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Cheng Y, Wang H, Jiang TW, Guo X, Kwofie F, Su H, Khotseng L, Zeng W, Zhang Y, Liu Y, Cai WB, Wang S. Lutetium-Induced Ultrafine PtRu Nanoclusters with a High Electrochemical Surface Area for Direct Methanol Fuel Cells at Alleviated Temperatures. ACS Appl Mater Interfaces 2024. [PMID: 38606549 DOI: 10.1021/acsami.3c17927] [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: 04/13/2024]
Abstract
PtRu alloys have been recognized as the state-of-the-art catalysts for the methanol oxidation reaction (MOR) in direct methanol fuel cells (DMFCs). However, their applications in DMFCs are still less efficient in terms of both catalytic activity and durability. Rare earth (RE) metals have been recognized as attractive elements to tune the catalytic activity, while it is still a world-class challenge to synthesize well-dispersed Pt-RE alloys. Herein, we developed a novel hydrogen-assisted magnesiothermic reduction strategy to prepare a highly dispersed carbon-supported lutetium-doped PtRu catalyst with ultrafine nanoclusters and atomically dispersed Ru sites. The PtRuLu catalyst shows an outstanding high electrochemical surface area (ECSA) of 239.0 m2 gPt-1 and delivers an optimized MOR mass activity and specific activity of 632.5 mA mgPt-1 and 26 A cmPt-2 at 0.4 V vs saturated calomel electrode (SCE), which are 3.6 and 3.5 times of commercial PtRu-JM and an order higher than PtLu, respectively. These novel catalysts have been demonstrated in a high-temperature direct methanol fuel cell running in a temperature range of 180-240 °C, achieving a maximum power density of 314.3 mW cm-2. The AC-STEM imaging, in situ ATR-IR spectroscopy, and DFT calculations disclose that the high performance is resulted from the highly dispersed PtRuLu nanoclusters and the synergistic effect of the atomically dispersed Ru sites with PtRuLu nanoclusters, which significantly reduces the CO* intermediates coverage due to the promoted water activation to form the OH* to facilitate the CO* removal.
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Affiliation(s)
- Yi Cheng
- Hunan Provincial Key Laboratory of Nonferrous Value-added Metallurgy, Central South University, Changsha 410083, China
- Engineering Research Center of the Ministry of Education for Advanced Battery Materials, Central South University, Changsha 410083, China
| | - Huiping Wang
- Hunan Provincial Key Laboratory of Nonferrous Value-added Metallurgy, Central South University, Changsha 410083, China
- Engineering Research Center of the Ministry of Education for Advanced Battery Materials, Central South University, Changsha 410083, China
| | - Tian-Wen Jiang
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200438, China
| | - Xinyao Guo
- School of Photovoltaic and Renewable Energy Engineering, University of New South Wales, Sydney, New South Wales 2052, Australia
| | - Felix Kwofie
- Hunan Provincial Key Laboratory of Nonferrous Value-added Metallurgy, Central South University, Changsha 410083, China
- Engineering Research Center of the Ministry of Education for Advanced Battery Materials, Central South University, Changsha 410083, China
| | - Huaneng Su
- Institute for Energy Research, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, PR China
| | - Lindiwe Khotseng
- Department of Chemistry, University of the Western Cape, Robert Sobukwe Road, Cape Town 7535, South Africa
| | - Weifeng Zeng
- Hunan Provincial Key Laboratory of Nonferrous Value-added Metallurgy, Central South University, Changsha 410083, China
- Engineering Research Center of the Ministry of Education for Advanced Battery Materials, Central South University, Changsha 410083, China
| | - Ying Zhang
- National Engineering Research Centre of Green Recycling for Strategic Metal Resources, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Yujing Liu
- Institute of Metals, College of Material Science and Engineering, Changsha University of Science & Technology, 960, Second Section, Wanjiali RD (S), Changsha, Hunan 410004, China
| | - Wen-Bin Cai
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200438, China
| | - Shuangyin Wang
- State Key Laboratory of Chem/Bio-Sensing and Chemometrics, Provincial Hunan Key Laboratory for Graphene Materials and Devices, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
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Wei Y, Mao Z, Jiang TW, Li H, Ma XY, Zhan C, Cai WB. Uncovering Photoelectronic and Photothermal Effects in Plasmon-Mediated Electrocatalytic CO 2 Reduction. Angew Chem Int Ed Engl 2024; 63:e202317740. [PMID: 38318927 DOI: 10.1002/anie.202317740] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 01/20/2024] [Accepted: 02/05/2024] [Indexed: 02/07/2024]
Abstract
Plasmon-mediated electrocatalysis that rests on the ability of coupling localized surface plasmon resonance (LSPR) and electrochemical activation, emerges as an intriguing and booming area. However, its development seriously suffers from the entanglement between the photoelectronic and photothermal effects induced by the decay of plasmons, especially under the influence of applied potential. Herein, using LSPR-mediated CO2 reduction on Ag electrocatalyst as a model system, we quantitatively uncover the dominant photoelectronic effect on CO2 reduction reaction over a wide potential window, in contrast to the leading photothermal effect on H2 evolution reaction at relatively negative potentials. The excitation of LSPR selectively enhances the CO faradaic efficiency (17-fold at -0.6 VRHE ) and partial current density (100-fold at -0.6 VRHE ), suppressing the undesired H2 faradaic efficiency. Furthermore, in situ attenuated total reflection-surface enhanced infrared absorption spectroscopy (ATR-SEIRAS) reveals a plasmon-promoted formation of the bridge-bonded CO on Ag surface via a carbonyl-containing C1 intermediate. The present work demonstrates a deep mechanistic understanding of selective regulation of interfacial reactions by coupling plasmons and electrochemistry.
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Affiliation(s)
- Yan Wei
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Department of Chemistry, Fudan University, Shanghai, 200438, China
| | - Zijie Mao
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Department of Chemistry, Fudan University, Shanghai, 200438, China
| | - Tian-Wen Jiang
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Department of Chemistry, Fudan University, Shanghai, 200438, China
| | - Hong Li
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Department of Chemistry, Fudan University, Shanghai, 200438, China
| | - Xian-Yin Ma
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Department of Chemistry, Fudan University, Shanghai, 200438, China
| | - Chao Zhan
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Wen-Bin Cai
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Department of Chemistry, Fudan University, Shanghai, 200438, China
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Wan S, Zhang H, Ye K, Li J, He Y, Ge X, Xu T, Cai WB, Lin M, Jiang K. Improving the Efficiencies of Water Splitting and CO 2 Electrolysis by Anodic O 2 Bubble Management. J Phys Chem Lett 2023:11217-11223. [PMID: 38055915 DOI: 10.1021/acs.jpclett.3c02902] [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: 12/08/2023]
Abstract
This study systematically explores the impact of the anodic flow field design on the transport of O2 bubble and subsequent energy efficiency in electrolysis devices. Two distinct configurations, namely a conventional serpentine flow panel and an interdigitated flow panel, are integrated at the anode side of the electrolyzer. The interdigitated flow field exhibits superior performance in both alkaline water splitting and CO2 reduction despite the experience of an increased pressure drop. Numerical simulations reveal that the enhanced convective flow of the O2 bubbles induced by a forced anolyte flow through the porous electrode within the interdigitated panel design resulted in a 3 orders of magnitude increase in the level of the O2 bubble transport compared to the serpentine configuration. These findings not only underscore the significance of flow field design on bubble management but also provide a basis for advancing the electrolysis efficiency at industrial-level current densities.
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Affiliation(s)
- Shusheng Wan
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200438, China
| | - Huanlei Zhang
- Department of Mechanical and Energy Engineering, SUSTech Energy Institute for Carbon Neutrality, Southern University of Science and Technology, Shenzhen 518055, China
| | - Ke Ye
- Interdisciplinary Research Center, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Jieyang Li
- Department of Mechanical and Energy Engineering, SUSTech Energy Institute for Carbon Neutrality, Southern University of Science and Technology, Shenzhen 518055, China
| | - Yucheng He
- Interdisciplinary Research Center, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Xiaolin Ge
- Key Laboratory of Precision and Intelligent Chemistry, Collaborative Innovation Centre of Chemistry for Energy Materials, School of Chemistry and Material Science, University of Science and Technology of China, Hefei 230026, China
| | - Tongwen Xu
- Key Laboratory of Precision and Intelligent Chemistry, Collaborative Innovation Centre of Chemistry for Energy Materials, School of Chemistry and Material Science, University of Science and Technology of China, Hefei 230026, China
| | - Wen-Bin Cai
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200438, China
| | - Meng Lin
- Department of Mechanical and Energy Engineering, SUSTech Energy Institute for Carbon Neutrality, Southern University of Science and Technology, Shenzhen 518055, China
| | - Kun Jiang
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200438, China
- Interdisciplinary Research Center, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
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Pang L, Zhao Z, Ma XY, Cai WB, Guo L, Dong S, Liu C, Peng Z. Hyphenated DEMS and ATR-SEIRAS techniques for in situ multidimensional analysis of lithium-ion batteries and beyond. J Chem Phys 2023; 158:2887629. [PMID: 37125721 DOI: 10.1063/5.0144635] [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] [Received: 01/31/2023] [Accepted: 04/17/2023] [Indexed: 05/02/2023] Open
Abstract
A wide spectrum of state-of-the-art characterization techniques have been devised to monitor the electrode-electrolyte interface that dictates the performance of electrochemical devices. However, coupling multiple characterization techniques to realize in situ multidimensional analysis of electrochemical interfaces remains a challenge. Herein, we presented a hyphenated differential electrochemical mass spectrometry and attenuated total reflection surface enhanced infrared absorption spectroscopy analytical method via a specially designed electrochemical cell that enables a simultaneous detection of deposited and volatile interface species under electrochemical reaction conditions, especially suitable for non-aqueous, electrolyte-based energy devices. As a proof of concept, we demonstrated the capability of the homemade setup and obtained the valuable reaction mechanisms, by taking the tantalizing reactions in non-aqueous lithium-ion batteries (i.e., oxidation and reduction processes of carbonate-based electrolytes on Li1+xNi0.8Mn0.1Co0.1O2 and graphite surfaces) and lithium-oxygen batteries (i.e., reversibility of the oxygen reaction) as model reactions. Overall, we believe that the coupled and complementary techniques reported here will provide important insights into the interfacial electrochemistry of energy storage materials (i.e., in situ, multi-dimensional information in one single experiment) and generate much interest in the electrochemistry community and beyond.
