Transl Radiat Oncol 2022; 37:33-40. [PMID: 36052019 PMCID: PMC9424259 DOI: 10.1016/j.ctro.2022.08.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Accepted: 08/06/2022] [Indexed: 11/15/2022] Open
Abstract
Background and purpose The relevance of metastasis-directed stereotactic body radiation therapy (SBRT) remains to be demonstrated through phase III trials. Multiple SBRT procedures have been published potentially resulting in a disparity of practices. Therefore, the french society of urological radiation oncolgists (GETUG) recognized the need for joint expert consensus guidelines for metastasis-directed SBRT in order to standardize practice in trials carried out by the group. Materials and methods After a comprehensive literature review, 97 recommendation statements were created regarding planning and delivery of spine bone (SBM) and non-spine bone metastases (NSBM) SBRT. These statements were then submitted to a national online two-round modified Delphi survey among main GETUG investigators. Consensus was achieved if a statement received ≥ 75 % agreements, a trend to consensus being defined as 65-74 % agreements. Any statement without consensus at round one was re-submitted in round two. Results Twenty-one out of 29 (72.4%) surveyed experts responded to both rounds. Seventy-five statements achieved consensus at round one leaving 22 statements needing a revote of which 16 achieved consensus and 5 a trend to consensus. The final rate of consensus was 91/97 (93.8%). Statements with no consensus concerned patient selection (3/19), dose and fractionation (1/11), prescription and dose objectives (1/9) and organs at risk delineation (1/15). The voting resulted in the writing of step-by-step consensus guidelines. Conclusion Consensus guidelines for SBM and NSBM SBRT were agreed upon using a validated modified Delphi approach. These guidelines will be used as per-protocole recommendations in ongoing and further GETUG clinical trials.
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Affiliation(s)
- F. Vilotte
- Department of Radiation Oncology, Institut Bergonié, 229 Cours de l'Argonne, 33076 Bordeaux, France
| | - D. Pasquier
- Department of Radiation Oncology, Centre Oscar Lambret, 3 Rue Frédéric Combemale, 59000 Lille, France
| | - P. Blanchard
- Department of Radiation Oncology, Institut Gustave Roussy, 114 Rue Edouard Vaillant, 94805 Villejuif, France
| | - S. Supiot
- Department of Radiation Oncology, Institut de Cancérologie de L'Ouest, Boulevard Professeur Jacques Monod, 44800 Saint Herblain, France
| | - J. Khalifa
- Department of Radiation Oncology, Institut Universitaire du Cancer de Toulouse-Oncopole, 1 AV Irène Joliot Curie, 31059 Toulouse, France
| | - U. Schick
- Department of Radiation Oncology, CHU de Brest, Hôpital Morvan, avenue Foch, 29200 Brest, France
| | - T. Lacornerie
- Division of Radiation Medical Physics, Centre Oscar Lambret, 3 Rue Frédéric Combemale, 59000 Lille, France
| | - L. Vieillevigne
- Division of Radiation Medical Physics, Institut Universitaire du Cancer de Toulouse-Oncopole, 1 AV Irène Joliot Curie, 31059 Toulouse, France
| | - D. Marre
- Division of Radiation Medical Physics, Groupe ONCORAD Garonne, Clinique Pasteur, Bât Atrium, 1 rue de la petite vitesse, 31300 Toulouse, France
| | - O. Chapet
- Department of Radiation Oncology, CH Lyon Sud 165 Chemin Du Grand Revoyet, 69310 Pierre-bénite, France
| | - I. Latorzeff
- Department of Radiation Oncology, Groupe ONCORAD Garonne, Clinique Pasteur, Bât Atrium, 1 rue de la petite vitesse, 31300 Toulouse, France
| | - N. Magne
- Department of Radiation Oncology, Institut de cancérologie Lucien Neuwirth, 108 bis AV Albert Raimond, 42270 Saint Priest en Jarez, France
| | - E. Meyer
- Department of Radiation Oncology, Centre François Baclesse, 3 Av. du Général Harris, 14000 Caen, France
| | - K. Cao
- Department of Radiation Oncology, Institut Curie Paris, 26 rue d’Ulm, 75005 Paris, France
| | - Y. Belkacemi
- Department of Radiation Oncology, Hôpital Henri-Mondor, 1 rue Gustave Eiffel, 94000 Créteil, France
| | - J.E. Bibault
- Department of Radiation Oncology, Hôpital Européen Georges Pompidou, 20 rue Leblanc, 75015 Paris, France
| | - M. Berge-Lefranc
- Department of Radiation Oncology, Centre Saint Michel, rue du Docteur Schweitzer, 17000 La Rochelle, France
| | - J.C. Faivre
- Department of Radiation Oncology, Institut de Cancérologie de Lorraine, 6 Av. de Bourgogne, 54519 Vandœuvre-lès-Nancy, France
| | - K. Gnep
- Department of Radiation Oncology, Centre Eugène Marquis, AV de la Bataille Flandres Dunkerque, 35000 Rennes, France
| | - V. Guimas
- Department of Radiation Oncology, Institut de Cancérologie de L'Ouest, Boulevard Professeur Jacques Monod, 44800 Saint Herblain, France
| | - A. Hasbini
- Department of Radiation Oncology, Clinique Pasteur, 32 r Auguste Kervern, 29200 Brest, France
| | - J. Langrand-Escure
- Department of Radiation Oncology, Institut de cancérologie Lucien Neuwirth, 108 bis AV Albert Raimond, 42270 Saint Priest en Jarez, France
| | - C. Hennequin
- Department of Radiation Oncology, Hôpital Saint Louis, 1 Avenue Claude Vellefaux, 75010 Paris, France
| | - P. Graff
- Department of Radiation Oncology, Institut Curie Saint Cloud, 35 rue Dailly, 92210 Saint Cloud, France
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Li GB, Zhai ZW, Zhang HY, Cao K, Wang ZJ, Han JG. [Short-term efficacy of laparoscopic sleeve gastrectomy plus uncut jejunojejunostomy (SG-uncut JJB) for treatment of obesity: a prospective study]. Zhonghua Wei Chang Wai Ke Za Zhi 2022; 25:906-912. [PMID: 36245116 DOI: 10.3760/cma.j.cn441530-20211231-00539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Objective: To analyze the short-term efficacy of sleeve gastrectomy plus uncut jejunojejunostomy (SG+uncut JJB) for patients with obesity. Methods: This prospective study was conducted in the General Surgery Department of Beijing Chaoyang Hospital from January to December 2020 (NCT04534504). The inclusion criteria were patients with a body mass index (BMI) of >32.5 kg/m2, type 2 diabetes mellitus (T2DM) or at least two comorbidities with a BMI of 27.5-32.5 kg/m2, a waist circumference of >90 cm (male) or >85 cm (female), and those aged between 16 and 65 years. The exclusion criteria included patients who were pregnant, diagnosed with severe neurological or mental illnesses, long-term users of antidepressants and immunosuppressants, and diagnosed with severe gastroesophageal reflux disease or underwent revision surgery. Patients with incomplete follow-up data or insufficient follow-up time were also excluded. Patients were divided into SG-uncut JJB group and SG group according to doctor's recommendation and patients' wills. The primary endpoint was the percentage of excess weight loss (%EWL), and the secondary endpoints were the percentage of total weight loss (%TWL) and the T2DM remission rate. All patients were regularly followed up until the end of December 2020. Results: After excluding seven patients who did not meet the inclusion criteria, 47 eligible patients were finally identified, with 21 in the SG+uncut JJB group and 26 in the SG group. The operation time (140 [110-180] minutes vs. 90 [70-180] minutes, Z=-3.642, P=0.001) and total cost ([54,000 ± 6000] yuan vs. [49,000 ± 7000] yuan, t=2.590, P=0.013) were slightly higher in the SG+uncut JJB group than in the SG group (all P<0.05). However, no significant differences were observed in terms of postoperative hospital stay, operative blood loss, and postoperative complications between the two groups (all P>0.05). The incidence of nausea and vomiting was significantly lower in the SG+uncut JJB group than in the SG group (9.5% [2/21] vs. 46.2% [12/26], χ2=7.453, P=0.006}. The %EWL and %TWL in the SG+uncut JJB group tended to increase gradually with time. The same trend was also observed in the SG group during the first 6 months of follow-up. The 12-month %EWL and %TWL in the SG group were slightly lower compared with the 6-month %EWL and %TWL (P=0.001). The 12-month %EWL values in the SG+uncut JJB and SG groups were (72.4%±12.3%) and (63.6%±25.7%), respectively. However, no significant differences were observed between the two groups in terms of %EWL. Moreover, the 1-month ([11.1%±2.4%] vs. [8.2%±4.4%], P=0.011) and 12-month %TWL ([29.7%±6.9%] vs. [20.3%±7.2%], P=0.001) were significantly higher in the SG+uncut JJB group than in the SG group. No significant differences were observed in terms of T2DM and hypertension remission (all P>0.05). Conclusion: SG+uncut JJB might achieve a promising weight-loss effect similar to SG with a relatively lower incidence of postoperative nausea and vomiting, and it might be an effective and safe approach for obesity management.
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Affiliation(s)
- G B Li
- Department of General Surgery, Beijing Chaoyang Hosptial, Capital Medical University, Beijing 100020, China
| | - Z W Zhai
- Department of General Surgery, Beijing Chaoyang Hosptial, Capital Medical University, Beijing 100020, China
| | - H Y Zhang
- Department of General Surgery, Beijing Chaoyang Hosptial, Capital Medical University, Beijing 100020, China
| | - K Cao
- Department of General Surgery, Beijing Chaoyang Hosptial, Capital Medical University, Beijing 100020, China
| | - Z J Wang
- Department of General Surgery, Beijing Chaoyang Hosptial, Capital Medical University, Beijing 100020, China
| | - J G Han
- Department of General Surgery, Beijing Chaoyang Hosptial, Capital Medical University, Beijing 100020, China
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Aslam F, Al-Sadawi MA, Aleem S, Ijaz H, Jacob R, Cao K, Santore L, Almasry I, Singh A, Fan R, Rashba E. Outcomes of additional substrate modification in de novo atrial fibrillation ablation. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Pulmonary vein isolation (PVI) is the cornerstone of atrial fibrillation (AF) ablation. Data regarding additional substrate modification has been conflicting, both in paroxysmal and persistent atrial fibrillation.
Purpose
To assess the effect of additional linear substrate modification during de novo AF ablation on AF recurrence.
