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Luo X, Yuan P, Xiao H, Li S, Luo J, Li J, Lai W, Chen Y, Li D. Effects of Intrinsic Defects in Pt-Based Carbon Supports on Alkaline Hydrogen Evolution Reaction. ACS APPLIED MATERIALS & INTERFACES 2024; 16:26044-26056. [PMID: 38717586 DOI: 10.1021/acsami.4c00690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2024]
Abstract
Carbon material has widely been utilized in the synthesis of efficient carbon-supported Pt (Pt/C) catalysts, in which the structural properties greatly influence the electrocatalytic performances of Pt/C catalysts. However, the effects of intrinsic defects in carbon supports on the performance of the alkaline hydrogen evolution reaction (HER) have not been systematically investigated. Herein, porous carbon supports with different degrees of intrinsic defects were prepared by a simple template-assisted strategy, and the resulting samples were systematically studied by various analytical methods. The results suggested that the presence of abundant intrinsic defects (vacancy and topological defects) in the carbon support was advantageous in terms of favoring the dispersion and anchoring of Pt species, promoting electron transfer between Pt atoms and the carbon support, and tuning the electronic states of Pt species. These features improved the HER performance of Pt/C catalysts. Compared to the nontemplate-assisted carbon-supported Pt catalyst (Pt/NTC) with an overpotential of 178 mV, the optimized template-assisted carbon-supported Pt catalyst (Pt/TC) exhibited a lower overpotential of 58 mV at 10 mA cm-2. Besides, the Pt/TC catalyst displayed better HER durability than the Pt/NTC catalyst owing to its strong metal-support interaction. The DFT calculations confirmed the important role played by intrinsic defects (vacancy and topological defects) in stabilizing Pt atoms, with Pt-C3 coordination identified as the most favorable structure for improving the HER performance of Pt. Overall, novel insights on the significant contribution of intrinsic defects in porous carbon supports on the HER performances of Pt/C catalysts were provided, useful for future design and fabrication of advanced carbon-supported catalysts or other carbon-based electrode materials.
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Affiliation(s)
- Xianyou Luo
- Guangdong Key Laboratory for Hydrogen Energy Technologies, School of Materials Science and Hydrogen Energy, Foshan University, Foshan 528000, China
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan Provincial Key Laboratory of Research on Utilization of Si-Zr-Ti Resources, School of Materials Science and Engineering, Hainan University, Haikou 570228, China
| | - Ping Yuan
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan Provincial Key Laboratory of Research on Utilization of Si-Zr-Ti Resources, School of Materials Science and Engineering, Hainan University, Haikou 570228, China
| | - Haoming Xiao
- Guangdong Key Laboratory for Hydrogen Energy Technologies, School of Materials Science and Hydrogen Energy, Foshan University, Foshan 528000, China
| | - Shengwei Li
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan Provincial Key Laboratory of Research on Utilization of Si-Zr-Ti Resources, School of Materials Science and Engineering, Hainan University, Haikou 570228, China
| | - Junhui Luo
- Guangdong Key Laboratory for Hydrogen Energy Technologies, School of Materials Science and Hydrogen Energy, Foshan University, Foshan 528000, China
| | - Junyi Li
- Guangdong Key Laboratory for Hydrogen Energy Technologies, School of Materials Science and Hydrogen Energy, Foshan University, Foshan 528000, China
| | - Wende Lai
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan Provincial Key Laboratory of Research on Utilization of Si-Zr-Ti Resources, School of Materials Science and Engineering, Hainan University, Haikou 570228, China
| | - Yong Chen
- Guangdong Key Laboratory for Hydrogen Energy Technologies, School of Materials Science and Hydrogen Energy, Foshan University, Foshan 528000, China
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan Provincial Key Laboratory of Research on Utilization of Si-Zr-Ti Resources, School of Materials Science and Engineering, Hainan University, Haikou 570228, China
| | - De Li
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan Provincial Key Laboratory of Research on Utilization of Si-Zr-Ti Resources, School of Materials Science and Engineering, Hainan University, Haikou 570228, China
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Hedman D, McLean B, Bichara C, Maruyama S, Larsson JA, Ding F. Dynamics of growing carbon nanotube interfaces probed by machine learning-enabled molecular simulations. Nat Commun 2024; 15:4076. [PMID: 38744824 PMCID: PMC11094095 DOI: 10.1038/s41467-024-47999-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Accepted: 04/15/2024] [Indexed: 05/16/2024] Open
Abstract
Carbon nanotubes (CNTs), hollow cylinders of carbon, hold great promise for advanced technologies, provided their structure remains uniform throughout their length. Their growth takes place at high temperatures across a tube-catalyst interface. Structural defects formed during growth alter CNT properties. These defects are believed to form and heal at the tube-catalyst interface but an understanding of these mechanisms at the atomic-level is lacking. Here we present DeepCNT-22, a machine learning force field (MLFF) to drive molecular dynamics simulations through which we unveil the mechanisms of CNT formation, from nucleation to growth including defect formation and healing. We find the tube-catalyst interface to be highly dynamic, with large fluctuations in the chiral structure of the CNT-edge. This does not support continuous spiral growth as a general mechanism, instead, at these growth conditions, the growing tube edge exhibits significant configurational entropy. We demonstrate that defects form stochastically at the tube-catalyst interface, but under low growth rates and high temperatures, these heal before becoming incorporated in the tube wall, allowing CNTs to grow defect-free to seemingly unlimited lengths. These insights, not readily available through experiments, demonstrate the remarkable power of MLFF-driven simulations and fill long-standing gaps in our understanding of CNT growth mechanisms.