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Affiliation(s)
- Long Pang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Science, Changchun 130022, China
- University of Science and Technology of China, Hefei 230026, China
| | - Zhiwei Zhao
- Laboratory of Advanced Spectroelectrochemistry and Li-ion Batteries, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Xian-Yin Ma
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200438, China
| | - Wen-Bin Cai
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200438, China
| | - Limin Guo
- College of Environment and Chemical Engineering, Dalian University, Dalian 116622, China
| | - Shaojun Dong
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Science, Changchun 130022, China
- University of Science and Technology of China, Hefei 230026, China
| | - Chuntai Liu
- Key Laboratory of Materials Processing and Mold (Zhengzhou University), Ministry of Education, National Engineering Research Center for Advanced Polymer Processing Technology, Zhengzhou University, Zhengzhou 450002, China
| | - Zhangquan Peng
- Laboratory of Advanced Spectroelectrochemistry and Li-ion Batteries, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
- School of Applied Physics and Materials, Wuyi University, Jiangmen 529020, China
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Wei Y, Mao Z, Ma XY, Zhan C, Cai WB. Plasmon-Enhanced C-C Bond Cleavage toward Efficient Ethanol Electrooxidation. J Phys Chem Lett 2022; 13:11288-11294. [PMID: 36449387 DOI: 10.1021/acs.jpclett.2c03292] [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: 06/17/2023]
Abstract
Ethanol, as a sustainable biomass fuel, is endowed with the merits of theoretically high energy density and environmental friendliness yet suffers from sluggish kinetics and low selectivity toward the desired complete electrooxidation (C1 pathway). Here, the localized surface plasmon resonance (LSPR) effect is explored as a manipulating knob to boost electrocatalytic ethanol oxidation reaction in alkaline media under ambient conditions by appropriate visible light. Under illumination, Au@Pt nanoparticles with plasmonic core and active shell exhibit concurrently higher activity (from 2.30 to 4.05 A mgPt-1 at 0.8 V vs RHE) and C1 selectivity (from 9 to 38% at 0.8 V). In situ attenuated total reflection-surface enhanced infrared absorption spectroscopy (ATR-SEIRAS) provides a molecular level insight into the LSPR promoted C-C bond cleavage and the subsequent CO oxidation. This work not only extends the methodology hyphenating plasmonic electrocatalysis and in situ surface IR spectroscopy but also presents a promising approach for tuning complex reaction pathways.
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Affiliation(s)
- Yan Wei
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200438, China
| | - Zijie Mao
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200438, China
| | - Xian-Yin Ma
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200438, China
| | - Chao Zhan
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Wen-Bin Cai
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200438, China
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Li H, Qin X, Zhang XG, Jiang K, Cai WB. Boron-Doped Platinum-Group Metals in Electrocatalysis: A Perspective. ACS Catal 2022. [DOI: 10.1021/acscatal.2c04358] [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: 11/30/2022]
Affiliation(s)
- Hong Li
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai200438, People’s Republic of China
| | - Xianxian Qin
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai200438, People’s Republic of China
| | - Xia-Guang Zhang
- Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, College of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang453007, People’s Republic of China
| | - Kun Jiang
- Interdisciplinary Science Research Center, Institute of Fuel Cells, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai200240, People’s Republic of China
| | - Wen-Bin Cai
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai200438, People’s Republic of China
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Mao Z, Wu Y, Ma XY, Zheng L, Zhang XG, Cai WB. In Situ Wide-Frequency Surface-Enhanced Infrared Absorption Spectroscopy Enables One to Decipher the Interfacial Structure of a Cu Plating Additive. J Phys Chem Lett 2022; 13:9079-9084. [PMID: 36154129 DOI: 10.1021/acs.jpclett.2c02541] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
In situ spectroscopic characterization of the interfacial structure of an organic additive at a Cu electrode is essential for a mechanistic understanding of Cu superfilling at the molecular level. In this work, we demonstrate wide-frequency attenuated total reflection surface-enhanced infrared absorption spectroscopy (wf-ATR-SEIRAS) to elucidate the dissociative adsorption of bis(sodium sulfopropyl)-disulfide (a typical accelerator) on a Cu electrode in conjunction with the electrochemical quartz crystal microbalance measurement and modeling calculations. The wf-ATR-SEIRAS clearly identifies the peaks featuring the sulfonate and methylene groups as well as the C-Ssulfonate and C-Sthiol vibrations of the adsorbate. Analysis of relative peak intensities from 1100 to 650 cm-1 reveals a more tilted alkyl chain axis for the thiolate on Cu than that on Au, which is supported by comparative density functional theory calculations. This work opens a new avenue for the wf-ATR-SEIRAS to study interfacial structures of electroplating additives related to advanced microelectronics manufacture.
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Affiliation(s)
- Zijie Mao
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200438, China
| | - Yicai Wu
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200438, China
| | - Xian-Yin Ma
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200438, China
| | - Li Zheng
- Huawei Technologies Co., Ltd., Shenzhen 518129, China
| | - Xia-Guang Zhang
- Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, College of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China
| | - Wen-Bin Cai
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200438, China
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Ma XY, Zhang WY, Ye K, Jiang K, Cai WB. Electrolyte-Layer-Tunable ATR-SEIRAS for Simultaneous Detection of Adsorbed and Dissolved Species in Electrochemistry. Anal Chem 2022; 94:11337-11344. [PMID: 35930311 DOI: 10.1021/acs.analchem.2c02092] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A balanced detection of both adsorbates and dissolved species is very important for the clarification of the electrochemical reaction mechanism yet remains a major challenge for different modes of electrochemical infrared (IR) spectroscopy. Among others, conventional attenuated total reflection-surface-enhanced IR absorption spectroscopy (ATR-SEIRAS) is far less sensitive to low-concentration solution species than to surface species. We report herein an electrochemical wide-frequency ATR-SEIRAS with a novel thin-layer flow cell design, fulfilling the simultaneous detection of the variations of surface and solution species. This setup consists of a silicon wafer (with one side micromachined and the other side metallized), a thin-layer electrolyte structure with tunable thickness and flow rate, and a tilt-correction system based on laser collimation, enabling a well-controlled mass transport within the electrolyte layer and the spectral differentiation of solution species from adsorbates. Using acidic methanol oxidation on a Pt film electrode as a model system, besides SEIRA bands for adsorbed CO and formate intermediates, IR spectral signals for dissolved products CO2, formic acid, and methyl formate can be readily identified for a quiescent electrolyte layer of ∼20 μm, which are otherwise undetected with conventional ATR-SEIRAS, as indicated by the trend of spectral features with increasing thickness or flow rate.
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Affiliation(s)
- Xian-Yin Ma
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200438, China
| | - Wei-Yi Zhang
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200438, China
| | - Ke Ye
- Interdisciplinary Research Center, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Kun Jiang
- Interdisciplinary Research Center, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Wen-Bin Cai
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200438, China
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Wang X, Wan X, Qin X, Chen C, Qian X, Guo Y, Xu Q, Cai WB, Yang H, Jiang K. Electronic Structure Modulation of RuO 2 by TiO 2 Enriched with Oxygen Vacancies to Boost Acidic O 2 Evolution. ACS Catal 2022. [DOI: 10.1021/acscatal.2c01944] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xiaojun Wang
- Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power, College of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai 200090, China
- Interdisciplinary Research Center, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Xuhao Wan
- School of Electrical Engineering and Automation, Wuhan University, Wuhan 430072, Hubei, China
| | - Xianxian Qin
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200438, China
| | - Chi Chen
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
| | - Xiaoshi Qian
- Interdisciplinary Research Center, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Yuzheng Guo
- School of Electrical Engineering and Automation, Wuhan University, Wuhan 430072, Hubei, China
| | - Qunjie Xu
- Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power, College of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai 200090, China
| | - Wen-Bin Cai
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200438, China
| | - Hui Yang
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
| | - Kun Jiang
- Interdisciplinary Research Center, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
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Mao Z, Ding C, Liu X, Zhang Q, Qin X, Li H, Yang F, Li Q, Zhang XG, Zhang J, Cai WB. Interstitial B-Doping in Pt Lattice to Upgrade Oxygen Electroreduction Performance. ACS Catal 2022. [DOI: 10.1021/acscatal.2c01052] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Zijie Mao
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200438, China
| | - Chen Ding
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200438, China
| | - Xuan Liu
- State Key Laboratory of Material Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China
| | - Qing Zhang
- School of Physical Science and Technology, Shanghai Tech University, Shanghai 201210, China
| | - Xianxian Qin
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200438, China
| | - Hong Li
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200438, China
| | - Fan Yang
- School of Physical Science and Technology, Shanghai Tech University, Shanghai 201210, China
| | - Qing Li
- State Key Laboratory of Material Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China
| | - Xia-Guang Zhang
- Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, College of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Junliang Zhang
- Institute of Fuel Cells, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Wen-Bin Cai
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200438, China
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Cai WB, Wang Y, Wang J, Guo WG, Duan YY, Zhang L. Preliminary study of carotid variables under ultrasound analysis as predictors for the risk of coronary arterial atherosclerosis. Echocardiography 2022; 39:1054-1063. [PMID: 35781700 PMCID: PMC9544001 DOI: 10.1111/echo.15404] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Revised: 05/13/2022] [Accepted: 05/30/2022] [Indexed: 12/01/2022] Open
Abstract
Background Carotid atherosclerosis by ultrasound scanning can be considered as an ideal window to reflect systemic artery atherosclerosis, which has aroused wide concern for predicting the severity of coronary artery atherosclerosis clinically. Ultrasound radio frequency (RF) data technology has enabled us to evaluate the carotid structure and elastic function precisely, for predicting the severity of coronary artery atherosclerosis. Methods Patients with suspected coronary artery disease (CAD) underwent coronary angiography and were assigned to four groups according to whether atherosclerotic plaque was found or not and it caused stenosis. Carotid artery intima‐media thickness (IMT) and arterial stiffness were investigated by quality intima‐media thickness (QIMT) and quality arterial stiffness (QAS) techniques during ultrasound scanning. Univariable and multivariable modeling were used to investigate correlations of carotid parameters to coronary artery atherosclerosis. Receive operating characteristic (ROC) curves were used to evaluate diagnostic performance of these ultrasound variables. Results Carotid IMT and stiffness variables pulse wave velocity (PWV), α, β and compliance coefficient (CC) were statistically different between every two‐group's comparisons. IMT correlated with stiffness variables significantly with r = 0.70, 0.77, 0.63, and −0.39, respectively. All variables correlated with the severity of coronary atherosclerosis with the odd ratio (OR) of 1.73, 1.67, 1.19, 1.23, and 0.56 accordingly as IMT, PWV, α, β and CC were concerned. The AUC of IMT, PWV, α, β and CC were 0.9257, 0.8910, 0.8016, 0.9383, 0.8581 with correctly classified rate of 88.16%, 83.77%, 78.07%, 86.84%, and 81.58%, respectively. Conclusions Carotid artery IMT and stiffness variable PWV, α, β and CC presented favorable predicting and differentiating values for patients with coronary atherosclerosis of different severity.