Methods
We reviewed 1575 AF ablations in 1254 patients from January 2013 to June 2021 at a single academic medical center. There were 1096 de novo ablations. We defined substrate modification as linear ablations including cavotricuspid isthmus (CTI), superior vena cava isolation, intercaval line, mitral isthmus, and left atrial roof and floor lines. We evaluated clinical and procedural characteristics to identify risk factors for AF recurrence and complications. Patients were followed for a minimum of 6 months.
Results
The 1096 de novo ablations included 65.5% males with mean age 61.1 years, mean BMI 31.3, 81.8% paroxysmal AF and 18.2% persistent AF. There were four AF ablation subgroups: PVI alone (41.6%), PVI and CTI ablation (37.1%), PVI with CTI and additional substrate modification (15.6%), and PVI with substrate modification without CTI ablation (5.7%). Overall, AF recurred in 36.9% cases. AF recurrence with PVI only ablation was 41% compared to 32.7% in patients with PVI and CTI ablation (p=0.02). When looking at patients with paroxysmal and persistent AF, results were similar, with decreased AF recurrence with the addition of CTI ablation in both paroxysmal (37.3% v. 29.2%, p=0.03) and persistent AF (58.1% v. 40.0%, p=0.02). Additional substrate modification did not result in significant difference in outcome in either paroxysmal or persistent AF (Figure 1).
Conclusions
In de novo AF ablations, addition of CTI ablation to de novo PVI ablation is associated with lower AF recurrence in both paroxysmal and persistent AF. Additional linear substrate modification did not impact outcomes.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- F Aslam
- Stony Brook University Hospital , Stony Brook , United States of America
| | - M A Al-Sadawi
- Stony Brook University Hospital , Stony Brook , United States of America
| | - S Aleem
- Stony Brook University Hospital , Stony Brook , United States of America
| | - H Ijaz
- Stony Brook University Hospital , Stony Brook , United States of America
| | - R Jacob
- Stony Brook University Hospital , Stony Brook , United States of America
| | - K Cao
- Stony Brook University Hospital , Stony Brook , United States of America
| | - L Santore
- Stony Brook University Hospital , Stony Brook , United States of America
| | - I Almasry
- Stony Brook University Hospital , Stony Brook , United States of America
| | - A Singh
- Stony Brook University Hospital , Stony Brook , United States of America
| | - R Fan
- Stony Brook University Hospital , Stony Brook , United States of America
| | - E Rashba
- Stony Brook University Hospital , Stony Brook , United States of America
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19
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Ijaz H, Al-Sadawi M, Aslam F, Aleem S, Jacob R, Cao K, Santore L, Almasry I, Singh A, Fan R, Rashba E. Safety of same day discharge after atrial fibrillation ablation. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Atrial fibrillation (AF) ablation is an outpatient procedure with traditionally an overnight hospital observation (OHO). Recently, there has been a trend towards same day discharge (SDD).
Purpose
Compare AF ablation procedure safety outcomes with SDD vs. OHO.
Methods
We reviewed consecutive AF procedures performed from January 2013 to June 2021 at a single academic center. Patients underwent OHO until June 2020, after which patients had SDD whenever feasible. Adverse events were assessed at three months, which included pericardial effusion, pericarditis, post-procedure hypotension, embolic events, and vascular complications. We also assessed emergency department (ED) visits and procedure-related hospital admissions.
Results
There were 1254 patients who underwent 1575 AF ablations. 1440 patients underwent OHO and 135 had SDD. Mean age was 62.2 years, BMI 33 kg/m2, 65% were male, and 27.6% had persistent AF, without significant differences in baseline characteristics between OHO and SDD. We found that SDD was not associated with increased complications (OHO 0.20% v. SDD 0.49%; p>0.05), ED visits, or hospital admissions (2% v. 5%; p>0.05) (Figure 1, 2). There were no gender or age-related disparities in all outcomes (p>0.05).
Conclusion
SDD protocol after AF ablation is feasible and not associated with higher incidence of complications, ED visits, and procedure-related hospitalizations.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- H Ijaz
- Stony Brook University Hospital , Stony Brook , United States of America
| | - M Al-Sadawi
- Stony Brook University Hospital , Stony Brook , United States of America
| | - F Aslam
- Stony Brook University Hospital , Stony Brook , United States of America
| | - S Aleem
- Stony Brook University Hospital , Stony Brook , United States of America
| | - R Jacob
- Stony Brook University Hospital , Stony Brook , United States of America
| | - K Cao
- Stony Brook University Hospital , Stony Brook , United States of America
| | - L Santore
- Stony Brook University Hospital , Stony Brook , United States of America
| | - I Almasry
- Stony Brook University Hospital , Stony Brook , United States of America
| | - A Singh
- Stony Brook University Hospital , Stony Brook , United States of America
| | - R Fan
- Stony Brook University Hospital , Stony Brook , United States of America
| | - E Rashba
- Stony Brook University Hospital , Stony Brook , United States of America
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Aleem S, Al-Sadawi M, Aslam F, Ijaz H, Cao K, Jacob R, Santore L, Almasry I, Fan R, Rashba E, Singh A. Does body mass index affect atrial fibrillation ablation outcomes. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
There are conflicting reports in the literature regarding whether body-mass index (BMI) influences the success and procedural complication rates of atrial fibrillation (AF) ablation.
Purpose
To determine if differences in BMI affect AF ablation outcomes
Methods
At a single academic center, AF ablation procedures were reviewed from 2013 to 2021. Primary outcomes were AF recurrence (after a 90 day blanking period), procedure-related complications, emergency department visits or hospital admission (ED/HOSP). Patients had a minimum of 6 months follow-up
Results
We analyzed 1569 AF ablation consecutive procedures (1093 de novo, 476 repeat ablation) using either radiofrequency or cryoablation. The study population was 65% male with a mean age 62 years, with 28% persistent AF. BMI was separated into three cohorts: <25 kg/m2 (N=218), 25–30 kg/m2 (N=547), and >30 kg/m2 (N=804). There were no significant differences in the type of AF, left atrial diameter, or left ventricular ejection fraction in the BMI subgroups. There was a direct relationship between the prevalence of co-morbid conditions and increasing BMI: hypertension (49.1%, 59.9%, 60.2%; p 0.04), diabetes (6.4%, 13.5%, 21.3%; p 0.01), and obstructive sleep apnea (5.5%, 10.8%, 26.7%; p<0.01). There were no significant differences in AF recurrence, procedural complications or ED/HOSP among the BMI cohorts (p>0.05) (Figure 1). No gender related disparities were noted in outcomes (p>0.05).
Conclusion
Higher BMI was not associated with AF recurrence, complications, or ED/HOSP after AF ablation despite a higher prevalence of comorbid medical conditions
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- S Aleem
- Stony Brook University Hospital , Stony Brook , United States of America
| | - M Al-Sadawi
- Stony Brook University Hospital , Stony Brook , United States of America
| | - F Aslam
- Stony Brook University Hospital , Stony Brook , United States of America
| | - H Ijaz
- Stony Brook University Hospital , Stony Brook , United States of America
| | - K Cao
- Stony Brook University Hospital , Stony Brook , United States of America
| | - R Jacob
- Stony Brook University Hospital , Stony Brook , United States of America
| | - L Santore
- Stony Brook University Hospital , Stony Brook , United States of America
| | - I Almasry
- Stony Brook University Hospital , Stony Brook , United States of America
| | - R Fan
- Stony Brook University Hospital , Stony Brook , United States of America
| | - E Rashba
- Stony Brook University Hospital , Stony Brook , United States of America
| | - A Singh
- Stony Brook University Hospital , Stony Brook , United States of America
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Chen J, Zhang M, Zhang S, Cao K, Mao X, Zhang M, He L, Dong X, Shu J, Dong H, Zhai F, Shen R, Yuan M, Zhao X, Wu G, Chai Z, Wang S. Metal‐Organic Framework@Metal Oxide Heterostructures Induced by Electron‐Beam Radiation. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202212532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Junchang Chen
- Soochow University School for Radiological&Interdisciplinary sciences CHINA
| | - Mingxing Zhang
- Soochow University School for Radiological&Interdisciplinary sciences CHINA
| | - Shitong Zhang
- Tiangong University State Key Laboratory of Separation Membranes and Membrane Processes CHINA
| | - Kecheng Cao
- ShanghaiTech University School of Physical Science and Technology CHINA
| | - Xuanzhi Mao
- Chinese Academy of Sciences Shanghai Institute of Applied Physics CHINA
| | - Maojiang Zhang
- Chizhou University School of Materials and Environmental Engineering CHINA
| | - Linwei He
- Soochow University School for Radiological&Interdisciplinary sciences CHINA
| | - Xiao Dong
- Soochow University School for Radiological&Interdisciplinary sciences CHINA
| | - Jie Shu
- Soochow University Analysis and Testing Center CHINA
| | - Hongchun Dong
- Soochow University Analysis and Testing Center CHINA
| | - Fuwan Zhai
- Soochow University School for Radiological&Interdisciplinary sciences CHINA
| | - Rongfang Shen
- Chinese Academy of Sciences Shanghai Institute of Applied Physics CHINA
| | - Mengjia Yuan
- Soochow University School for Radiological&Interdisciplinary sciences CHINA
| | - Xiaofang Zhao
- Soochow University School for Radiological&Interdisciplinary sciences CHINA
| | - Guozhong Wu
- Chinese Academy of Sciences Shanghai Institute of Applied Physics CHINA
| | - Zhifang Chai
- Soochow University School for Radiological&Interdisciplinary sciences CHINA
| | - Shuao Wang
- Soochow University School for Radiological and interdisciplinary Sciences 199 Renai Road 215123 Suzhou CHINA
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Chen J, Zhang M, Zhang S, Cao K, Mao X, Zhang M, He L, Dong X, Shu J, Dong H, Zhai F, Shen R, Yuan M, Zhao X, Wu G, Chai Z, Wang S. Metal‐Organic Framework@Metal Oxide Heterostructures Induced by Electron‐Beam Radiation. Angew Chem Int Ed Engl 2022; 61:e202212532. [DOI: 10.1002/anie.202212532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Indexed: 11/10/2022]
Affiliation(s)
- Junchang Chen
- Soochow University School for Radiological&Interdisciplinary sciences CHINA
| | - Mingxing Zhang
- Soochow University School for Radiological&Interdisciplinary sciences CHINA
| | - Shitong Zhang
- Tiangong University State Key Laboratory of Separation Membranes and Membrane Processes CHINA
| | - Kecheng Cao
- ShanghaiTech University School of Physical Science and Technology CHINA
| | - Xuanzhi Mao
- Chinese Academy of Sciences Shanghai Institute of Applied Physics CHINA
| | - Maojiang Zhang
- Chizhou University School of Materials and Environmental Engineering CHINA
| | - Linwei He
- Soochow University School for Radiological&Interdisciplinary sciences CHINA
| | - Xiao Dong
- Soochow University School for Radiological&Interdisciplinary sciences CHINA
| | - Jie Shu
- Soochow University Analysis and Testing Center CHINA
| | - Hongchun Dong
- Soochow University Analysis and Testing Center CHINA
| | - Fuwan Zhai
- Soochow University School for Radiological&Interdisciplinary sciences CHINA
| | - Rongfang Shen
- Chinese Academy of Sciences Shanghai Institute of Applied Physics CHINA
| | - Mengjia Yuan
- Soochow University School for Radiological&Interdisciplinary sciences CHINA
| | - Xiaofang Zhao
- Soochow University School for Radiological&Interdisciplinary sciences CHINA
| | - Guozhong Wu
- Chinese Academy of Sciences Shanghai Institute of Applied Physics CHINA
| | - Zhifang Chai
- Soochow University School for Radiological&Interdisciplinary sciences CHINA
| | - Shuao Wang
- Soochow University School for Radiological and interdisciplinary Sciences 199 Renai Road 215123 Suzhou CHINA
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Milotti V, Berkmann C, Laranjeira J, Cui W, Cao K, Zhang Y, Kaiser U, Yanagi K, Melle-Franco M, Shi L, Pichler T, Ayala P. Unravelling the Complete Raman Response of Graphene Nanoribbons Discerning the Signature of Edge Passivation. Small Methods 2022; 6:e2200110. [PMID: 35733057 DOI: 10.1002/smtd.202200110] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 05/17/2022] [Indexed: 06/15/2023]
Abstract
Controlling the edge morphology and terminations of graphene nanoribbons (GNR) allows tailoring their electronic properties and boosts their application potential. One way of making such structures is encapsulating them inside single-walled carbon nanotubes. Despite the versatility of Raman spectroscopy to resolve strong spectral signals of these systems, discerning the response of long nanoribbons from that of any residual precursor remaining outside after synthesis has been so far elusive. Here, the terrylene dye is used as precursor to make long and ultra-narrow armchair-edged GNR inside nanotubes. The alignment and characteristic length of terrylene encapsulated parallel to the tube's axis facilitates the ribbon formation via polymerization, with high stability up to 750 °C when the hybrid system is kept in high vacuum. A high temperature annealing is used to remove the terrylene external molecules and a subtraction model based on the determination of a scaling factor related to the G-band response of the system is developed. This not only represents a critical step forward toward the analysis of the nanoribbon-nanotube system, but it is a study that enables unraveling the Raman signatures of the individual CH-modes (the signature of edge passivation) for GNR for the first time with unprecedented detail.