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Affiliation(s)
- Daniel Hedman
- Center for Multidimensional Carbon Materials (CMCM), Institute for Basic Science (IBS), Ulsan, 44919, Republic of Korea.
| | - Ben McLean
- Center for Multidimensional Carbon Materials (CMCM), Institute for Basic Science (IBS), Ulsan, 44919, Republic of Korea
- School of Engineering, RMIT University, Victoria, 3001, Australia
| | | | - Shigeo Maruyama
- Department of Mechanical Engineering, The University of Tokyo, Tokyo, 113-8656, Japan
| | - J Andreas Larsson
- Applied Physics, Division of Materials Science, Department of Engineering Sciences and Mathematics, Luleå University of Technology, Luleå, 971 87, Sweden.
| | - Feng Ding
- Center for Multidimensional Carbon Materials (CMCM), Institute for Basic Science (IBS), Ulsan, 44919, Republic of Korea.
- Department of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea.
- Faculty of Materials Science and Engineering, Institute of Technology for Carbon Neutrality, Shenzhen Institute of Advanced Technology Chinese Academy of Sciences, Shenzhen, 518055, China.
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Lei YJ, Zhao L, Lai WH, Huang Z, Sun B, Jaumaux P, Sun K, Wang YX, Wang G. Electrochemical coupling in subnanometer pores/channels for rechargeable batteries. Chem Soc Rev 2024; 53:3829-3895. [PMID: 38436202 DOI: 10.1039/d3cs01043k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/05/2024]
Abstract
Subnanometer pores/channels (SNPCs) play crucial roles in regulating electrochemical redox reactions for rechargeable batteries. The delicately designed and tailored porous structure of SNPCs not only provides ample space for ion storage but also facilitates efficient ion diffusion within the electrodes in batteries, which can greatly improve the electrochemical performance. However, due to current technological limitations, it is challenging to synthesize and control the quality, storage, and transport of nanopores at the subnanometer scale, as well as to understand the relationship between SNPCs and performances. In this review, we systematically classify and summarize materials with SNPCs from a structural perspective, dividing them into one-dimensional (1D) SNPCs, two-dimensional (2D) SNPCs, and three-dimensional (3D) SNPCs. We also unveil the unique physicochemical properties of SNPCs and analyse electrochemical couplings in SNPCs for rechargeable batteries, including cathodes, anodes, electrolytes, and functional materials. Finally, we discuss the challenges that SNPCs may face in electrochemical reactions in batteries and propose future research directions.
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Affiliation(s)
- Yao-Jie Lei
- Centre for Clean Energy Technology, School of Mathematical and Physical Sciences, Faculty of Science, University of Technology Sydney, Sydney, NSW 2007, Australia.
| | - Lingfei Zhao
- Institute for Superconducting & Electronic Materials, Australian Institute of Innovative Materials, University of Wollongong, Innovation Campus, Squires Way, North Wollongong, NSW 2500, Australia
| | - Wei-Hong Lai
- Institute for Superconducting & Electronic Materials, Australian Institute of Innovative Materials, University of Wollongong, Innovation Campus, Squires Way, North Wollongong, NSW 2500, Australia
| | - Zefu Huang
- Centre for Clean Energy Technology, School of Mathematical and Physical Sciences, Faculty of Science, University of Technology Sydney, Sydney, NSW 2007, Australia.
| | - Bing Sun
- Centre for Clean Energy Technology, School of Mathematical and Physical Sciences, Faculty of Science, University of Technology Sydney, Sydney, NSW 2007, Australia.
| | - Pauline Jaumaux
- Centre for Clean Energy Technology, School of Mathematical and Physical Sciences, Faculty of Science, University of Technology Sydney, Sydney, NSW 2007, Australia.
| | - Kening Sun
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 10081, P. R. China.
| | - Yun-Xiao Wang
- Institute of Energy Materials Science (IEMS), University of Shanghai for Science and Technology, 516 Jungong Road, Shanghai, 200093, P. R. China.
| | - Guoxiu Wang
- Centre for Clean Energy Technology, School of Mathematical and Physical Sciences, Faculty of Science, University of Technology Sydney, Sydney, NSW 2007, Australia.