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Affiliation(s)
- Wen-Bin Cai
- Department of Ultrasound Diagnostics, Tangdu Hospital, The Fourth Military Medical University, Xi'an, China.,Department of Ultrasound Diagnostics, General Hospital of Tibet Military Region, Lhasa, China
| | - Yi Wang
- Department of Ultrasound Diagnostics, Tangdu Hospital, The Fourth Military Medical University, Xi'an, China.,Disease Surveillance Division, Jiangsu International Travel Healthcare Center, Nanjing, China
| | - Jia Wang
- Department of Ultrasound Diagnostics, Tangdu Hospital, The Fourth Military Medical University, Xi'an, China
| | - Wan-Gang Guo
- Department of Cardiology, Tangdu Hospital, the Fourth Military Medical University, Xi'an, China
| | - Yun-You Duan
- Department of Ultrasound Diagnostics, Tangdu Hospital, The Fourth Military Medical University, Xi'an, China
| | - Li Zhang
- Department of Ultrasound Diagnostics, Tangdu Hospital, The Fourth Military Medical University, Xi'an, China
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12
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Cai WB, Yin JK, Li QY, Yang YL, Duan YY, Zhang L. The severity of portal hypertension by a non-invasive assessment: acoustic structure quantification analysis of liver parenchyma. BMC Med Imaging 2022; 22:85. [PMID: 35550032 PMCID: PMC9097305 DOI: 10.1186/s12880-022-00817-2] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Accepted: 05/05/2022] [Indexed: 11/30/2022] Open
Abstract
Background Acoustic structure quantification (ASQ) has been applied to evaluate liver histologic changes by analyzing the speckle pattern seen on B-mode ultrasound. We aimed to assess the severity of portal hypertension (PHT) through hepatic ultrasonography. Methods Sixty patients diagnosed with PHT and underwent surgical treatment with portosystemic shunts were enrolled. Portal pressure (PP) was measured intraoperatively. Patients were divided into subgroups according to the severity of gastroesophageal varices and Child–Pugh class. Three difference ratio (Cm2) values on ASQ histogram mode were analyzed for their relationships with PP, degree of gastroesophageal varices and Child–Pugh liver function. Thirty healthy volunteers matched with the patients for gender and age were enrolled as controls. Comparisons among groups and correlation of the parameters with PP were analyzed. Area under the receive operating characteristic curve was used to evaluate the predicting value of ASQ parameters. Results In the patients, the ASQ parameters peak Cm2 (Cm2max), mean Cm2 (Cm2mean) and the highest occurred Cm2 value of the obtained red curve (RmaxCm2) were all greatly increased (P < 0.0001, P < 0.0001, P = 0.027). Multiple comparisons indicated that, regardless of Child–Pugh class and degree of gastroesophageal varices, the patients had significantly increased Cm2max and Cm2mean compared with the controls (all P < 0.0001). No differences among subgroups were observed. Cm2max was significantly statistically correlated with PP (r = 0.3505, P < 0.01), degree of varices (r = 0.4998, P < 0.0001). Youden’s index for Cm2max with a cut-off value of 140.3 for predicting the presence of PHT, gastroesophageal varices and liver function equal to or worse than Child–Pugh class B were 0.8, 0.91 and 0.84, respectively. Conclusions ASQ analysis of ultrasonographic images may have a role in the evaluation of the severity of PHT by detecting liver histologic changes in the speckle pattern caused by cirrhosis. Supplementary Information The online version contains supplementary material available at 10.1186/s12880-022-00817-2.
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Affiliation(s)
- Wen-Bin Cai
- Department of Ultrasound Diagnosis, Tangdu Hospital, The Fourth Military Medical University, Xin Si Road, Ba Qiao District, Xi'an, China.,Department of Ultrasound Diagnostics, General Hospital of Tibet Military Region, Lhasa, China
| | - Ji-Kai Yin
- Department of General Surgery, Tangdu Hospital, The Fourth Military Medical University, Xi'an, China
| | - Qiao-Ying Li
- Department of Ultrasound Diagnosis, Tangdu Hospital, The Fourth Military Medical University, Xin Si Road, Ba Qiao District, Xi'an, China
| | - Yi-Lin Yang
- Department of Ultrasound Diagnosis, Tangdu Hospital, The Fourth Military Medical University, Xin Si Road, Ba Qiao District, Xi'an, China
| | - Yun-You Duan
- Department of Ultrasound Diagnosis, Tangdu Hospital, The Fourth Military Medical University, Xin Si Road, Ba Qiao District, Xi'an, China
| | - Li Zhang
- Department of Ultrasound Diagnosis, Tangdu Hospital, The Fourth Military Medical University, Xin Si Road, Ba Qiao District, Xi'an, China.
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13
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Liu YX, Zhang WY, Han GK, Zhou YW, Li LF, Kang C, Kong FP, Gao YZ, Du CY, Wang JJ, Ma YL, Du L, Cai WB, Yin GP. Deactivation and regeneration of a benchmark Pt/C catalyst toward oxygen reduction reaction in the presence of poisonous SO 2 and NO. Catal Sci Technol 2022. [DOI: 10.1039/d2cy00141a] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Adsorbed SO2 on Pt sites can be substituted by NO; adsorbed NO can be completely reduced to NH4+ and removed in a reduction potential range.
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Affiliation(s)
- Yu-Xin Liu
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, 92 West Dazhi St., Harbin 150001, China
| | - Wei-Yi Zhang
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai, 200438, China
| | - Guo-Kang Han
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, 92 West Dazhi St., Harbin 150001, China
| | - Ya-Wei Zhou
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai, 200438, China
| | - Ling-Feng Li
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, 92 West Dazhi St., Harbin 150001, China
| | - Cong Kang
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, 92 West Dazhi St., Harbin 150001, China
| | - Fan-Peng Kong
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, 92 West Dazhi St., Harbin 150001, China
| | - Yun-Zhi Gao
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, 92 West Dazhi St., Harbin 150001, China
| | - Chun-Yu Du
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, 92 West Dazhi St., Harbin 150001, China
| | - Jia-Jun Wang
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, 92 West Dazhi St., Harbin 150001, China
| | - Yu-Lin Ma
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, 92 West Dazhi St., Harbin 150001, China
| | - Lei Du
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, 92 West Dazhi St., Harbin 150001, China
| | - Wen-Bin Cai
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai, 200438, China
| | - Ge-Ping Yin
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, 92 West Dazhi St., Harbin 150001, China
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14
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Wu J, Li J, Li Y, Ma XY, Zhang WY, Hao Y, Cai WB, Liu Z, Gong M. Steering the Glycerol Electro-Reforming Selectivity via Cation-Intermediate Interactions. Angew Chem Int Ed Engl 2021; 61:e202113362. [PMID: 34957665 DOI: 10.1002/anie.202113362] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [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: 10/02/2021] [Indexed: 11/11/2022]
Abstract
Electro-reforming of renewable biomass resources is an alternative technology for sustainable pure H2 production. Herein, we discovered an unconventional cation effect on the concurrent formate and H2 production via glycerol electro-reforming. In stark contrast to the cation effect via forming the double layers in cathodic reactions, the presence of residual cations at the anode were discovered to interact with the glycerol oxidation intermediates to steer its product selectivity. Through a combination of product analysis, transient kinetics, crown ether trapping experiments, in situ IRRAS spectroscopy and DFT calculation, the aldehyde intermediates were discovered to be stabilized by the Li+ cations to favor the non-oxidative C-C cleavage for formate production. The maximal formate efficiency could reach 81.3% under ~ 60 mA/cm2 in LiOH. This work emphasizes the significance of engineering the microenvironment at the electrode-electrolyte interface for efficient electrolytic processes.
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Affiliation(s)
- Jianxiang Wu
- Fudan University, Department of Chemistry, CHINA
| | - Jili Li
- Fudan University, Department of Chemistry, CHINA
| | - Yefei Li
- Fudan University, Department of Chemistry, CHINA
| | - Xian-Yin Ma
- Fudan University, Department of Chemistry, CHINA
| | - Wei-Yi Zhang
- Fudan University, Department of Chemistry, CHINA
| | - Yaming Hao
- Fudan University, Department of Chemistry, CHINA
| | - Wen-Bin Cai
- Fudan University, Department of Chemistry, CHINA
| | - Zhipan Liu
- Fudan University, Department of Chemistry, CHINA
| | - Ming Gong
- Fudan University, Chemistry, No.2005, Songhu Rd., 200438, Shanghai, CHINA
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15
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Jiang K, Ma XY, Back S, Zhao J, Jiang F, Qin X, Zhang J, Cai WB. Local Coordination and Reactivity of a Pt Single-Atom Catalyst as Probed by Spectroelectrochemical and Computational Approaches. CCS Chem 2021. [DOI: 10.31635/ccschem.020.202000667] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Affiliation(s)
- Kun Jiang
- Institute of Fuel Cells, Interdisciplinary Research Center, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240
| | - Xian-Yin Ma
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200438
| | - Seoin Back
- Department of Chemical and Biomolecular Engineering, Sogang University, Seoul 04107
| | - Jiajun Zhao
- Institute of Fuel Cells, Interdisciplinary Research Center, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240
| | - Fangling Jiang
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201899
| | - Xianxian Qin
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200438
| | - Junliang Zhang
- Institute of Fuel Cells, Interdisciplinary Research Center, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240
| | - Wen-Bin Cai
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200438
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16
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Wei RL, Liu Y, Chen Z, Jia WS, Yang YY, Cai WB. Ammonia oxidation on iridium electrode in alkaline media: An in situ ATR-SEIRAS study. J Electroanal Chem (Lausanne) 2021. [DOI: 10.1016/j.jelechem.2021.115254] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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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17
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Cai WB, Zhao YJ, Liu L, Cheng Q, Wang J, Shi XL, Yao L, Qiao XH, Zhu Y, Chen C, Zhang X. Redox environment metabolomic evaluation (REME) of the heart after myocardial ischemia/reperfusion injury. Free Radic Biol Med 2021; 173:7-18. [PMID: 34252540 DOI: 10.1016/j.freeradbiomed.2021.06.033] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 06/28/2021] [Accepted: 06/29/2021] [Indexed: 01/22/2023]
Abstract
Myocardial ischemia/reperfusion injury (MIRI) is closely related to oxidative stress. However, the redox environment of the heart has not been evaluated thoroughly after MIRI, which limits precise redox intervention. In this study, we developed the redox environment metabolomic evaluation (REME) method to analyze the redox metabolites of the heart after MIRI. Based on the targeted metabolomics strategy, we established a detection panel for 22 redox-related molecules, including the major redox couples nicotinamide adenine dinucleotide (NADH/NAD+), nicotinamide adenine dinucleotide phosphate (NADPH/NADP+), and glutathione/glutathione disulfide (GSH/GSSG), reactive oxygen and nitrogen species-related molecules, and some lipid peroxidation products. The high sensitivity and specificity of the method make it suitable for evaluating the endogenous redox environment. The REME method showed that the heart tissue in a MIRI mouse model had a different redox profile from that in the control group. Different redox species changed in different ways. The ratios of GSSG/GSH and NADP+/NADPH increased, but the levels of both NAD+ and NADH decreased in the risk area of the infarcted heart after reperfusion. In addition, some reactive nitrogen species-related metabolites (tetrahydrobiopterin, arginine, and S-nitrosoglutathione) decreased and some lipid peroxides (4-hydroxy-2-nonenal, 4-hydroxy-2-hexenal, and benzaldehyde) increased. The redox metabolites GSH, GSSG, NADPH, NAD+, S-nitrosoglutathione, arginine, and tetrahydrobiopterin had a positive correlation with the ejection fraction and a negative correlation with the level of lactate dehydrogenase in plasma. In summary, we achieved a comprehensive, systemic understanding of the changes in the redox environment after MIRI. Our REME method could be used to evaluate the redox environment in other processes.