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Affiliation(s)
- Valeria Milotti
- Faculty of Physics, University of Vienna, 1090, Vienna, Austria
| | | | - Jorge Laranjeira
- CICECO - Aveiro Institute of Materials, Department of Physics, University of Aveiro, 3810-193, Aveiro, Portugal
| | - Weili Cui
- Faculty of Physics, University of Vienna, 1090, Vienna, Austria
| | - Kecheng Cao
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
| | - Yifan Zhang
- State Key Laboratory of Optoelectronic Materials and Technologies, Nanotechnology Research Center, Guangzhou Key Laboratory of Flexible Electronic Materials and Wearable Devices, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, China
- School of Engineering, Huzhou University, Huzhou, Zhejiang, 313000, P. R. China
| | - Ute Kaiser
- Central Facility for Electron Microscopy, Electron Microscopy Group of Materials Science, Ulm University, 89081, Ulm, Germany
| | - Kazuhiro Yanagi
- Department of Physics, Tokyo Metropolitan University, Tokyo, 192-039, Japan
| | - Manuel Melle-Franco
- CICECO - Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193, Aveiro, Portugal
| | - Lei Shi
- State Key Laboratory of Optoelectronic Materials and Technologies, Nanotechnology Research Center, Guangzhou Key Laboratory of Flexible Electronic Materials and Wearable Devices, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, China
| | - Thomas Pichler
- Faculty of Physics, University of Vienna, 1090, Vienna, Austria
| | - Paola Ayala
- Faculty of Physics, University of Vienna, 1090, Vienna, Austria
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Hao J, Zhuang Z, Cao K, Gao G, Wang C, Lai F, Lu S, Ma P, Dong W, Liu T, Du M, Zhu H. Unraveling the electronegativity-dominated intermediate adsorption on high-entropy alloy electrocatalysts. Nat Commun 2022; 13:2662. [PMID: 35562523 PMCID: PMC9106752 DOI: 10.1038/s41467-022-30379-4] [Citation(s) in RCA: 65] [Impact Index Per Article: 32.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Accepted: 04/22/2022] [Indexed: 01/17/2023] Open
Abstract
High-entropy alloys have received considerable attention in the field of catalysis due to their exceptional properties. However, few studies hitherto focus on the origin of their outstanding performance and the accurate identification of active centers. Herein, we report a conceptual and experimental approach to overcome the limitations of single-element catalysts by designing a FeCoNiXRu (X: Cu, Cr, and Mn) High-entropy alloys system with various active sites that have different adsorption capacities for multiple intermediates. The electronegativity differences between mixed elements in HEA induce significant charge redistribution and create highly active Co and Ru sites with optimized energy barriers for simultaneously stabilizing OH* and H* intermediates, which greatly enhances the efficiency of water dissociation in alkaline conditions. This work provides an in-depth understanding of the interactions between specific active sites and intermediates, which opens up a fascinating direction for breaking scaling relation issues for multistep reactions.
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Affiliation(s)
- Jiace Hao
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, China
| | - Zechao Zhuang
- Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Kecheng Cao
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
| | - Guohua Gao
- Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology, Key Laboratory of Road and Traffic Engineering of the Ministry of Education, Tongji University, Shanghai, 200092, China
| | - Chan Wang
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, China
| | - Feili Lai
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, Leuven, 3001, Belgium
| | - Shuanglong Lu
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, China
| | - Piming Ma
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, China
| | - Weifu Dong
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, China
| | - Tianxi Liu
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, China
| | - Mingliang Du
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, China
| | - Han Zhu
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, China.
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25
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Hao J, Zhuang Z, Hao J, Cao K, Hu Y, Wu W, Lu S, Wang C, Zhang N, Wang D, Du M, Zhu H. Strain Relaxation in Metal Alloy Catalysts Steers the Product Selectivity of Electrocatalytic CO 2 Reduction. ACS Nano 2022; 16:3251-3263. [PMID: 35089016 DOI: 10.1021/acsnano.1c11145] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Strain engineering in bimetallic alloy structures is of great interest in electrochemical CO2 reduction reactions (CO2RR), in which it simultaneously improves electrocatalytic activity and product selectivity by optimizing the binding properties of intermediates. However, a reliable synthetic strategy and systematic understanding of the strain effects in the CO2RR are still lacking. Herein, we report a strain relaxation strategy used to determine lattice strains in bimetal MNi alloys (M = Pd, Ag, and Au) and realize an outstanding CO2-to-CO Faradaic efficiency of 96.6% and show the outstanding activity and durability toward a Zn-CO2 battery. Molecular dynamics (MD) simulations predict that the relaxation of strained PdNi alloys (s-PdNi) is correlated with increases in synthesis temperature, and the high temperature activation energy drives complete atomic mixing of multiple metal atoms to allow for regulation of lattice strains. Density functional theory (DFT) calculations reveal that strain relaxation effectively improves CO2RR activity and selectivity by optimizing the formation energies of *COOH and *CO intermediates on s-PdNi alloy surfaces, as also verified by in situ spectroscopic investigations. This approach provides a promising approach for catalyst design, enabling independent optimization of formation energies of reaction intermediates to improve catalytic activity and selectivity simultaneously.
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Affiliation(s)
- Jican Hao
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China
| | - Zechao Zhuang
- Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China
| | - Jiace Hao
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China
| | - Kecheng Cao
- School of Physical Science and Technology, Shanghai Tech University, Shanghai 201210, P. R. China
| | - Yuxiong Hu
- School of Physical Science and Technology, Shanghai Tech University, Shanghai 201210, P. R. China
| | - Wenbo Wu
- Institute of Molecular Aggregation Science, Tianjin University, Tianjin 300072, P. R. China
| | - Shuanglong Lu
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China
| | - Chan Wang
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China
| | - Nan Zhang
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China
| | - Dingsheng Wang
- Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China
| | - Mingliang Du
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China
| | - Han Zhu
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China
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Luo Y, Wang LL, Yang Z, Wang XD, Cao K, Wu Q, Xia Y, He TY, Weng RH, Ling JY, Luo SL, Yang J. [Cartilage hair hypoplasia with severe combined immunodeficiency caused by a novel RMRP gene variant]. Zhonghua Er Ke Za Zhi 2021; 59:1090-1092. [PMID: 34856671 DOI: 10.3760/cma.j.cn112140-20210322-00245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Y Luo
- Department of Rheumatology & Immunology, Shenzhen Children's Hospital, Shenzhen 518038, China
| | - L L Wang
- Department of Rheumatology & Immunology, Shenzhen Children's Hospital, Shenzhen 518038, China
| | - Z Yang
- Department of Rheumatology & Immunology, Shenzhen Children's Hospital, Shenzhen 518038, China
| | - X D Wang
- Department of Hematological Oncology,Shenzhen Children's Hospital, Shenzhen 518038, China
| | - K Cao
- Department of Clinical Laboratory, Shenzhen Children's Hospital, Shenzhen 518038, China
| | - Q Wu
- Department of Rheumatology & Immunology, Shenzhen Children's Hospital, Shenzhen 518038, China
| | - Y Xia
- Department of Rheumatology & Immunology, Shenzhen Children's Hospital, Shenzhen 518038, China
| | - T Y He
- Department of Rheumatology & Immunology, Shenzhen Children's Hospital, Shenzhen 518038, China
| | - R H Weng
- Department of Rheumatology & Immunology, Shenzhen Children's Hospital, Shenzhen 518038, China
| | - J Y Ling
- Department of Rheumatology & Immunology, Shenzhen Children's Hospital, Shenzhen 518038, China
| | - S L Luo
- Department of Rheumatology & Immunology, Shenzhen Children's Hospital, Shenzhen 518038, China
| | - J Yang
- Department of Rheumatology & Immunology, Shenzhen Children's Hospital, Shenzhen 518038, China
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27
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Luo XJ, Cao K, Liu J, Duan QY, Chen SY, Zhang Y, Huang T, Mao XN, Li CG, Chen YS. [Gene analysis and clinical features of MYH9-related disease]. Zhonghua Er Ke Za Zhi 2021; 59:957-962. [PMID: 34711031 DOI: 10.3760/cma.j.cn112140-20210507-00389] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Objective: To identify gene variants and investigate clinical features of nonmuscle myosin heavy chain 9-related disease (MYH9-RD). Methods: In this retrospective study, the data of patients with MYH9-RD admitted to Shenzhen Children's Hospital from July 2017 to September 2020 were extracted. The gene variants, clinical features and laboratory tests results were summarized. Results: Among the 6 children, 4 were males and 2 were females, aged 4.0 (0.5-7.6) years. Main clinical manifestations included thrombocytopenia (6 cases), epistaxis (3 cases), petechias (2 cases), traumatic hematoma (1 case), and abnormal liver enzymes (1 case). One patient had no family history, and the other 5 cases were pedigrees. Two pedigrees (2 cases) had long-term microscopic hematuria, one pedigree (2 cases) had history of early cataract, and three pedigrees (5 cases) had chronic mild elevation of liver enzymes. Four MYH9 gene variants were found in 12 patients, including c.2104C>T(p.R702C) in exon 17, c.4270G>A(p.D1424N) in exon 31, c.5521G>A (p.E1841K) in exon 39, and c.5797C>T (p.R1933X) in exon 41. According to the family pedigrees analysis, except for the case of variant in exon 17 which was spontaneous mutation with no family history, the other variants were from their father or mother. The complete blood count results showed a decreased platelet number in these patients, and the counting results of the automated hematology analyzer were significantly lower than that of manual counting method ((33.4±17.2) × 10⁹ vs. (60.4±21.0) × 109/L,t=-5.83, P<0.05). The examination of the peripheral blood smear revealed the presence of thrombocytopenia with giant platelets and granulocyte inclusion bodies. The MYH9 gene variant (R702C) located at the N-terminus head domain of non-muscle myosin heavy chain ⅡA (NMMHC-ⅡA), which has ATPase activity, led to severe reduction of platelet number (<20×109/L) and obscure granulocyte inclusion bodies. However, higher platelet numbers (40×109-80×109/L) and obvious granulocyte inclusion bodies were observed in patients with tail-position mutations at C-terminus. Conclusions: The clinical phenotypes of MYH9-RD were variable. The mutations in certain regions of MYH9 gene were related to platelet count and granulocyte inclusion bodies. MYH9-RD should be considered in individuals with unknown etiology and persistent thrombocytopenia which is non-responsive to conventional treatment, regardless of family history. Complete blood count and blood smear morphology examinations are the first steps to screen and diagnose the disease. The laboratory should pay attention to the morphological review rules and standardized reports.
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Affiliation(s)
- X J Luo
- Department of Clinical Laboratory, Shenzhen Children's Hospital, Shenzhen 518038, China
| | - K Cao
- Department of Clinical Laboratory, Shenzhen Children's Hospital, Shenzhen 518038, China
| | - J Liu
- Department of Clinical Laboratory, Shenzhen Children's Hospital, Shenzhen 518038, China
| | - Q Y Duan
- Department of Clinical Laboratory, Shenzhen Children's Hospital, Shenzhen 518038, China
| | - S Y Chen
- Department of Clinical Laboratory, Shenzhen Children's Hospital, Shenzhen 518038, China
| | - Y Zhang
- Department of Clinical Laboratory, Shenzhen Children's Hospital, Shenzhen 518038, China
| | - T Huang
- Department of Clinical Laboratory, Shenzhen Children's Hospital, Shenzhen 518038, China
| | - X N Mao
- Department of Clinical Laboratory, Shenzhen Children's Hospital, Shenzhen 518038, China
| | - C G Li
- Department of Hematological Oncology, Shenzhen Children's Hospital, Shenzhen 518038, China
| | - Y S Chen
- Department of Clinical Laboratory, Shenzhen Children's Hospital, Shenzhen 518038, China
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Bensadoun RJ, Bollet M, Liem X, Cao K, Magné N. CareMin650, nouveau dispositif de photobiomodulation pour la prévention et le traitement des mucites orales et des radiodermites : résultats de l’étude SAFE PBM. Cancer Radiother 2021. [DOI: 10.1016/j.canrad.2021.07.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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29
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Wei ZY, Wang LY, Chen QK, Cao K, Zhang Y, Liang QF. [Correlation of inflammatory cells and corneal nerve damage in fungal keratitis on in vivo confocal microscopy]. Zhonghua Yan Ke Za Zhi 2021; 57:580-588. [PMID: 34344118 DOI: 10.3760/cma.j.cn112142-20201010-00647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Objective: To investigate the relationship between inflammatory cell infiltration and nerve damage in patients with fungal keratitis at different degrees of severity. Methods: Retrospective study. A total of 44 consecutive patients (44 eyes) with fungal keratitis in Beijing Tongren Hospital Affiliated to Capital Medical University from January 2017 to December 2019 were selected as the patient group, including 30 males and 14 females, with an age of (58.3±11.5) years old. Twenty healthy people (20 eyes) were included as control group. Slit-lamp microscopy was performed to observe the corneal ulcer. According to the diameter of corneal ulcer, patients were divided into mild, moderate and severe groups. With in vivo confocal microscopic ,the images were obtained from the epithelial layer to the endothelial layer in the central cornea and superior, inferior, nasal and temporal peripheral cornea. Parameters of the maximum density of fungal hyphae, the maximum depth of hyphal infiltration, the density, area and length of dendritic cells (DCs), the nerve density, and the number and curvature of nerve trunks were collected. The Kruskal-Wallis test, Wilcoxon test, and Spearman correlation analysis were used for analyses. Results: On confocal microscopy, many uniform, highly reflective, segment-like structures in parallel or staggered rows were detected in the cornea, with a certain degree of physiological curvature and branching. Quantitative analysis of hyphal density found that the median rating of hyphal density was 2.6 (2.0, 3.0), mainly with medium to large amounts of hyphae. Most hyphae were 100-150 μm in depth (18 cases, 40.9%), and the maximum depth of hyphae in 95.5% (42 cases) of patients was within 300 μm. The hyphal invasion depth in the mild group was 89.4 (50.5, 106.8) μm, in the moderate group was 133 (122, 203) μm, and in the severe group was 135 (74, 151) μm. As the severity of the disease increased, the depth of hyphal invasion increased (F=4.248, P=0.001). Compared with the control group, the DC density [166 (81.3, 212.5) vs. 24.0 (20.8, 32.3) cells/μm2], area [441.3 (291.9, 529.5) vs. 63.7 (47.7, 70.3) μm2] and length [68.3 (39.4, 91.0) vs. 9.2 (7.0, 11.3) μm] increased in patients (W=493.5, 500.0, 500.0; P<0.01). The nerve density [5 398.3 (3 202.7, 6 828.3) vs. 19 171.8 (17 558.8, 21 550.4) μm/mm2; t=-14.448, P<0.01] and the length [692.7 (402.0, 925.1) vs.2 138.4 (1 940.4, 2 597.2) μm; t=-11.930, P<0.01] and number [2.9 (2.0,3.0) vs. 6.0 (5.5,7.0); t=-8.282, P<0.01] of nerve trunks in patients decreased. There were strong negative correlations between the nerve density, the number of nerve trunks, and the DC density (r=-0.555, -0.466; P<0.01). Conclusions: The depth of fungal hypha invasion in patients with fungal keratitis is mainly concentrated in the epithelial layer and superficial stroma layer. The density of mature dendritic cells in the lesion area was negatively correlated with the density and number of subbasal nerves. The density of subbasal nerves decreased as the increase of the severity of the lesion. (Chin J Ophthalmol, 2021, 57: 580-588).
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Affiliation(s)
- Z Y Wei
- Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Key Laboratory of Ophthalmology and Visual Sciences, Beijing 10005, China
| | - L Y Wang
- Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Key Laboratory of Ophthalmology and Visual Sciences, Beijing 10005, China
| | - Q K Chen
- Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Key Laboratory of Ophthalmology and Visual Sciences, Beijing 10005, China
| | - K Cao
- Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Key Laboratory of Ophthalmology and Visual Sciences, Beijing 10005, China
| | - Y Zhang
- Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Key Laboratory of Ophthalmology and Visual Sciences, Beijing 10005, China
| | - Q F Liang
- Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Key Laboratory of Ophthalmology and Visual Sciences, Beijing 10005, China
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30
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Loap P, Loirat D, Berger F, Rodrigues M, Bazire L, Pierga J, Ricci F, Cao K, Vincent-Salomon A, Laki F, Ezzili C, Jochem A, Raizonville L, Mosseri V, Ezzalfani M, Fourquet A, Kirova Y. OC-0630 Olaparib combined with radiotherapy for TNBC: 1-year toxicity report of the RADIOPARP phase 1 trial. Radiother Oncol 2021. [DOI: 10.1016/s0167-8140(21)06986-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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31
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Cui W, Shi L, Cao K, Kaiser U, Saito T, Ayala P, Pichler T. Isotopic Labelling of Confined Carbyne. Angew Chem Int Ed Engl 2021; 60:9897-9901. [PMID: 33599368 DOI: 10.1002/anie.202017356] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 02/15/2021] [Indexed: 11/09/2022]
Abstract
Carbyne is a one-dimensional allotrope of carbon consisting of a linear chain of carbon atoms bonded to each other with exceptional strength. Its outstanding mechanical, optical, and electronic properties have been theoretically predicted, but its stability has only been achieved when grown encapsulated in the hollow core of carbon nanotubes. One of the advantages of this confinement is that its properties can be controlled by the chain's length and surrounding environment. We investigated an alternative way of gaining control of its properties is using isotope labelling as tuning mechanism. The optimized liquid precursor was first chosen among several options, which can greatly enhance the yield of the confined carbyne. Then isotopic labelled liquid precursor was encapsulated for further synthesis of isotopic labelled confined carbyne. This allowed us to obtain pioneering results on isotope engineered carbyne with around 11.9 % of 13 C-labelling using 13 C-methanol as precursor.