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Affiliation(s)
- Wen-Bin Cai
- Tianjin Key Laboratory of Metabolic Diseases, Collaborative Innovation Center of Tianjin for Medical Epigenetics, Center for Cardiovascular Diseases, Research Center of Basic Medical Sciences, Department of Physiology and Pathophysiology, Tianjin Medical University, Tianjin, 300070, China
| | - Yin-Jiao Zhao
- Tianjin Key Laboratory of Metabolic Diseases, Collaborative Innovation Center of Tianjin for Medical Epigenetics, Center for Cardiovascular Diseases, Research Center of Basic Medical Sciences, Department of Physiology and Pathophysiology, Tianjin Medical University, Tianjin, 300070, China
| | - Le Liu
- Tianjin Key Laboratory of Metabolic Diseases, Collaborative Innovation Center of Tianjin for Medical Epigenetics, Center for Cardiovascular Diseases, Research Center of Basic Medical Sciences, Department of Physiology and Pathophysiology, Tianjin Medical University, Tianjin, 300070, China
| | - Qian Cheng
- Tianjin Key Laboratory of Metabolic Diseases, Collaborative Innovation Center of Tianjin for Medical Epigenetics, Center for Cardiovascular Diseases, Research Center of Basic Medical Sciences, Department of Physiology and Pathophysiology, Tianjin Medical University, Tianjin, 300070, China
| | - Jin Wang
- Tianjin Key Laboratory of Metabolic Diseases, Collaborative Innovation Center of Tianjin for Medical Epigenetics, Center for Cardiovascular Diseases, Research Center of Basic Medical Sciences, Department of Physiology and Pathophysiology, Tianjin Medical University, Tianjin, 300070, China
| | - Xue-Lian Shi
- Tianjin Key Laboratory of Metabolic Diseases, Collaborative Innovation Center of Tianjin for Medical Epigenetics, Center for Cardiovascular Diseases, Research Center of Basic Medical Sciences, Department of Physiology and Pathophysiology, Tianjin Medical University, Tianjin, 300070, China
| | - Liu Yao
- Tianjin Key Laboratory of Metabolic Diseases, Collaborative Innovation Center of Tianjin for Medical Epigenetics, Center for Cardiovascular Diseases, Research Center of Basic Medical Sciences, Department of Physiology and Pathophysiology, Tianjin Medical University, Tianjin, 300070, China
| | - Xin-Hua Qiao
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China
| | - Yi Zhu
- Tianjin Key Laboratory of Metabolic Diseases, Collaborative Innovation Center of Tianjin for Medical Epigenetics, Center for Cardiovascular Diseases, Research Center of Basic Medical Sciences, Department of Physiology and Pathophysiology, Tianjin Medical University, Tianjin, 300070, China
| | - Chang Chen
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China.
| | - Xu Zhang
- Tianjin Key Laboratory of Metabolic Diseases, Collaborative Innovation Center of Tianjin for Medical Epigenetics, Center for Cardiovascular Diseases, Research Center of Basic Medical Sciences, Department of Physiology and Pathophysiology, Tianjin Medical University, Tianjin, 300070, China.
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18
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Liu YX, Zhang WY, Han GK, Zhou YW, Li LF, Kong FP, Gao YZ, Du CY, Wang JJ, Du L, Cai WB, Yin GP. Deactivated Pt Electrocatalysts for the Oxygen Reduction Reaction: The Regeneration Mechanism and a Regenerative Protocol. ACS Catal 2021. [DOI: 10.1021/acscatal.1c01680] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yu-Xin Liu
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, 92 West Dazhi Street, Harbin 150001, China
| | - Wei-Yi Zhang
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200438, China
| | - Guo-Kang Han
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, 92 West Dazhi Street, Harbin 150001, China
| | - Ya-Wei Zhou
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200438, China
| | - Ling-Feng Li
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, 92 West Dazhi Street, Harbin 150001, China
| | - Fan-Peng Kong
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, 92 West Dazhi Street, Harbin 150001, China
| | - Yun-Zhi Gao
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, 92 West Dazhi Street, Harbin 150001, China
| | - Chun-Yu Du
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, 92 West Dazhi Street, Harbin 150001, China
| | - Jia-Jun Wang
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, 92 West Dazhi Street, Harbin 150001, China
| | - Lei Du
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, 92 West Dazhi Street, Harbin 150001, China
| | - Wen-Bin Cai
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200438, China
| | - Ge-Ping Yin
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, 92 West Dazhi Street, Harbin 150001, China
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19
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Li H, Jiang TW, Qin X, Chen J, Ma XY, Jiang K, Zhang XG, Cai WB. Selective Reduction of CO 2 to CO on an Sb-Modified Cu Electrode: Spontaneous Fabrication and Physical Insight. ACS Catal 2021. [DOI: 10.1021/acscatal.1c00860] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Hong Li
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200438, China
| | - Tian-Wen Jiang
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200438, China
| | - Xianxian Qin
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200438, China
| | - Jie Chen
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200438, China
| | - Xian-Yin Ma
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200438, China
| | - Kun Jiang
- Institute of Fuel Cells, Interdisciplinary Science Research Center, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Xia-Guang Zhang
- Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, College of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China
| | - Wen-Bin Cai
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200438, China
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20
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Jiang TW, Zhou YW, Ma XY, Qin X, Li H, Ding C, Jiang B, Jiang K, Cai WB. Spectrometric Study of Electrochemical CO2 Reduction on Pd and Pd-B Electrodes. ACS Catal 2021. [DOI: 10.1021/acscatal.0c03725] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Tian-Wen Jiang
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200438, China
| | - Ya-Wei Zhou
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200438, China
| | - Xian-Yin Ma
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200438, China
| | - Xianxian Qin
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200438, China
| | - Hong Li
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200438, China
| | - Chen Ding
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200438, China
| | - Bei Jiang
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, Sichuan, China
| | - Kun Jiang
- Institute of Fuel Cells, Interdisciplinary Science Research Centre, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Wen-Bin Cai
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200438, China
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Ma XY, Ding C, Li H, Jiang K, Duan S, Cai WB. Revisiting the Acetaldehyde Oxidation Reaction on a Pt Electrode by High-Sensitivity and Wide-Frequency Infrared Spectroscopy. J Phys Chem Lett 2020; 11:8727-8734. [PMID: 32960060 DOI: 10.1021/acs.jpclett.0c02558] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
High-sensitivity and wide-frequency attenuated total reflection surface-enhanced infrared absorption spectroscopy (ATR-SEIRAS) is highly demanded in unraveling electrocatalytic processes at the molecular level. In this work, an in situ ATR-SEIRAS technique incorporating a micromachined Si wafer window, p-polarized infrared radiation, and isotope labeling is extended to revisit the acetaldehyde oxidation reaction (AOR) on a Pt electrode in an acidic medium. New spectral features in the fingerprint region are detected, including ω(C-H) at 1078 cm-1 and νas(C-C-O) at 919 cm-1 for adsorbed acetaldehyde and δ(O-C-O) at 689 cm-1 for adsorbed acetate, besides the other enhanced and clearly discriminated spectral signals at higher frequencies. Time-evolved and potential-dependent ATR-SEIRAS measurements together with advanced density functional theory calculations considering the coadsorption of CO and C2 species enable clarification of the structures and roles of surface C2 intermediates (η1(C)-acetyl and η1(H)-acetaldehyde), as reflected by the two bands at 1630 and 1663 cm-1, respectively, leading to updated pathways for the AOR on a Pt electrode.
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Affiliation(s)
- Xian-Yin Ma
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200438, China
| | - Chen Ding
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200438, China
| | - Hong Li
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200438, China
| | - Kun Jiang
- Institute of Fuel Cells, Interdisciplinary Research Center, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Sai Duan
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200438, China
| | - Wen-Bin Cai
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200438, China
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Shen LF, Lu BA, Li YY, Liu J, Huang-Fu ZC, Peng H, Ye JY, Qu XM, Zhang JM, Li G, Cai WB, Jiang YX, Sun SG. Interfacial Structure of Water as a New Descriptor of the Hydrogen Evolution Reaction. Angew Chem Int Ed Engl 2020; 59:22397-22402. [PMID: 32893447 DOI: 10.1002/anie.202007567] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [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: 05/26/2020] [Indexed: 11/12/2022]
Abstract
Driven by the persisting poor understanding of the sluggish kinetics of the hydrogen evolution reaction (HER) on Pt in alkaline media, a direct correlation of the interfacial water structure and activity is still yet to be established. Herein, using Pt and Pt-Ni nanoparticles we first demonstrate a strong dependence of the proton donor structure on the HER activity and pH. The structure of the first layer changes from the proton acceptors to the donors with increasing pH. In the base, the reactivity of the interfacial water varied its structure, and the activation energies of water dissociation increased in the sequence: the dangling O-H bonds < the trihedrally coordinated water < the tetrahedrally coordinated water. Moreover, optimizing the adsorption of H and OH intermediates can re-orientate the interfacial water molecules with their H atoms pointing towards the electrode surface, thereby enhancing the kinetics of HER. Our results clarified the dynamic role of the water structure at the electrode-electrolyte interface during HER and the design of highly efficient HER catalysts.