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Affiliation(s)
- Weili Cui
- Faculty of Physics, University of Vienna, 1090, Vienna, Austria
| | - Lei Shi
- State Key Laboratory of Optoelectronic Materials and Technologies, Nanotechnology Research Center, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, P. R. China
| | - Kecheng Cao
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, P. R. China.,Central Facility for Electron Microscopy, Electron Microscopy Group of Materials Science, Ulm University, 89081, Ulm, Germany
| | - Ute Kaiser
- Central Facility for Electron Microscopy, Electron Microscopy Group of Materials Science, Ulm University, 89081, Ulm, Germany
| | - Takeshi Saito
- Nanomaterials Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, 305-8565, Japan
| | - Paola Ayala
- Faculty of Physics, University of Vienna, 1090, Vienna, Austria
| | - Thomas Pichler
- Faculty of Physics, University of Vienna, 1090, Vienna, Austria
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32
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Cui W, Shi L, Cao K, Kaiser U, Saito T, Ayala P, Pichler T. Isotopic Labelling of Confined Carbyne. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202017356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Weili Cui
- Faculty of Physics University of Vienna 1090 Vienna Austria
| | - Lei Shi
- State Key Laboratory of Optoelectronic Materials and Technologies Nanotechnology Research Center School of Materials Science and Engineering Sun Yat-sen University Guangzhou 510275 P. R. China
| | - Kecheng Cao
- School of Physical Science and Technology ShanghaiTech University Shanghai 201210 P. R. China
- Central Facility for Electron Microscopy Electron Microscopy Group of Materials Science Ulm University 89081 Ulm Germany
| | - Ute Kaiser
- Central Facility for Electron Microscopy Electron Microscopy Group of Materials Science Ulm University 89081 Ulm Germany
| | - Takeshi Saito
- Nanomaterials Research Institute National Institute of Advanced Industrial Science and Technology (AIST) Tsukuba Ibaraki 305-8565 Japan
| | - Paola Ayala
- Faculty of Physics University of Vienna 1090 Vienna Austria
| | - Thomas Pichler
- Faculty of Physics University of Vienna 1090 Vienna Austria
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33
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Lyu YY, Wu JJ, Guo W, Peng L, Wang YX, Wu M, Cao K, Jie Y. [Clinical observation and analysis on the effect of orthokeratology in myopic anisometropic children]. Zhonghua Yu Fang Yi Xue Za Zhi 2021; 55:471-477. [PMID: 33858058 DOI: 10.3760/cma.j.cn112150-20210203-00119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To evaluate the clinical effects of orthokeratology lens on children with myopic anisometropia. Methods: Retrospective case series study. The data of 226 myopic anisometropia children, (10.83±1.56)years old, including 95 males and 131 females, fitted with orthokeratology(OK) lens in Beijing Tongren Hospital from June 2017 to June 2019 were collected. According to the lens wearing condition and baseline anisometropia, they were divided into four groups: group A1 with an average age of (10.68±1.66) years (bilateral OK lens wearing with low anisometropia, 1.0 D≤SE difference<2.5 D, 50 males and 61 females), group A2 with an average age of (11.24±1.38) years (bilateral OK lens wearing with moderate and high anisometropia, SE difference≥2.5 D, 10 males and 23 females), group B1 with an average age of (10.79±1.51) years (unilateral OK lens wearing with low anisometropia, 1.0 D≤SE difference<2.5 D, 17 males and 21 females) and group B2 with an average age of (10.97±1.60) years (unilateral OK lens wearing with moderate and high anisometropia, SE difference≥2.5 D, 18 males and 26 females). After wearing OK lens for one year, the changes of axial length(AL) and AL difference were observed and statistically analyzed. Results: (1) AL changes: after wearing OK-lens for one year, AL of each eye increased. In group A1, the AL of the more myopic eyes and the less myopic eyes increased by (0.20±0.21) mm and (0.24±0.22) mm respectively, and the difference was statistically significant (t=-3.208, P=0.002); in group A2, the AL growth of the more myopic eyes and the less myopic eyes were (0.04±0.11) mm and (0.17±0.14) mm, and the difference was statistically significant (t=-5.545, P<0.001). In group B1, the AL elongation of the more myopic eyes and the less myopic eyes were (0.14±0.21) mm and (0.39±0.23) mm, and in group B2, the AL growth of the more myopic eyes and the less myopic eyes were (0.11±0.14) mm and (0.54±0.24) mm, with statistically significant differences(t=-6.533, -11.643; all P<0.001). There was a linear correlation between AL elongation and age of the more myopic eyes and the less myopic eyes in group A1(corrected R2=0.208, 0.237) and group A2 (corrected R2=0.169, 0.360). There was no linear correlation of the more myopic eyes and the less myopic eyes between AL change and age or baseline myopia in group B1 (F=0.514, 1.205;P=0.602, 0.312) and group B2 (F=0.841, 0.056; P=0.439, 0.946). (2)Change of AL difference: after wearing OK lens for one year, the changes of AL difference in groupA1, A2, B1 and B2 were (-0.04±0.14) mm,(-0.13±0.13) mm,(-0.26±0.24) mm and (-0.43±0.25) mm, and the decrease of AL difference in moderate and high anisometropia groups were greater than that in low anisometropia groups (t =-3.211, -3.180; P=0.002, 0.002).There was a linear correlation between the reduction of AL difference and baseline anisometropia in group A1, A2 and B2 (corrected R2=0.099, 0.149, 0.230), and there was no linear relationship between the decrease of AL difference and the baseline anisometropia in group B1 (F=0.014, P=0.908). Conclusions: Orthokeratology could effectively control the progression of myopia and to treat anisometropia. The effect of myopia control was better in the older binocular OK lens wearers, and for the patients with greater baseline anisometropia, the treatment effect of anisometropia was better.
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Affiliation(s)
- Y Y Lyu
- Tongren Vision Care, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - J J Wu
- Tongren Vision Care, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - W Guo
- Tongren Vision Care, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - L Peng
- Tongren Vision Care, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - Y X Wang
- Tongren Vision Care, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - M Wu
- Tongren Vision Care, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - K Cao
- Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University/Beijing Institute of Ophthalmology/Beijing Ophthalmology and Visual Sciences Key Laboratory, Beijing 100730, China
| | - Y Jie
- Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University/Beijing Institute of Ophthalmology/Beijing Ophthalmology and Visual Sciences Key Laboratory, Beijing 100730, China
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Ben Dhia S, Loap P, Loirat D, Vincent-Salomon A, Cao K, Escalup L, Fourquet A, Kirova Y. [Concurrent radiation therapy and dual HER2 blockade in breast cancer: Assessment of toxicity]. Cancer Radiother 2021; 25:424-431. [PMID: 33771453 DOI: 10.1016/j.canrad.2020.06.037] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 06/29/2020] [Accepted: 06/30/2020] [Indexed: 01/03/2023]
Abstract
PURPOSE The tolerance of the concurrent use of radiotherapy, pertuzumab and trastuzumab is unknown. The purpose of this study was to evaluate the toxicity of this association in patients treated for HER2 positive metastatic and/or locally recurrent unrespectable breast cancer. MATERIAL AND METHODS A retrospective study was performed in our institution for all consecutive patients treated with concurrent irradiation, pertuzumab and trastuzumab. The radiotherapy was performed while pertuzumab and trastuzumab were administrated as a maintenance treatment at the dose of 420mg (total dose) and 6mg/kg respectively every 3 weeks without chemotherapy. Toxicity was assessed according to the National Cancer Institute Common Terminology Criteria for Adverse Events version 4.0. Left ventricular ejection fraction (LVEF) was measured at baseline and then every 3-4 months. RESULTS We studied 77 patients. treated in between 2013 and 2019 with median follow-up of 38 months (range 0-264 months). Median age was 53 years (33-86). There were 50 patients (64.9%) with metastatic and 27 patients (35.1%) with recurrent disease. All patients received docetaxel followed by P-T as first line treatment and they received 34 cycles (10-85) of pertuzumab and trastuzumab. All patients experienced partial or complete response according to RECIST criteria. Irradiation volumes were whole breast (41 patients, 53.2%) and chest wall (29 patients, 37.7%) at a dose of 50Gy with a median duration of 39 days. Radiotherapy of lymph nodes was performed in 53 patients (68.8%) as following: supraclavicular-infraclavicular and axillary lymph nodes in 52 patients (67.5%), and internal mammary nodes in 31 patients (40.3%). For 20 patients. (26.0%) radiotherapy was palliative: bone irradiation (12 patients, 15.6%), whole-brain radiotherapy (2 patients, 2.6%), cerebral metastasis irradiation (6 patients). As early toxicity we observed: radio dermatitis as following: 36 patients (46.8%) presented grade I, 17 patients (22.1%) presented grade II, and 3 patients (3.9%) presented grade III. One patient (1.3%) presented grade II esophagitis. One patient (1.3%) presented asymptomatic decrease of LVEF during treatment and 6 patients (7.7%) presented a decrease of LVEF. There was no radiation-induced pneumonitis. As late toxicity, we observed 1 (1.3%) case of grade I and 1 (1.3%) with grade II telangiectasia. There was 1 case (1.3%) of grade III cardiac toxicity, 8 months after the concurrent treatment. CONCLUSION The concurrent use of radiotherapy, pertuzumab and trastuzumab is feasible with good tolerance. Larger prospective data with longer follow-up is needed to confirm these results.
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Affiliation(s)
- S Ben Dhia
- Institut Curie, 26, rue d'Ulm, 75005 Paris, France
| | - P Loap
- Institut Curie, 26, rue d'Ulm, 75005 Paris, France
| | - D Loirat
- Institut Curie, 26, rue d'Ulm, 75005 Paris, France
| | | | - K Cao
- Institut Curie, 26, rue d'Ulm, 75005 Paris, France
| | - L Escalup
- Institut Curie, 26, rue d'Ulm, 75005 Paris, France
| | - A Fourquet
- Institut Curie, 26, rue d'Ulm, 75005 Paris, France
| | - Y Kirova
- Institut Curie, 26, rue d'Ulm, 75005 Paris, France.
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Zhang BY, Chen M, Chen XC, Cao K, You Y, Qian YJ, Yu WK. Berberine reduces circulating inflammatory mediators in patients with severe COVID-19. Br J Surg 2021; 108:e9-e11. [PMID: 33640910 PMCID: PMC7799351 DOI: 10.1093/bjs/znaa021] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Accepted: 09/07/2020] [Indexed: 01/14/2023]
Affiliation(s)
- B Y Zhang
- Department of Critical Care Medicine, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, No. 321 Zhongshan Road, Nanjing, Jiangsu Province 210008, China
| | - M Chen
- Department of Critical Care Medicine, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, No. 321 Zhongshan Road, Nanjing, Jiangsu Province 210008, China
| | - X C Chen
- Department of Critical Care Medicine, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, No. 321 Zhongshan Road, Nanjing, Jiangsu Province 210008, China
| | - K Cao
- Department of Critical Care Medicine, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, No. 321 Zhongshan Road, Nanjing, Jiangsu Province 210008, China
| | - Y You
- Department of Critical Care Medicine, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, No. 321 Zhongshan Road, Nanjing, Jiangsu Province 210008, China
| | - Y J Qian
- Department of Critical Care Medicine, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, No. 321 Zhongshan Road, Nanjing, Jiangsu Province 210008, China
| | - W K Yu
- Department of Critical Care Medicine, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, No. 321 Zhongshan Road, Nanjing, Jiangsu Province 210008, China
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Ma Y, Ma Y, Diemant T, Cao K, Kaiser U, Behm RJ, Varzi A, Passerini S. Embedding Heterostructured α‐MnS/MnO Nanoparticles in S‐Doped Carbonaceous Porous Framework as High‐Performance Anode for Lithium‐Ion Batteries. ChemElectroChem 2021. [DOI: 10.1002/celc.202100110] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Yuan Ma
- Helmholtz Institute Ulm (HIU) Electrochemical Energy Storage Helmholtzstrasse 11 89081 Ulm Germany
- Karlsruhe Institute of Technology (KIT) P.O. Box 3640 76021 Karlsruhe Germany
| | - Yanjiao Ma
- Helmholtz Institute Ulm (HIU) Electrochemical Energy Storage Helmholtzstrasse 11 89081 Ulm Germany
- Karlsruhe Institute of Technology (KIT) P.O. Box 3640 76021 Karlsruhe Germany
| | - Thomas Diemant
- Institute of Surface Chemistry and Catalysis Ulm University Albert-Einstein-Allee 47 89081 Ulm Germany
| | - Kecheng Cao
- Central Facility for Electron Microscopy Group of Electron Microscopy of Materials Science Ulm University Albert-Einstein-Allee 11 89081 Ulm Germany
| | - Ute Kaiser
- Central Facility for Electron Microscopy Group of Electron Microscopy of Materials Science Ulm University Albert-Einstein-Allee 11 89081 Ulm Germany
| | - R. Jürgen Behm
- Helmholtz Institute Ulm (HIU) Electrochemical Energy Storage Helmholtzstrasse 11 89081 Ulm Germany
- Institute of Surface Chemistry and Catalysis Ulm University Albert-Einstein-Allee 47 89081 Ulm Germany
| | - Alberto Varzi
- Helmholtz Institute Ulm (HIU) Electrochemical Energy Storage Helmholtzstrasse 11 89081 Ulm Germany
- Karlsruhe Institute of Technology (KIT) P.O. Box 3640 76021 Karlsruhe Germany
| | - Stefano Passerini
- Helmholtz Institute Ulm (HIU) Electrochemical Energy Storage Helmholtzstrasse 11 89081 Ulm Germany
- Karlsruhe Institute of Technology (KIT) P.O. Box 3640 76021 Karlsruhe Germany
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Cao K, Zhang Q, Wang NL. [Prevalence and risk factors of common blinding ocular diseases among people aged 30 years and above in rural area of Handan]. Zhonghua Yi Xue Za Zhi 2020; 100:3841-3845. [PMID: 33371628 DOI: 10.3760/cma.j.cn112137-20200824-02452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Objective: To explore the prevalence and risk factors of common blinding ocular diseases in the population aged 30 years and above in rural areas of Handan City from 2006 to 2012. Methods: A cohort study with 6 830 subjects from rural areas of Handan City, Hebei Province was designed and conducted. The follow-up duration was 6 years, and the prevalence and incidence of common blinding diseases were evaluated. Logistic regression was used to explore the influencing factors of common blinding ocular diseases. Results: In 2006, 6 830 people participated in the baseline survey. There were 3 163 (46.31%) males and 3 667 (53.69%) females. The average age was (52.3±12.2) years (range, 30 to 97 years). There were 3 435 subjects who had common chronic systematic diseases, with a prevalence of 50.29%. In addition, 1 250 people suffered from common blinding ocular diseases, and the prevalence was 18.30%. There were 4 118 subjects without common blinding ocular diseases at baseline who participated in the six-year follow-up, during the 6-year follow-up, 247 participants developed common blinding ocular diseases. 9% (171/1 899) of patients with chronic systematic diseases developed common blinding ocular diseases, while only 3.42% (76/2 219) of normal subjects developed common blinding ocular diseases, with a statistically significant difference (χ(2)=56.504, P<0.001). The incidence of common blinding ocular diseases was age-dependent. Multivariate regression analysis showed that age (OR=1.045, 95%CI: 1.028-1.062, P<0.001), intraoccular pressure (IOP) (OR=1.064, 95% CI: 1.014-1.116, P=0.011) and baseline chronic diseases (OR=1.749, 95% CI: 1.288-2.375, P<0.001) were risk factors for common blinding ocular diseases. Moreover, the contribution of age, IOP and chronic systematic diseases to the model was 0.436, 0.084 and 0.511, respectively. Conclusions: The prevalence of common blinding ocular diseases among people over 30 years old in Handan is relatively high. From 2006 to 2012, about 1.5% patients of chronic systematic diseases developed common blinding ocular diseases each year. Moreover, chronic systematic diseases increase the risk of blinding ocular diseases sharply, and the effect is stronger than age and intraocular pressure.
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Affiliation(s)
- K Cao
- Beijing Institute of Ophthalmology, Beijing Tongren Hospital, Capital Medical University / Beijing Key Laboratory of Ophthalmology & Visual Sciences, Beijing 100730, China
| | - Q Zhang
- Beijing Institute of Ophthalmology, Beijing Tongren Hospital, Capital Medical University / Beijing Key Laboratory of Ophthalmology & Visual Sciences, Beijing 100730, China
| | - N L Wang
- Beijing Institute of Ophthalmology, Beijing Tongren Hospital, Capital Medical University / Beijing Key Laboratory of Ophthalmology & Visual Sciences, Beijing 100730, China
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Cao K, Skowron ST, Stoppiello CT, Biskupek J, Khlobystov AN, Kaiser U. Innentitelbild: Direct Imaging of Atomic Permeation Through a Vacancy Defect in the Carbon Lattice (Angew. Chem. 51/2020). Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202014392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Kecheng Cao
- Ulm University Electron Microscopy of Materials Science Central Facility for Electron Microscopy Albert-Einstein-Allee 11 Ulm 89081 Germany
| | - Stephen T. Skowron
- University of Nottingham School of Chemistry University Park Nottingham NG7 2RD UK
| | - Craig T. Stoppiello
- University of Nottingham School of Chemistry University Park Nottingham NG7 2RD UK
- University of Nottingham Nanoscale & Microscale Research Centre (nmRC) University Park Nottingham NG7 2RD UK
| | - Johannes Biskupek
- Ulm University Electron Microscopy of Materials Science Central Facility for Electron Microscopy Albert-Einstein-Allee 11 Ulm 89081 Germany
| | - Andrei N. Khlobystov
- University of Nottingham School of Chemistry University Park Nottingham NG7 2RD UK
- University of Nottingham Nanoscale & Microscale Research Centre (nmRC) University Park Nottingham NG7 2RD UK
| | - Ute Kaiser
- Ulm University Electron Microscopy of Materials Science Central Facility for Electron Microscopy Albert-Einstein-Allee 11 Ulm 89081 Germany
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Cao K, Skowron ST, Stoppiello CT, Biskupek J, Khlobystov AN, Kaiser U. Direct Imaging of Atomic Permeation Through a Vacancy Defect in the Carbon Lattice. Angew Chem Int Ed Engl 2020; 59:22922-22927. [PMID: 32918781 PMCID: PMC7814674 DOI: 10.1002/anie.202010630] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 09/04/2020] [Indexed: 11/09/2022]
Abstract
Porous graphene has shown promise as a new generation of selective membrane for sieving atoms, ions and molecules. However, the atomistic mechanisms of permeation through defects in the graphenic lattice are still unclear and remain unobserved in action, at the atomic level. Here, the direct observation of palladium atoms from a nanoparticle passing through a defect in a single‐walled carbon nanotube one‐by‐one has been achieved with atomic resolution in real time, revealing key stages of the atomic permeation. Bonding between the moving atom and dangling bonds around the orifice, immediately before and after passing through the subnano‐pore, plays an important role in the process. Curvature of the graphenic lattice crucially defines the direction of permeation from concave to convex side due to a difference in metal‐carbon bonding at the curved surfaces as confirmed by density functional theory calculations, demonstrating the potential of porous carbon nanotubes for atom sieving.