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Affiliation(s)
- Lin-Fan Shen
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, PR China
| | - Bang-An Lu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, PR China
| | - Yu-Yang Li
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, PR China
| | - Jia Liu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, PR China
| | - Zhi-Chao Huang-Fu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, PR China
| | - Hao Peng
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, PR China
| | - Jin-Yu Ye
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, PR China
| | - Xi-Ming Qu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, PR China
| | - Jun-Ming Zhang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, PR China
| | - Guang Li
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, PR China
| | - Wen-Bin Cai
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai, 200433, China
| | - Yan-Xia Jiang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, PR China
| | - Shi-Gang Sun
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, PR China
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Qin X, Li H, Xie S, Li K, Jiang T, Ma XY, Jiang K, Zhang Q, Terasaki O, Wu Z, Cai WB. Mechanistic Analysis-Guided Pd-Based Catalysts for Efficient Hydrogen Production from Formic Acid Dehydrogenation. ACS Catal 2020. [DOI: 10.1021/acscatal.0c00225] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xianxian Qin
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200433, China
| | - Hong Li
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200433, China
| | - Songhai Xie
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200433, China
| | - Kai Li
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Tianwen Jiang
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200433, China
| | - Xian-Yin Ma
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200433, China
| | - Kun Jiang
- School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Qing Zhang
- Centre for High-resolution Electron Microscopy (CℏEM), School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Osamu Terasaki
- Centre for High-resolution Electron Microscopy (CℏEM), School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Zhijian Wu
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Wen-Bin Cai
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200433, China
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Yan M, Cai WB, Hua T, Cheng Q, Ai D, Jiang HF, Zhang X. Lipidomics reveals the dynamics of lipid profile altered by omega-3 polyunsaturated fatty acid supplementation in healthy people. Clin Exp Pharmacol Physiol 2020; 47:1134-1144. [PMID: 32068900 DOI: 10.1111/1440-1681.13285] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [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: 04/25/2019] [Revised: 02/12/2020] [Accepted: 02/14/2020] [Indexed: 11/27/2022]
Abstract
Glycerophospholipids (GPs) and sphingolipids (SPs) are important lipid components in the body and play biological functions. Omega-3 polyunsaturated fatty acids (n-3 PUFAs) are important nutrients, and their supplements are commonly used for preventing some diseases. However, the effect of n-3 PUFAs on the human glycerophospholipidome and sphingolipidome is unclear. We used targeted lipidomics to study the GP and SP profile of healthy individuals after supplementation with n-3 PUFAs for 3, 7, 14 and 21 days. Fuzzy c-means clustering was used to cluster the lipid species into six classes reflecting different changed-content patterns after n-3 PUFA supplementation. Among the species with significantly changed content, lysophospholipids were the most sensitive; their content started to increase on day 3. The content of phosphatidylserines increased at a later stage. The content of most of the phosphatidylcholines and alkylphosphatidylcholines decreased on day 21. A correlation network analysis of lipid species suggested that some enzymes involved in the metabolism of lysophospholipids and phosphatidylserines were regulated by n-3 PUFAs. Levels of creatine kinase-MB (CK-MB), urea, glucose, triglycerides and total bilirubin were altered by n-3 PUFA at 21 days. Correlation analysis revealed that the level of CK-MB was negatively correlated with those of species in lysophosphatidic acid, lysophosphatidylcholine, lysophosphatidylethanolamine and phosphatidylserine classes, which were increased by n-3 PUFA supplementation. With the analysis in this work, we demonstrated the regular pattern of n-3 PUFAs on GP and SP metabolism, which provides a pharmacological basis for n-3 PUFAs for clinical application.
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Affiliation(s)
- Meng Yan
- Tianjin Key Laboratory of Metabolic Diseases and Department of Physiology, Tianjin Medical University, Tianjin, China
| | - Wen-Bin Cai
- Tianjin Key Laboratory of Metabolic Diseases and Department of Physiology, Tianjin Medical University, Tianjin, China
| | - Tong Hua
- Tianjin Key Laboratory of Metabolic Diseases and Department of Physiology, Tianjin Medical University, Tianjin, China
| | - Qian Cheng
- Tianjin Key Laboratory of Metabolic Diseases and Department of Physiology, Tianjin Medical University, Tianjin, China
| | - Ding Ai
- Tianjin Key Laboratory of Metabolic Diseases and Department of Physiology, Tianjin Medical University, Tianjin, China
| | - Hong-Feng Jiang
- Key Laboratory of Remodeling-Related Cardiovascular Diseases, Ministry of Education, Beijing Collaborative Innovation Center for Cardiovascular Disorders, Beijing Anzhen Hospital, Capital Medical University, Beijing, China.,Beijing Institute of Heart, Lung and Blood Vessel Disease, Beijing, China
| | - Xu Zhang
- Tianjin Key Laboratory of Metabolic Diseases and Department of Physiology, Tianjin Medical University, Tianjin, China
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Yang F, Ma X, Cai WB, Song P, Xu W. Nature of Oxygen-Containing Groups on Carbon for High-Efficiency Electrocatalytic CO2 Reduction Reaction. J Am Chem Soc 2019; 141:20451-20459. [DOI: 10.1021/jacs.9b11123] [Citation(s) in RCA: 82] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Fa Yang
- State Key Laboratory of Electroanalytical Chemistry, and Jilin Province Key Laboratory of Low Carbon Chemical Power, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, P.R. China
- University of Science and Technology of China, Hefei, Anhui 230026, P.R. China
| | - Xianyin Ma
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200433, P.R. China
| | - Wen-Bin Cai
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200433, P.R. China
| | - Ping Song
- State Key Laboratory of Electroanalytical Chemistry, and Jilin Province Key Laboratory of Low Carbon Chemical Power, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, P.R. China
| | - Weilin Xu
- State Key Laboratory of Electroanalytical Chemistry, and Jilin Province Key Laboratory of Low Carbon Chemical Power, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, P.R. China
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Wang CT, Jiang B, Zhou YW, Jiang TW, Liu JH, Zhu GD, Cai WB. Exploiting the Surface-Enhanced IR Absorption Effect in the Photothermally Induced Resonance AFM-IR Technique toward Nanoscale Chemical Analysis. Anal Chem 2019; 91:10541-10548. [DOI: 10.1021/acs.analchem.9b01554] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Chiao-Tzu Wang
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200433, People’s Republic of China
| | - Bei Jiang
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200433, People’s Republic of China
| | - Ya-Wei Zhou
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200433, People’s Republic of China
| | - Tian-Wen Jiang
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200433, People’s Republic of China
| | - Jian-Hua Liu
- Department of Optical Science and Engineering, Fudan University, Shanghai, People’s Republic of China
| | - Guo-Dong Zhu
- Department of Materials Science, Fudan University, Shanghai, People’s Republic of China
| | - Wen-Bin Cai
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200433, People’s Republic of China
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Cai WB. (Invited) Developing Electrocatalysts for Ethanol Oxidation Reaction in Alkaline Media. Meet Abstr 2018; MA2018-01:2221-2221. [DOI: 10.1149/ma2018-01/37/2221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
The ethanol oxidation reaction (EOR) has drawn increasing interest in electrocatalysis and fuel cells by considering that ethanol as a biomass fuel has advantages of low toxicity, renewability, and a high theoretical energy density compared to methanol. Alternatively, the ethanol electroreforming is a low energy cost technology that may produce valuable chemicals in the anode and clean hydrogen in the cathode at low temperature and atmospheric pressure. In both of the above energy conversion and storage technologies, the efficient oxidation of the ethanol in the anode by means of electrocatalysis is essential and the efficiency is largely determined by the chosen catalysts. Notably, in alkaline media both Pt and Pd show enhanced EOR activities.
The mechanistic investigation as well as the rational design of electrocatalysts are challenging yet essential for the desired complete oxidation to CO2, in considering that EOR is a complex multiple-electron process involving various intermediates and products. This talk starts with discussion on the mechanistic understanding of EOR on Pt and Pd surfaces using selected publications as examples. Consensuses from the mechanistic studies are that sufficient active surface sites to facilitate the cleavage of the C–C bond and the adsorption of water or its residue are critical for obtaining a higher electro-oxidation activity. I will then show by cases how this understanding has been applied to achieve improved performance on Pt- and Pd-based catalysts for EOR in alkaline media through optimizing electronic and bifunctional effects, as well as by tuning their surface composition and structure.
Acknowledgements
:Financial support from the NSFC (grant No. 21733004 and 21473039)and the 973 Program (No. 2015CB932303) of MOST is highly appreciated
References
[1] Y. Wang, S.Z. Zou, and W. B. Cai, Catalysts, 5, 1507 (2015).
[2] Y. Y. Yang, J. Ren, Q. X. Li, Z. Y. Zhou, S. G. Sun and W. B. Cai, ACS Catal., 4, 798(2014).
[3] H. Wang, K. Jiang, Q.L. Chen, Z.X. Xie, W.B. Cai, Chem. Commun., 52, 374(2016).
[4] T. T. Zhao, H. Wang, X. Han, K. Jiang, H. X. Lin, Z. X. Xie and W. B. Cai, J. Mater. Chem. A, 4, 15845 (2016).
[5] W. J. Huang, X. Y. Ma, H. Wang, R. F. Feng, J. G. Zhou, P. N. Duchesne, P. Zhang, F. J. Chen, N. Han, F.P. Zhao, J.H. Zhou, W.B. Cai and Y.G. Li, Adv. Mater. 29 (2017). DOI: 10.1002/adma.201703057.
[6] X.Y. Ma, Y.F. Chen, Q.X. Li, W.F. Lin, W.B. Cai, to be submitted.
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Jiang B, Zhang XG, Jiang K, Wu DY, Cai WB. Boosting Formate Production in Electrocatalytic CO2 Reduction over Wide Potential Window on Pd Surfaces. J Am Chem Soc 2018; 140:2880-2889. [DOI: 10.1021/jacs.7b12506] [Citation(s) in RCA: 237] [Impact Index Per Article: 39.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Bei Jiang
- Shanghai
Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative
Innovation Center of Chemistry for Energy Materials, Department of
Chemistry, Fudan University, Shanghai 200433, P. R. China
| | - Xia-Guang Zhang
- State
Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative
Innovation Center of Chemistry for Energy Materials, Department of
Chemistry, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China
| | - Kun Jiang
- Rowland
Institute, Harvard University, Cambridge, Massachusetts 02142, United States
| | - De-Yin Wu
- State
Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative
Innovation Center of Chemistry for Energy Materials, Department of
Chemistry, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China
| | - Wen-Bin Cai
- Shanghai
Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative
Innovation Center of Chemistry for Energy Materials, Department of
Chemistry, Fudan University, Shanghai 200433, P. R. China
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29
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Fang BZ, Cai WB, Liu RT. [A case report of PPP syndrome]. Zhonghua Nei Ke Za Zhi 2018; 57:138-140. [PMID: 29397601 DOI: 10.3760/cma.j.issn.0578-1426.2018.02.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
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Ma XY, Chen Y, Wang H, Li QX, Lin WF, Cai WB. Electrocatalytic oxidation of ethanol and ethylene glycol on cubic, octahedral and rhombic dodecahedral palladium nanocrystals. Chem Commun (Camb) 2018; 54:2562-2565. [DOI: 10.1039/c7cc08793d] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ethanol and ethylene glycol electrocatalytic oxidation on Pd cubic, octahedral and rhombic dodecahedral nanocrystals in alkaline media was systematically investigated.
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Affiliation(s)
- Xian-Yin Ma
- Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power
- College of Environmental and Chemical Engineering
- Shanghai University of Electric Power
- Shanghai 200090
- China
| | - Yafeng Chen
- Department of Chemical Engineering
- Loughborough University
- Loughborough
- UK
| | - Han Wang
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials
- Collaborative Innovation Center of Chemistry for Energy Materials
- Department of Chemistry
- Fudan University
- Shanghai 200433
| | - Qiao-Xia Li
- Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power
- College of Environmental and Chemical Engineering
- Shanghai University of Electric Power
- Shanghai 200090
- China
| | - Wen-Feng Lin
- Department of Chemical Engineering
- Loughborough University
- Loughborough
- UK
| | - Wen-Bin Cai
- Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power
- College of Environmental and Chemical Engineering
- Shanghai University of Electric Power
- Shanghai 200090
- China
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31
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Zhu S, Jiang B, Cai WB, Shao M. Direct Observation on Reaction Intermediates and the Role of Bicarbonate Anions in CO2 Electrochemical Reduction Reaction on Cu Surfaces. J Am Chem Soc 2017; 139:15664-15667. [DOI: 10.1021/jacs.7b10462] [Citation(s) in RCA: 275] [Impact Index Per Article: 39.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
| | - Bei Jiang
- Shanghai
Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative
Innovation Center of Chemistry for Energy Materials, Department of
Chemistry, Fudan University, Shanghai 200433, China
| | - Wen-Bin Cai
- Shanghai
Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative
Innovation Center of Chemistry for Energy Materials, Department of
Chemistry, Fudan University, Shanghai 200433, China
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Huang W, Ma XY, Wang H, Feng R, Zhou J, Duchesne PN, Zhang P, Chen F, Han N, Zhao F, Zhou J, Cai WB, Li Y. Promoting Effect of Ni(OH) 2 on Palladium Nanocrystals Leads to Greatly Improved Operation Durability for Electrocatalytic Ethanol Oxidation in Alkaline Solution. Adv Mater 2017; 29. [PMID: 28762572 DOI: 10.1002/adma.201703057] [Citation(s) in RCA: 106] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Revised: 06/25/2017] [Indexed: 05/10/2023]
Abstract
Most electrocatalysts for the ethanol oxidation reaction suffer from extremely limited operational durability and poor selectivity toward the CC bond cleavage. In spite of tremendous efforts over the past several decades, little progress has been made in this regard. This study reports the remarkable promoting effect of Ni(OH)2 on Pd nanocrystals for electrocatalytic ethanol oxidation reaction in alkaline solution. A hybrid electrocatalyst consisting of intimately mixed nanosized Pd particles, defective Ni(OH)2 nanoflakes, and a graphene support is prepared via a two-step solution method. The optimal product exhibits a high mass-specific peak current of >1500 mA mg-1Pd , and excellent operational durability forms both cycling and chronoamperometric measurements in alkaline solution. Most impressively, this hybrid catalyst retains a mass-specific current of 440 mA mg-1 even after 20 000 s of chronoamperometric testing, and its original activity can be regenerated via simple cyclic voltammetry cycles in clean KOH. This great catalyst durability is understood based on both CO stripping and in situ attenuated total reflection infrared experiments suggesting that the presence of Ni(OH)2 alleviates the poisoning of Pd nanocrystals by carbonaceous intermediates. The incorporation of Ni(OH)2 also markedly shifts the reaction selectivity from the originally predominant C2 pathway toward the more desirable C1 pathway, even at room temperature.
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Affiliation(s)
- Wenjing Huang
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, 215123, China
| | - Xian-Yin Ma
- Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power, Shanghai University of Electric Power, Shanghai, 200090, China
| | - Han Wang
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai, 200433, China
| | - Renfei Feng
- Canadian Light Source Inc., Saskatoon, Saskatchewan, S7N 0X4, Canada
| | - Jigang Zhou
- Canadian Light Source Inc., Saskatoon, Saskatchewan, S7N 0X4, Canada
| | - Paul N Duchesne
- Department of Chemistry, Dalhousie University, Halifax, NS, B3H 4R2, Canada
| | - Peng Zhang
- Department of Chemistry, Dalhousie University, Halifax, NS, B3H 4R2, Canada
| | - Fengjiao Chen
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, 215123, China
| | - Na Han
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, 215123, China
| | - Feipeng Zhao
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, 215123, China
| | - Junhua Zhou
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, 215123, China
| | - Wen-Bin Cai
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai, 200433, China
| | - Yanguang Li
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, 215123, China
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33
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Jiang K, Wang JY, Zhao TT, Cai WB. Formic acid oxidation at palladium electrode in acidic media containing chloride anions: An in situ ATR-SEIRAS investigation. J Electroanal Chem (Lausanne) 2017. [DOI: 10.1016/j.jelechem.2016.12.021] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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34
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Cai WB. Experimental Study on Fatigue Strength of Super-high Strength Sucker Rod. Materials Science and Engineering 2017. [DOI: 10.1142/9789813226517_0079] [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] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Affiliation(s)
- Wen-Bin Cai
- Petroleum Engineering Academy, XI’an shiyou University, XI’an, Shanxi, 710065, China
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35
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Zhang S, Jiang B, Jiang K, Cai WB. Surfactant-Free Synthesis of Carbon-Supported Palladium Nanoparticles and Size-Dependent Hydrogen Production from Formic Acid-Formate Solution. ACS Appl Mater Interfaces 2017; 9:24678-24687. [PMID: 28658569 DOI: 10.1021/acsami.7b08441] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Steerable hydrogen generation from the hydrogen storage chemical formic acid via heterogeneous catalysis has attracted considerable interest given the safety and efficiency concerns in handling H2. Herein, a series of carbon-supported capping-agent-free Pd nanoparticles (NPs) with mean sizes tunable from 2.0 to 5.2 nm are developed due to the demand for more efficient dehydrogenation from a formic acid-formate solution of pH 3.5 at room temperature. The trick for the facile size-controlled synthesis of Pd/C catalysts is the selective addition of Na2CO3, NH3·H2O, or NaOH to a Pd(II) solution to attain initial pH values of 7-9.5. For comparison, cuboctahedron modeling and electrochemical COads stripping methods are applied to evaluate active surface Pd sites for turnover frequency (TOF) calculation. Both mass activity and specific activity (TOF) of hydrogen production are not only time-dependent but also Pd-size-dependent. An initial H2 production rate of 246 L·h-1·gPd-1 is achieved on 2.0 nm Pd/C at 303 K, together with a TOF of 1815 h-1 on the basis of cuboctahedron modeling of surface-active Pd sites. The initial TOF exhibits a significant rise from 3.5 down to 2.8 nm and then levels off below 2.8 nm and even shows a maxima at ca. 2.2 nm using the electrochemical surface area for calculation. The volcano-shaped dependence of TOF on Pd NP size may be better attributed to the changing ratios of terrace sites to defect sites on Pd NPs.
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Affiliation(s)
- Shuo Zhang
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University , Shanghai 200433, China
| | - Bei Jiang
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University , Shanghai 200433, China
| | - Kun Jiang
- Rowland Institute, Harvard University , Cambridge, Massachusetts 02142, United States
| | - Wen-Bin Cai
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University , Shanghai 200433, China
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Wan YK, Sang W, Chen B, Yang YG, Zhang LQ, Sun AN, Liu YJ, Xu Y, Cai YP, Wang CB, Shen YF, Jiang YW, Zhang XY, Xu W, Hong M, Chen T, Xu RR, Li F, Xu YL, Xue Y, Lu YL, He ZM, Dong WM, Chen Z, Ji MH, Yang YY, Zhai LJ, Zhao Y, Wu GQ, Ding JH, Cheng J, Cai WB, Sun YM, Ouyang J. [Distribution and drug resistance of pathogens at hematology department of Jiangsu Province from 2014 to 2015: results from a multicenter, retrospective study]. Zhonghua Xue Ye Xue Za Zhi 2017; 38:602-606. [PMID: 28810329 PMCID: PMC7342276 DOI: 10.3760/cma.j.issn.0253-2727.2017.07.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Subscribe] [Scholar Register] [Received: 11/12/2016] [Indexed: 11/05/2022]
Abstract
Objective: To describe the distribution and drug resistance of pathogens at hematology department of Jiangsu Province from 2014 to 2015 to provide reference for empirical anti-infection treatment. Methods: Pathogens were from hematology department of 26 tertiary hospitals in Jiangsu Province from 2014 to 2015. Antimicrobial susceptibility testing was carried out according to a unified protocol using Kirby-Bauer method or agar dilution method. Collection of drug susceptibility results and corresponding patient data were analyzed. Results: The separated pathogens amounted to 4 306. Gram-negative bacteria accounted for 64.26%, while the proportions of gram-positive bacteria and funguses were 26.99% and 8.75% respectively. Common gram-negative bacteria were Escherichia coli (20.48%) , Klebsiella pneumonia (15.40%) , Pseudomonas aeruginosa (8.50%) , Acinetobacter baumannii (5.04%) and Stenotropho-monas maltophilia (3.41%) respectively. CRE amounted to 123 (6.68%) . Common gram-positive bacteria were Staphylococcus aureus (4.92%) , Staphylococcus hominis (4.88%) and Staphylococcus epidermidis (4.71%) respectively. Candida albicans were the main fungus which accounted for 5.43%. The rates of Escherichia coli and Klebsiella pneumonia resistant to carbapenems were 3.5%-6.1% and 5.0%-6.3% respectively. The rates of Pseudomonas aeruginosa resistant to tobramycin and amikacin were 3.2% and 3.3% respectively. The resistant rates of Acinetobacter baumannii towards tobramycin and cefoperazone/sulbactam were both 19.2%. The rates of Stenotrophomonas maltophilia resistant to minocycline and sulfamethoxazole were 3.5% and 9.3% respectively. The rates of Staphylococcus aureus, Enterococcus faecium and Enterococcus faecalis resistant wards vancomycin were 0, 6.4% and 1.4% respectively; also, the rates of them resistant to linezolid were 1.2%, 0 and 1.6% respectively; in addition, the rates of them resistant to teicoplanin were 2.8%, 14.3% and 8.0% respectively. Furthermore, MRSA accounted for 39.15% (83/212) . Conclusions: Pathogens were mainly gram-negative bacteria. CRE accounted for 6.68%. The rates of Escherichia coli and Klebsiella pneumonia resistant to carbapenems were lower compared with other antibacterial agents. The rates of gram-positive bacteria resistant to vancomycin, linezolid and teicoplanin were still low. MRSA accounted for 39.15%.