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Affiliation(s)
- Kecheng Cao
- Ulm University, Electron Microscopy of Materials Science, Central Facility for Electron Microscopy, Albert-Einstein-Allee 11, Ulm, 89081, Germany
| | - Stephen T Skowron
- University of Nottingham, School of Chemistry, University Park, Nottingham, NG7 2RD, UK
| | - Craig T Stoppiello
- University of Nottingham, School of Chemistry, University Park, Nottingham, NG7 2RD, UK.,University of Nottingham, Nanoscale & Microscale Research Centre (nmRC), University Park, Nottingham, NG7 2RD, UK
| | - Johannes Biskupek
- Ulm University, Electron Microscopy of Materials Science, Central Facility for Electron Microscopy, Albert-Einstein-Allee 11, Ulm, 89081, Germany
| | - Andrei N Khlobystov
- University of Nottingham, School of Chemistry, University Park, Nottingham, NG7 2RD, UK.,University of Nottingham, Nanoscale & Microscale Research Centre (nmRC), University Park, Nottingham, NG7 2RD, UK
| | - Ute Kaiser
- Ulm University, Electron Microscopy of Materials Science, Central Facility for Electron Microscopy, Albert-Einstein-Allee 11, Ulm, 89081, Germany
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40
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Cao K, Skowron ST, Stoppiello CT, Biskupek J, Khlobystov AN, Kaiser U. Inside Cover: Direct Imaging of Atomic Permeation Through a Vacancy Defect in the Carbon Lattice (Angew. Chem. Int. Ed. 51/2020). Angew Chem Int Ed Engl 2020. [DOI: 10.1002/anie.202014392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Kecheng Cao
- Ulm University Electron Microscopy of Materials Science Central Facility for Electron Microscopy Albert-Einstein-Allee 11 Ulm 89081 Germany
| | - Stephen T. Skowron
- University of Nottingham School of Chemistry University Park Nottingham NG7 2RD UK
| | - Craig T. Stoppiello
- University of Nottingham School of Chemistry University Park Nottingham NG7 2RD UK
- University of Nottingham Nanoscale & Microscale Research Centre (nmRC) University Park Nottingham NG7 2RD UK
| | - Johannes Biskupek
- Ulm University Electron Microscopy of Materials Science Central Facility for Electron Microscopy Albert-Einstein-Allee 11 Ulm 89081 Germany
| | - Andrei N. Khlobystov
- University of Nottingham School of Chemistry University Park Nottingham NG7 2RD UK
- University of Nottingham Nanoscale & Microscale Research Centre (nmRC) University Park Nottingham NG7 2RD UK
| | - Ute Kaiser
- Ulm University Electron Microscopy of Materials Science Central Facility for Electron Microscopy Albert-Einstein-Allee 11 Ulm 89081 Germany
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41
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Cao K, Skowron ST, Stoppiello CT, Biskupek J, Khlobystov AN, Kaiser U. Direct Imaging of Atomic Permeation Through a Vacancy Defect in the Carbon Lattice. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202010630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Kecheng Cao
- Ulm University Electron Microscopy of Materials Science Central Facility for Electron Microscopy Albert-Einstein-Allee 11 Ulm 89081 Germany
| | - Stephen T. Skowron
- University of Nottingham School of Chemistry University Park Nottingham NG7 2RD UK
| | - Craig T. Stoppiello
- University of Nottingham School of Chemistry University Park Nottingham NG7 2RD UK
- University of Nottingham Nanoscale & Microscale Research Centre (nmRC) University Park Nottingham NG7 2RD UK
| | - Johannes Biskupek
- Ulm University Electron Microscopy of Materials Science Central Facility for Electron Microscopy Albert-Einstein-Allee 11 Ulm 89081 Germany
| | - Andrei N. Khlobystov
- University of Nottingham School of Chemistry University Park Nottingham NG7 2RD UK
- University of Nottingham Nanoscale & Microscale Research Centre (nmRC) University Park Nottingham NG7 2RD UK
| | - Ute Kaiser
- Ulm University Electron Microscopy of Materials Science Central Facility for Electron Microscopy Albert-Einstein-Allee 11 Ulm 89081 Germany
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Balakrishna B, Menon A, Cao K, Gsänger S, Beil SB, Villalva J, Shyshov O, Martin O, Hirsch A, Meyer B, Kaiser U, Guldi DM, von Delius M. Dynamic Covalent Formation of Concave Disulfide Macrocycles Mechanically Interlocked with Single-Walled Carbon Nanotubes. Angew Chem Int Ed Engl 2020; 59:18774-18785. [PMID: 32544289 PMCID: PMC7590186 DOI: 10.1002/anie.202005081] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Indexed: 02/02/2023]
Abstract
The formation of discrete macrocycles wrapped around single-walled carbon nanotubes (SWCNTs) has recently emerged as an appealing strategy to functionalize these carbon nanomaterials and modify their properties. Here, we demonstrate that the reversible disulfide exchange reaction, which proceeds under mild conditions, can install relatively large amounts of mechanically interlocked disulfide macrocycles on the one-dimensional nanotubes. Size-selective functionalization of a mixture of SWCNTs of different diameters were observed, presumably arising from error correction and the presence of relatively rigid, curved π-systems in the key building blocks. A combination of UV/Vis/NIR, Raman, photoluminescence excitation, and transient absorption spectroscopy indicated that the small (6,4)-SWCNTs were predominantly functionalized by the small macrocycles 12 , whereas the larger (6,5)-SWCNTs were an ideal match for the larger macrocycles 22 . This size selectivity, which was rationalized computationally, could prove useful for the purification of nanotube mixtures, since the disulfide macrocycles can be removed quantitatively under mild reductive conditions.
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Affiliation(s)
- Bugga Balakrishna
- Institute of Organic Chemistry, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Arjun Menon
- Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials, Friedrich-Alexander University Erlangen-Nürnberg, Egerlandstrasse 3, 91058, Erlangen, Germany
| | - Kecheng Cao
- Electron Microscopy of Materials Science, Central Facility for Electron Microscopy, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Sebastian Gsänger
- Interdisciplinary Center for Molecular Materials (ICMM) & Computer-Chemistry-Center (CCC), Friedrich-Alexander University Erlangen-Nürnberg, Nägelsbachstrasse 25, 91052, Erlangen, Germany
| | - Sebastian B Beil
- Institute of Organic Chemistry, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Julia Villalva
- Institute of Organic Chemistry, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Oleksandr Shyshov
- Institute of Organic Chemistry, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Oliver Martin
- Department of Chemistry and Pharmacy & Joint Institute of Advanced Materials and Processes (ZMP), Friedrich-Alexander University Erlangen-Nürnberg, Nikolaus-Fiebiger-Strasse 10, 91058, Erlangen, Germany
| | - Andreas Hirsch
- Department of Chemistry and Pharmacy & Joint Institute of Advanced Materials and Processes (ZMP), Friedrich-Alexander University Erlangen-Nürnberg, Nikolaus-Fiebiger-Strasse 10, 91058, Erlangen, Germany
| | - Bernd Meyer
- Interdisciplinary Center for Molecular Materials (ICMM) & Computer-Chemistry-Center (CCC), Friedrich-Alexander University Erlangen-Nürnberg, Nägelsbachstrasse 25, 91052, Erlangen, Germany
| | - Ute Kaiser
- Electron Microscopy of Materials Science, Central Facility for Electron Microscopy, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Dirk M Guldi
- Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials, Friedrich-Alexander University Erlangen-Nürnberg, Egerlandstrasse 3, 91058, Erlangen, Germany
| | - Max von Delius
- Institute of Organic Chemistry, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
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Guo X, Li Y, Zhang M, Cao K, Tian Y, Qi Y, Li S, Li K, Yu X, Ma L. Colyliform Crystalline 2D Covalent Organic Frameworks (COFs) with Quasi‐3D Topologies for Rapid I
2
Adsorption. Angew Chem Int Ed Engl 2020; 59:22697-22705. [DOI: 10.1002/anie.202010829] [Citation(s) in RCA: 63] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Indexed: 12/19/2022]
Affiliation(s)
- Xinghua Guo
- College of Chemistry Sichuan University Key Laboratory of Radiation Physics & Technology Ministry of Education No. 29 Wangjiang Road Chengdu 610064 P. R. China
| | - Yang Li
- Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China Hefei Anhui 230026 P. R. China
| | - Meicheng Zhang
- College of Chemistry Sichuan University Key Laboratory of Radiation Physics & Technology Ministry of Education No. 29 Wangjiang Road Chengdu 610064 P. R. China
| | - Kecheng Cao
- Electron Microscopy of Materials Science, Central Facility for Electron Microscopy Ulm University Albert-Einstein-Allee 11 89081 Ulm Germany
| | - Yin Tian
- School of Pharmacy Chengdu University of Traditional Chinese Medicine Chengdu 611137 P. R. China
| | - Yue Qi
- College of Chemistry Sichuan University Key Laboratory of Radiation Physics & Technology Ministry of Education No. 29 Wangjiang Road Chengdu 610064 P. R. China
| | - Shoujian Li
- College of Chemistry Sichuan University Key Laboratory of Radiation Physics & Technology Ministry of Education No. 29 Wangjiang Road Chengdu 610064 P. R. China
| | - Kun Li
- College of Chemistry Sichuan University Key Laboratory of Radiation Physics & Technology Ministry of Education No. 29 Wangjiang Road Chengdu 610064 P. R. China
| | - Xiaoqi Yu
- College of Chemistry Sichuan University Key Laboratory of Radiation Physics & Technology Ministry of Education No. 29 Wangjiang Road Chengdu 610064 P. R. China
| | - Lijian Ma
- College of Chemistry Sichuan University Key Laboratory of Radiation Physics & Technology Ministry of Education No. 29 Wangjiang Road Chengdu 610064 P. R. China
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44
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Guo X, Li Y, Zhang M, Cao K, Tian Y, Qi Y, Li S, Li K, Yu X, Ma L. Colyliform Crystalline 2D Covalent Organic Frameworks (COFs) with Quasi‐3D Topologies for Rapid I
2
Adsorption. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202010829] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Xinghua Guo
- College of Chemistry Sichuan University Key Laboratory of Radiation Physics & Technology Ministry of Education No. 29 Wangjiang Road Chengdu 610064 P. R. China
| | - Yang Li
- Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China Hefei Anhui 230026 P. R. China
| | - Meicheng Zhang
- College of Chemistry Sichuan University Key Laboratory of Radiation Physics & Technology Ministry of Education No. 29 Wangjiang Road Chengdu 610064 P. R. China
| | - Kecheng Cao
- Electron Microscopy of Materials Science, Central Facility for Electron Microscopy Ulm University Albert-Einstein-Allee 11 89081 Ulm Germany
| | - Yin Tian
- School of Pharmacy Chengdu University of Traditional Chinese Medicine Chengdu 611137 P. R. China
| | - Yue Qi
- College of Chemistry Sichuan University Key Laboratory of Radiation Physics & Technology Ministry of Education No. 29 Wangjiang Road Chengdu 610064 P. R. China
| | - Shoujian Li
- College of Chemistry Sichuan University Key Laboratory of Radiation Physics & Technology Ministry of Education No. 29 Wangjiang Road Chengdu 610064 P. R. China
| | - Kun Li
- College of Chemistry Sichuan University Key Laboratory of Radiation Physics & Technology Ministry of Education No. 29 Wangjiang Road Chengdu 610064 P. R. China
| | - Xiaoqi Yu
- College of Chemistry Sichuan University Key Laboratory of Radiation Physics & Technology Ministry of Education No. 29 Wangjiang Road Chengdu 610064 P. R. China
| | - Lijian Ma
- College of Chemistry Sichuan University Key Laboratory of Radiation Physics & Technology Ministry of Education No. 29 Wangjiang Road Chengdu 610064 P. R. China
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45
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Clarke R, Hossain K, Cao K. Physiological roles of transverse lipid asymmetry of animal membranes. Biochimica et Biophysica Acta (BBA) - Biomembranes 2020; 1862:183382. [DOI: 10.1016/j.bbamem.2020.183382] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2020] [Revised: 06/01/2020] [Accepted: 06/02/2020] [Indexed: 02/07/2023]
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46
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Cao K, Biskupek J, Stoppiello CT, McSweeney RL, Chamberlain TW, Liu Z, Suenaga K, Skowron ST, Besley E, Khlobystov AN, Kaiser U. Atomic mechanism of metal crystal nucleus formation in a single-walled carbon nanotube. Nat Chem 2020; 12:921-928. [DOI: 10.1038/s41557-020-0538-9] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Accepted: 07/31/2020] [Indexed: 11/09/2022]
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47
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Balakrishna B, Menon A, Cao K, Gsänger S, Beil SB, Villalva J, Shyshov O, Martin O, Hirsch A, Meyer B, Kaiser U, Guldi DM, Delius M. Mechanische Verzahnung von einwandigen Kohlenstoffnanoröhren durch dynamisch‐kovalente Bildung von konkaven Disulfidmakrozyklen. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202005081] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Bugga Balakrishna
- Institut für Organische Chemie Universität Ulm Albert-Einstein-Allee 11 89081 Ulm Deutschland
| | - Arjun Menon
- Department Chemie und Pharmazie & Interdisziplinäres Zentrum für Molekulare Materialien Friedrich-Alexander-Universität Erlangen-Nürnberg Egerlandstrasse 3 91058 Erlangen Deutschland
| | - Kecheng Cao
- Elektronenmikroskopie der Materialwissenschaften Zentrale Einrichtung für Elektronenmikroskopie Universität Ulm Albert-Einstein-Allee 11 89081 Ulm Deutschland
| | - Sebastian Gsänger
- Interdisziplinäres Zentrum für Molekulare Materialien & Computer-Chemie-Zentrum (CCC) Friedrich-Alexander-Universität Erlangen-Nürnberg Nägelsbachstrasse 25 91052 Erlangen Deutschland
| | - Sebastian B. Beil
- Institut für Organische Chemie Universität Ulm Albert-Einstein-Allee 11 89081 Ulm Deutschland
| | - Julia Villalva
- Institut für Organische Chemie Universität Ulm Albert-Einstein-Allee 11 89081 Ulm Deutschland
| | - Oleksandr Shyshov
- Institut für Organische Chemie Universität Ulm Albert-Einstein-Allee 11 89081 Ulm Deutschland
| | - Oliver Martin
- Department Chemie und Pharmazie & Gemeinsames Institut für Angewandte Materialien und Prozesse (ZMP) Friedrich-Alexander-Universität Erlangen-Nürnberg Nikolaus-Fiebiger-Strasse 10 91058 Erlangen Deutschland
| | - Andreas Hirsch
- Department Chemie und Pharmazie & Gemeinsames Institut für Angewandte Materialien und Prozesse (ZMP) Friedrich-Alexander-Universität Erlangen-Nürnberg Nikolaus-Fiebiger-Strasse 10 91058 Erlangen Deutschland
| | - Bernd Meyer
- Interdisziplinäres Zentrum für Molekulare Materialien & Computer-Chemie-Zentrum (CCC) Friedrich-Alexander-Universität Erlangen-Nürnberg Nägelsbachstrasse 25 91052 Erlangen Deutschland
| | - Ute Kaiser
- Elektronenmikroskopie der Materialwissenschaften Zentrale Einrichtung für Elektronenmikroskopie Universität Ulm Albert-Einstein-Allee 11 89081 Ulm Deutschland
| | - Dirk M. Guldi
- Department Chemie und Pharmazie & Interdisziplinäres Zentrum für Molekulare Materialien Friedrich-Alexander-Universität Erlangen-Nürnberg Egerlandstrasse 3 91058 Erlangen Deutschland
| | - Max Delius
- Institut für Organische Chemie Universität Ulm Albert-Einstein-Allee 11 89081 Ulm Deutschland
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48
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Cao K, Skowron ST, Biskupek J, Stoppiello CT, Leist C, Besley E, Khlobystov AN, Kaiser U. Imaging an unsupported metal-metal bond in dirhenium molecules at the atomic scale. Sci Adv 2020; 6:eaay5849. [PMID: 32010771 PMCID: PMC6968940 DOI: 10.1126/sciadv.aay5849] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Accepted: 11/19/2019] [Indexed: 06/10/2023]
Abstract
Metallic bonds remain one of the most important and least understood of the chemical bonds. In this study, we generated Re2 molecules in which the Re-Re core is unsupported by ligands. Real-time imaging of the atomic-scale dynamics of Re2 adsorbed on a graphitic lattice allows direct measurement of Re-Re bond lengths for individual molecules that changes in discrete steps correlating with bond order from one to four. Direct imaging of the Re-Re bond breaking process reveals a new bonding state with the bond order less than one and a high-amplitude vibrational stretch, preceding the bond dissociation. The methodology, based on aberration-corrected transmission electron microscopy imaging, is shown to be a powerful analytical tool for the investigation of dynamics of metallic bonding at the atomic level.
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Affiliation(s)
- Kecheng Cao
- Central Facility for Materials Science Electron Microscopy, Ulm University, Albert-Einstein-Allee 11, Ulm 89081, Germany
| | - Stephen T. Skowron
- School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, UK
| | - Johannes Biskupek
- Central Facility for Materials Science Electron Microscopy, Ulm University, Albert-Einstein-Allee 11, Ulm 89081, Germany
| | - Craig T. Stoppiello
- School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, UK
| | - Christopher Leist
- Central Facility for Materials Science Electron Microscopy, Ulm University, Albert-Einstein-Allee 11, Ulm 89081, Germany
| | - Elena Besley
- School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, UK
| | - Andrei N. Khlobystov
- School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, UK
| | - Ute Kaiser
- Central Facility for Materials Science Electron Microscopy, Ulm University, Albert-Einstein-Allee 11, Ulm 89081, Germany
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49
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Liu R, Cao K, Clark AH, Lu P, Anjass M, Biskupek J, Kaiser U, Zhang G, Streb C. Top-down synthesis of polyoxometalate-like sub-nanometer molybdenum-oxo clusters as high-performance electrocatalysts. Chem Sci 2019; 11:1043-1051. [PMID: 34084360 PMCID: PMC8146420 DOI: 10.1039/c9sc05469c] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Accepted: 12/04/2019] [Indexed: 12/13/2022] Open
Abstract
The top-down fabrication of catalytically active molecular metal oxide anions, or polyoxometalates, is virtually unexplored, although these materials offer unique possibilities, for catalysis, energy conversion and storage. Here, we report a novel top-down route, which enables the scalable synthesis and deposition of sub-nanometer molybdenum-oxo clusters on electrically conductive mesoporous carbon. The new approach uses a unique redox-cycling process to convert crystalline MoIVO2 particles into sub-nanometer molecular molybdenum-oxo clusters with a nuclearity of ∼1-20. The resulting molybdenum-oxo cluster/carbon composite shows outstanding, stable electrocatalytic performance for the oxygen reduction reaction with catalyst characteristics comparable to those of commercial Pt/C. This new material design could give access to a new class of highly reactive polyoxometalate-like metal oxo clusters as high-performance, earth abundant (electro-)catalysts.
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Affiliation(s)
- Rongji Liu
- Institute of Inorganic Chemistry I, Ulm University Albert-Einstein-Allee 11 89081 Ulm Germany
- CAS Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences 100190 Beijing China
| | - Kecheng Cao
- Central Facility of Electron Microscopy for Materials Science, Ulm University Albert-Einstein-Allee 11 89081 Ulm Germany
| | - Adam H Clark
- Paul Scherrer Institut Forschungsstrasse 111 Villigen CH-5232 Switzerland
| | - Peilong Lu
- CAS Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences 100190 Beijing China
- University of Chinese Academy of Sciences 100049 Beijing China
| | - Montaha Anjass
- Institute of Inorganic Chemistry I, Ulm University Albert-Einstein-Allee 11 89081 Ulm Germany
- Helmholtz-Institute Ulm, Electrochemical Energy Storage Helmholtzstr. 11 89081 Ulm Germany
| | - Johannes Biskupek
- Central Facility of Electron Microscopy for Materials Science, Ulm University Albert-Einstein-Allee 11 89081 Ulm Germany
| | - Ute Kaiser
- Central Facility of Electron Microscopy for Materials Science, Ulm University Albert-Einstein-Allee 11 89081 Ulm Germany
- Helmholtz-Institute Ulm, Electrochemical Energy Storage Helmholtzstr. 11 89081 Ulm Germany
| | - Guangjin Zhang
- CAS Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences 100190 Beijing China
| | - Carsten Streb
- Institute of Inorganic Chemistry I, Ulm University Albert-Einstein-Allee 11 89081 Ulm Germany
- Helmholtz-Institute Ulm, Electrochemical Energy Storage Helmholtzstr. 11 89081 Ulm Germany
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50
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Xing X, Liu R, Cao K, Kaiser U, Streb C. Transition-Metal Oxides/Carbides@Carbon Nanotube Composites as Multifunctional Electrocatalysts for Challenging Oxidations and Reductions. Chemistry 2019; 25:11098-11104. [PMID: 31106936 DOI: 10.1002/chem.201901400] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Revised: 05/18/2019] [Indexed: 01/05/2023]
Abstract
The rapid development of renewable-energy technologies such as water splitting, rechargeable metal-air batteries, and fuel cells requires highly efficient electrocatalysts capable of the oxygen-reduction reaction (ORR) and the oxygen-evolution reaction (OER). Herein, we report a facile sonication-driven synthesis to deposit the molecular manganese vanadium oxide precursor [Mn4 V4 O17 (OAc)3 ]3- on multiwalled carbon nanotubes (MWCNTs). Thermal conversion of this composite at 900 °C gives nanostructured manganese vanadium oxides/carbides, which are stably linked to the MWCNTs. The resulting composites show excellent electrochemical reactivity for ORR and OER, and significant reactivity enhancements compared with the precursors and a Pt/C reference are reported. Notably, even under harsh acidic conditions, long-term OER activity at low overpotential is reported. In addition, we report exceptional activity of the composites for the industrially important Cl2 evolution from an aqueous HCl electrolyte. The new composite material shows how molecular deposition routes leading to highly active and stable multifunctional electrocatalysts can be developed. The facile design could in principle be extended to multiple catalyst classes by tuning of the molecular metal oxide precursor employed.
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Affiliation(s)
- Xiaolin Xing
- Institute of Inorganic Chemistry I, Ulm University, Ulm, 89081, Germany
| | - Rongji Liu
- Institute of Inorganic Chemistry I, Ulm University, Ulm, 89081, Germany.,Institute of Process Engineering, Key Laboratory of Green Process and Engineering, Chinese Academy of Sciences, Beijing, 100190, China
| | - Kecheng Cao
- Central Facility of Electron Microscopy for Materials Science, Ulm University, Ulm, 89081, Germany
| | - Ute Kaiser
- Central Facility of Electron Microscopy for Materials Science, Ulm University, Ulm, 89081, Germany
| | - Carsten Streb
- Institute of Inorganic Chemistry I, Ulm University, Ulm, 89081, Germany.,Helmholtz-Institute Ulm for Electrochemical Energy Conversion, Ulm, 89081, Germany
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