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Affiliation(s)
- Y K Wan
- The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing 210008, China
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - J Ouyang
- The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing 210008, China
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Abstract
Engineering active grain boundaries (GBs) in oxide-derived (OD) electrocatalysts is critical to improve the selectivity in CO2 reduction reaction (CO2RR), which is becoming an increasingly important pathway for renewable energy storage and usage. Different from traditional in situ electrochemical reduction under CO2RR conditions, where some metal oxides are converted into active metallic phases but with decreased GB densities, here we introduce the Li electrochemical tuning (LiET) method to controllably reduce the oxide precursors into interconnected ultrasmall metal nanoparticles with enriched GBs. By using ZnO as a case study, we demonstrate that the LiET-Zn with freshly exposed GBs exhibits a CO2-to-CO partial current of ∼23 mA cm-2 at an overpotential of -948 mV, representing a 5-fold improvement from the OD-Zn with GBs eliminated during the in situ electro-reduction process. A maximal CO Faradaic efficiency of ∼91.1% is obtained by LiET-Zn on glassy carbon substrate. The CO2-to-CO mechanism and interfacial chemistry are further probed at the molecular level by advanced in situ spectroelectrochemical technique, where the reaction intermediate of carboxyl species adsorbed on LiET-Zn surface is revealed.
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Affiliation(s)
- Kun Jiang
- Rowland Institute, Harvard University , Cambridge, Massachusetts 02142, United States
| | - Han Wang
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University , Shanghai 200433, China
| | - Wen-Bin Cai
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University , Shanghai 200433, China
| | - Haotian Wang
- Rowland Institute, Harvard University , Cambridge, Massachusetts 02142, United States
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38
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Wang H, Jiang B, Zhao TT, Jiang K, Yang YY, Zhang J, Xie Z, Cai WB. Electrocatalysis of Ethylene Glycol Oxidation on Bare and Bi-Modified Pd Concave Nanocubes in Alkaline Solution: An Interfacial Infrared Spectroscopic Investigation. ACS Catal 2017. [DOI: 10.1021/acscatal.6b03108] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Han Wang
- Shanghai
Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative
Innovation Center of Chemistry for Energy Materials, Department of
Chemistry, Fudan University, Shanghai 200433, China
| | - Bei Jiang
- Shanghai
Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative
Innovation Center of Chemistry for Energy Materials, Department of
Chemistry, Fudan University, Shanghai 200433, China
| | - Ting-Ting Zhao
- Shanghai
Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative
Innovation Center of Chemistry for Energy Materials, Department of
Chemistry, Fudan University, Shanghai 200433, China
| | - Kun Jiang
- Shanghai
Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative
Innovation Center of Chemistry for Energy Materials, Department of
Chemistry, Fudan University, Shanghai 200433, China
| | - Yao-Yue Yang
- College
of Chemistry and Environmental Protection Engineering, Southwest University for Nationalities, Chengdu 610041, China
| | - Jiawei Zhang
- State
Key Laboratory of Physical Chemistry of Solid Surfaces, Department
of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Zhaoxiong Xie
- State
Key Laboratory of Physical Chemistry of Solid Surfaces, Department
of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Wen-Bin Cai
- Shanghai
Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative
Innovation Center of Chemistry for Energy Materials, Department of
Chemistry, Fudan University, Shanghai 200433, China
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39
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Zhang YJ, Bai DN, Du JX, Jin L, Ma J, Yang JL, Cai WB, Feng Y, Xing CY, Yuan LJ, Duan YY. Ultrasound-guided imaging of junctional adhesion molecule-A-targeted microbubbles identifies vulnerable plaque in rabbits. Biomaterials 2016; 94:20-30. [PMID: 27088407 DOI: 10.1016/j.biomaterials.2016.03.049] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Revised: 03/17/2016] [Accepted: 03/31/2016] [Indexed: 01/29/2023]
Abstract
Identification of vulnerable atherosclerotic plaques by imaging the molecular characteristics is intensively studied recently, in which verification of specific markers is the critical step. JAM-A, a junctional membrane protein, is involved in the plaque formation, while it is unknown whether it can serve as a marker for vulnerable plaques. Vulnerable and stable plaques were created in rabbits with high cholesterol diet with or without partial ligation of carotid artery respectively. Significant higher JAM-A expression was found in vulnerable plaques than that in stable plaques. Furthermore, JAM-A was not only expressed in the endothelium, but also abundantly expressed in CD68-positive area. Next, JAM-A antibody conjugated microbubbles (MBJAM-A) or control IgG-conjugated microbubbles (MBC) were developed by conjugating the biotinylated antibodies to the streptavidin modified microbubbles, and visualization by contrast-enhance ultrasound (CEUS). Signal intensity of MBJAM-A was substantially enhanced and prolonged in the vulnerable plaque and some of the MBJAM-A was found colocalized with CD68 positive macrophages. In addition, cell model revealed that MBJAM-A were able to be phagocytized by activated macrophages. Taken together, we have found that increase of JAM-A serves as a marker for vulnerable plaques and targeted CEUS would be possibly a novel non-invasive molecular imaging method for plaque vulnerability.
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Affiliation(s)
- Ya-Jun Zhang
- Department of Ultrasound Diagnostics, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Dan-Na Bai
- Department of Cardiology, 323 Hospital of PLA, Xi'an, China; Department of Physiology, Fourth Military Medical University, Xi'an, China
| | - Jing-Xi Du
- Department of Ultrasound Diagnostics, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Liang Jin
- Department of Dermatology, Air Force General Hospital, Beijing, China.
| | - Jing Ma
- Department of Ultrasound Diagnostics, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Jia-Lei Yang
- Department of Neurology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Wen-Bin Cai
- Department of Ultrasound Diagnostics, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Yang Feng
- Department of Ultrasound Diagnostics, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Chang-Yang Xing
- Department of Ultrasound Diagnostics, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Li-Jun Yuan
- Department of Ultrasound Diagnostics, Tangdu Hospital, Fourth Military Medical University, Xi'an, China.
| | - Yun-You Duan
- Department of Ultrasound Diagnostics, Tangdu Hospital, Fourth Military Medical University, Xi'an, China.
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40
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Jiang K, Chang J, Wang H, Brimaud S, Xing W, Behm RJ, Cai WB. Small Addition of Boron in Palladium Catalyst, Big Improvement in Fuel Cell's Performance: What May Interfacial Spectroelectrochemistry Tell? ACS Appl Mater Interfaces 2016; 8:7133-8. [PMID: 26938473 DOI: 10.1021/acsami.6b00416] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Direct formic acid fuel cell (DFAFC) with Pd-based catalyst anode is a promising energy converter to power portable devices. However, its commercialization is entangled with insufficient activity and poor stability of existing anode catalysts. Here we initially report that a DFAFC using facilely synthesized Pd-B/C with ca. 6 at. % B doping as the anode catalyst yields a maximum output power density of 316 mW cm(-2) at 30 °C, twice that with a same DFAFC using otherwise the state-of-the-art Pd/C. More strikingly, at a constant voltage of 0.3 V, the output power of the former cell is ca. 9 times as high as that of the latter after 4.5 h of continuous operation. In situ attenuated total reflection infrared spectroscopy is applied to probe comparatively the interfacial behaviors at Pd-B/C and Pd/C in conditions mimicking those for the DFAFC anode operation, revealing that the significantly improved cell performance correlates well with a substantially lowered CO accumulation at B-doped Pd surfaces.
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Affiliation(s)
- Kun Jiang
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University , Shanghai 200433, China
| | - Jinfa Chang
- State Key Laboratory of Electroanalytical Chemistry, Jilin Province Key Laboratory of Low Carbon Chemical Power Sources, Laboratory of Advanced Power Sources, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun 130022, China
| | - Han Wang
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University , Shanghai 200433, China
| | - Sylvain Brimaud
- Institute of Surface Chemistry and Catalysis, Ulm University , Ulm D-89069, Germany
| | - Wei Xing
- State Key Laboratory of Electroanalytical Chemistry, Jilin Province Key Laboratory of Low Carbon Chemical Power Sources, Laboratory of Advanced Power Sources, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun 130022, China
| | - R Jürgen Behm
- Institute of Surface Chemistry and Catalysis, Ulm University , Ulm D-89069, Germany
| | - Wen-Bin Cai
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University , Shanghai 200433, China
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41
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Wang H, Jiang K, Chen Q, Xie Z, Cai WB. Carbon monoxide mediated chemical deposition of Pt or Pd quasi-monolayer on Au surfaces with superior electrocatalysis for ethanol oxidation in alkaline media. Chem Commun (Camb) 2016; 52:374-7. [DOI: 10.1039/c5cc06551h] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
CO-mediated chemical deposition of a Pt or Pd quasi-monolayer on Au surfaces with superior electrocatalysis for ethanol oxidation in alkaline media.
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Affiliation(s)
- Han Wang
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials
- Collaborative Innovation Center of Chemistry for Energy Materials
- Department of Chemistry
- Fudan University
- Shanghai 200433
| | - Kun Jiang
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials
- Collaborative Innovation Center of Chemistry for Energy Materials
- Department of Chemistry
- Fudan University
- Shanghai 200433
| | - Qiaoli Chen
- State Key Laboratory of Physical Chemistry of Solid Surfaces
- Collaborative Innovation Center of Chemistry for Energy Materials
- Department of Chemistry
- Xiamen University
- Xiamen 361005
| | - Zhaoxiong Xie
- State Key Laboratory of Physical Chemistry of Solid Surfaces
- Collaborative Innovation Center of Chemistry for Energy Materials
- Department of Chemistry
- Xiamen University
- Xiamen 361005
| | - Wen-Bin Cai
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials
- Collaborative Innovation Center of Chemistry for Energy Materials
- Department of Chemistry
- Fudan University
- Shanghai 200433
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42
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Wang Y, Jiang K, Zhang H, Zhou T, Wang J, Wei W, Yang Z, Sun X, Cai WB, Zheng G. Bio-Inspired Leaf-Mimicking Nanosheet/Nanotube Heterostructure as a Highly Efficient Oxygen Evolution Catalyst. Adv Sci (Weinh) 2015; 2:1500003. [PMID: 27668150 PMCID: PMC5024083 DOI: 10.1002/advs.201500003] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2015] [Revised: 02/06/2015] [Indexed: 05/27/2023]
Abstract
Plant leaves represent a unique 2D/1D heterostructure for enhanced surface reaction and efficient mass transport. Inspired by plant leaves, a 2D/1D CoO x heterostructure is developed that is composed of ultrathin CoO x nanosheets further assembled into a nanotube structure. This bio-inspired architecture allows a highly active Co2+ electronic structure for an efficient oxygen evolution reaction (OER) at the atomic scale, ultrahigh surface area (371 m2 g-1) for interfacial electrochemical reaction at the nanoscale, and enhanced transport of charge and electrolyte over CoO x nanotube building blocks at the microscale. Consequently, this CoO x nanosheet/nanotube heterostructure demonstrates a record-high OER performance based on cobalt compounds reported so far, with an onset potential of ≈1.46 V versus reversible hydrogen electrode (RHE), a current density of 51.2 mA cm-2 at 1.65 V versus RHE, and a Tafel slope of 75 mV dec-1. Using the CoO x nanosheet/nanotube catalyst and a Pt-mesh, a full water splitting cell with a 1.5-V battery is also demonstrated.
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Affiliation(s)
- Yongcheng Wang
- Department of Chemistry Laboratory of Advanced Materials Collaborative Innovation Center for Energy Materials Fudan University Shanghai P.R. China
| | - Kun Jiang
- Department of Chemistry Laboratory of Advanced Materials Collaborative Innovation Center for Energy Materials Fudan University Shanghai P.R. China
| | - Hui Zhang
- Soochow University-Western University Centre for Synchrotron Radiation Research Institute of Functional Nano and Soft Materials Laboratory (FUNSOM) Collaborative Innovation Center of Suzhou Nano Science and Technology Soochow University Suzhou P.R. China
| | - Tong Zhou
- State Key Laboratory of Surface Physics Key Laboratory for Computational Physical Sciences (MOE) and Department of Physics Fudan University Shanghai P.R. China
| | - Jiwei Wang
- Soochow University-Western University Centre for Synchrotron Radiation Research Institute of Functional Nano and Soft Materials Laboratory (FUNSOM) Collaborative Innovation Center of Suzhou Nano Science and Technology Soochow University Suzhou P.R. China
| | - Wei Wei
- Department of Chemistry Laboratory of Advanced Materials Collaborative Innovation Center for Energy Materials Fudan University Shanghai P.R. China
| | - Zhongqin Yang
- State Key Laboratory of Surface Physics Key Laboratory for Computational Physical Sciences (MOE) and Department of Physics Fudan University Shanghai P.R. China
| | - Xuhui Sun
- Soochow University-Western University Centre for Synchrotron Radiation Research Institute of Functional Nano and Soft Materials Laboratory (FUNSOM) Collaborative Innovation Center of Suzhou Nano Science and Technology Soochow University Suzhou P.R. China
| | - Wen-Bin Cai
- Department of Chemistry Laboratory of Advanced Materials Collaborative Innovation Center for Energy Materials Fudan University Shanghai P.R. China
| | - Gengfeng Zheng
- Department of Chemistry Laboratory of Advanced Materials Collaborative Innovation Center for Energy Materials Fudan University Shanghai P.R. China
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43
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Wang Y, Jiang K, Cai WB. Enhanced Electrocatalysis of Ethanol on Dealloyed Pd-Ni-P Film in Alkaline Media: an Infrared Spectroelectrochemical Investigation. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2014.11.182] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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44
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Jiang YF, Jiang B, Yang LK, Zhang M, Zhao LB, Yang FZ, Cai WB, Wu DY, Zhou ZY, Tian ZQ. Determination of adsorbed species of hypophosphite electrooxidation on Ni electrode by in situ infrared with shell-isolated nanoparticle-enhanced Raman spectroscopy. Electrochem commun 2014. [DOI: 10.1016/j.elecom.2014.08.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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45
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Jiang K, Xu K, Zou S, Cai WB. B-Doped Pd Catalyst: Boosting Room-Temperature Hydrogen Production from Formic Acid–Formate Solutions. J Am Chem Soc 2014; 136:4861-4. [DOI: 10.1021/ja5008917] [Citation(s) in RCA: 301] [Impact Index Per Article: 30.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kun Jiang
- Shanghai
Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative
Innovation Center of Chemistry for Energy Materials, Department of
Chemistry, Fudan University, Shanghai 200433, China
| | - Ke Xu
- Shanghai
Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative
Innovation Center of Chemistry for Energy Materials, Department of
Chemistry, Fudan University, Shanghai 200433, China
| | - Shouzhong Zou
- Department
of Chemistry and Biochemistry, Miami University, Oxford, Ohio 45056, United States
| | - Wen-Bin Cai
- Shanghai
Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative
Innovation Center of Chemistry for Energy Materials, Department of
Chemistry, Fudan University, Shanghai 200433, China
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46
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Yang YY, Ren J, Li QX, Zhou ZY, Sun SG, Cai WB. Electrocatalysis of Ethanol on a Pd Electrode in Alkaline Media: An in Situ Attenuated Total Reflection Surface-Enhanced Infrared Absorption Spectroscopy Study. ACS Catal 2014. [DOI: 10.1021/cs401198t] [Citation(s) in RCA: 142] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Yao-Yue Yang
- Shanghai
Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative
Innovation Center for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200433, China
| | - Jie Ren
- State
Key Laboratory of Physical Chemistry of Solid Surfaces, Department
of Chemistry, College of Chemistry and Chemical Engineering, School
of Energy Research, Xiamen University, Xiamen 361005, China
| | - Qiao-Xia Li
- College
of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai 200090, China
| | - Zhi-You Zhou
- State
Key Laboratory of Physical Chemistry of Solid Surfaces, Department
of Chemistry, College of Chemistry and Chemical Engineering, School
of Energy Research, Xiamen University, Xiamen 361005, China
| | - Shi-Gang Sun
- State
Key Laboratory of Physical Chemistry of Solid Surfaces, Department
of Chemistry, College of Chemistry and Chemical Engineering, School
of Energy Research, Xiamen University, Xiamen 361005, China
| | - Wen-Bin Cai
- Shanghai
Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative
Innovation Center for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200433, China
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47
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Lin T, Jiang K, Zhou BX, Xu SF, Cai WB. Liquid-phase-deposited silicon oxide film as a mask for single-sided texturing of monocrystalline Si wafers. ACS Appl Mater Interfaces 2014; 6:1207-1212. [PMID: 24372321 DOI: 10.1021/am404943y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A silicon oxide film doped with fluorine was grown on a (100)-oriented Si wafer through liquid-phase deposition (LPD) as a protective mask of the wafer's rear side in order to chemically texture the wafer's unprotected front side in a basic etching bath, which is a new process in solar-cell manufacturing. The growth rate of the LPD-SiO2 film increased monotonically with an increase of the deposition temperature up to 60 °C for a given precursor solution. Field-emission scanning electron microscopy (FE-SEM) indicates that a pyramidal surface texture forms on the front side in the chemical texturing bath, whereas the underlying Si surface on the rear side remains intact. As a result, the average reflectivity for incident light over 450-850 nm is decreased to 11.1% on the front side, and a 5.8 μm thick Si surface on the rear side is saved per wafer. The all-wet process involved in this single-sided texturing is promising for the mass production of thinner and higher-efficiency Si-based solar cells because of its simplicity and lower cost.
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Affiliation(s)
- Tao Lin
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University , Shanghai 200433, China
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48
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Jiang K, Zhang HX, Zou S, Cai WB. Electrocatalysis of formic acid on palladium and platinum surfaces: from fundamental mechanisms to fuel cell applications. Phys Chem Chem Phys 2014; 16:20360-76. [DOI: 10.1039/c4cp03151b] [Citation(s) in RCA: 249] [Impact Index Per Article: 24.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A brief overview is presented on recent progress in mechanistic studies of formic acid oxidation, synthesis of novel Pd- and Pt-based nanocatalysts and their practical applications in direct formic acid fuel cells.
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Affiliation(s)
- Kun Jiang
- Shanghai Key Laboratory for Molecular Catalysis and Innovative Materials
- Department of Chemistry
- Fudan University
- Shanghai 200433, China
| | - Han-Xuan Zhang
- Shanghai Key Laboratory for Molecular Catalysis and Innovative Materials
- Department of Chemistry
- Fudan University
- Shanghai 200433, China
| | - Shouzhong Zou
- Department of Chemistry and Biochemistry
- Miami University
- Oxford, USA
| | - Wen-Bin Cai
- Shanghai Key Laboratory for Molecular Catalysis and Innovative Materials
- Department of Chemistry
- Fudan University
- Shanghai 200433, China
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49
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Yang YY, Zhang LN, Osawa M, Cai WB. Surface-Enhanced Infrared Spectroscopic Study of a CO-Covered Pt Electrode in Room-Temperature Ionic Liquid. J Phys Chem Lett 2013; 4:1582-1586. [PMID: 26282962 DOI: 10.1021/jz400657t] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
ATR-SEIRAS is extended for the first time to study potential-induced surface and interface structure variation of a CO-covered Pt electrode in a room-temperature ionic liquid of N-butyl-N-methyl-piperidinium bis((trifluoromethyl)sulfonyl)imide (or [Pip14][TNf2]). Owing to a wide effective potential window of [Pip14][TNf2], a gradual conversion from bridged COad (COB) to terminal COad (COL) is observed in response to positively going potentials, suggesting that [Pip14](+) may be involved in a strong electrostatic interaction with the COad. This site conversion enables the ratio of the apparent absorption coefficient of COL to that of COB to be determined. Also, the spectral results reveal the potential-dependent COad frequency variations as well as the potential-induced interfacial ionic reorientation and movement at the Pt/CO/[Pip14][TNf2] interface.
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Affiliation(s)
- Yao-Yue Yang
- †Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200433, China
| | - Li-Na Zhang
- †Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200433, China
| | - Masatoshi Osawa
- ‡Catalysis Research Center, Hokkaido University, Sapporo 001-0021, Japan
| | - Wen-Bin Cai
- †Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200433, China
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50
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Yang YY, Ren J, Zhang HX, Zhou ZY, Sun SG, Cai WB. Infrared spectroelectrochemical study of dissociation and oxidation of methanol at a palladium electrode in alkaline solution. Langmuir 2013; 29:1709-1716. [PMID: 23311730 DOI: 10.1021/la305141q] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The dissociative adsorption and electrooxidation of CH(3)OH at a Pd electrode in alkaline solution are investigated by using in situ infrared spectroscopy with both internal and external reflection modes. The former (ATR-SEIRAS) has a higher sensitivity of detecting surface species, and the latter (IRAS) can easily detect dissolved species trapped in a thin-layer-structured electrolyte. Real-time ATR-SEIRAS measurement indicates that CH(3)OH dissociates to CO(ad) species at a Pd electrode accompanied by a "dip" at open circuit potential, whereas deuterium-replaced CH(3)OH doesn't, suggesting that the breaking of the C-H bond is the rate-limiting step for the dissociative adsorption of CH(3)OH. Potential-dependent ATR-SEIRAS and IRAS measurements indicate that CH(3)OH is electrooxidized to formate and/or (bi)carbonate, the relative concentrations of which depend on the potential applied. Specifically, at potentials negative of ca. -0.15 V (vs Ag/AgCl), formate is the predominant product and (bi)carbonate (or CO(2) in the thin-layer structure of IRAS) is more favorable at potentials from -0.15 to 0.10 V. Further oxidation of the CO(ad) intermediate species arising from CH(3)OH dissociation is involved in forming (bi)carbonate at potentials above -0.15 V. Although the partial transformation from interfacial formate to (bi)carbonate may be justified, no bridge-bonded formate species can be detected over the potential range under investigation.
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Affiliation(s)
- Yao-Yue Yang
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Department of Chemistry, Fudan University, Shanghai 200433, China
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