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Krasley A, Li E, Galeana JM, Bulumulla C, Beyene AG, Demirer GS. Carbon Nanomaterial Fluorescent Probes and Their Biological Applications. Chem Rev 2024; 124:3085-3185. [PMID: 38478064 PMCID: PMC10979413 DOI: 10.1021/acs.chemrev.3c00581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 02/01/2024] [Accepted: 02/09/2024] [Indexed: 03/28/2024]
Abstract
Fluorescent carbon nanomaterials have broadly useful chemical and photophysical attributes that are conducive to applications in biology. In this review, we focus on materials whose photophysics allow for the use of these materials in biomedical and environmental applications, with emphasis on imaging, biosensing, and cargo delivery. The review focuses primarily on graphitic carbon nanomaterials including graphene and its derivatives, carbon nanotubes, as well as carbon dots and carbon nanohoops. Recent advances in and future prospects of these fields are discussed at depth, and where appropriate, references to reviews pertaining to older literature are provided.
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Affiliation(s)
- Andrew
T. Krasley
- Janelia
Research Campus, Howard Hughes Medical Institute, 19700 Helix Drive, Ashburn, Virginia 20147, United States
| | - Eugene Li
- Division
of Chemistry and Chemical Engineering, California
Institute of Technology, 1200 E. California Boulevard, Pasadena, California 91125, United States
| | - Jesus M. Galeana
- Division
of Chemistry and Chemical Engineering, California
Institute of Technology, 1200 E. California Boulevard, Pasadena, California 91125, United States
| | - Chandima Bulumulla
- Janelia
Research Campus, Howard Hughes Medical Institute, 19700 Helix Drive, Ashburn, Virginia 20147, United States
| | - Abraham G. Beyene
- Janelia
Research Campus, Howard Hughes Medical Institute, 19700 Helix Drive, Ashburn, Virginia 20147, United States
| | - Gozde S. Demirer
- Division
of Chemistry and Chemical Engineering, California
Institute of Technology, 1200 E. California Boulevard, Pasadena, California 91125, United States
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5
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Suzuki H, Kametaka J, Nakahori S, Tanaka Y, Iwahara M, Lin H, Manzhos S, Kyaw AKK, Nishikawa T, Hayashi Y. N-DMBI Doping of Carbon Nanotube Yarns for Achieving High n-Type Thermoelectric Power Factor and Figure of Merit. SMALL METHODS 2024:e2301387. [PMID: 38470210 DOI: 10.1002/smtd.202301387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 02/05/2024] [Indexed: 03/13/2024]
Abstract
The application of carbon nanotube (CNT) yarns as thermoelectric materials for harvesting energy from low-grade waste heat including that generated by the human body, is attracting considerable attention. However, the lack of efficient n-type CNT yarns hinders their practical implementation in thermoelectric devices. This study reports efficient n-doping of CNT yarns, employing 4-(1, 3-dimethyl-2, 3-dihydro-1H-benzimidazole-2-yl) phenyl) dimethylamine (N-DMBI) in alternative to conventional n-dopants, with o-dichlorobenzene emerging as the optimal solvent. The small molecular size of N-DMBI enables highly efficient doping within a remarkably short duration (10 s) while ensuring prolonged stability in air and at high temperature (150 °C). Furthermore, Joule annealing of the yarns significantly improves the n-doping efficiency. Consequently, thermoelectric power factors (PFs) of 2800, 2390, and 1534 µW m-1 K-2 are achieved at 200, 150, and 30 °C, respectively. The intercalation of N-DMBI molecules significantly suppresses the thermal conductivity, resulting in the high figure of merit (ZT) of 1.69×10-2 at 100 °C. Additionally, a π-type thermoelectric module is successfully demonstrated incorporating both p- and n-doped CNT yarns. This study offers an efficient doping strategy for achieving CNT yarns with high thermoelectric performance, contributing to the realization of lightweight and mechanically flexible CNT-based thermoelectric devices.
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Affiliation(s)
- Hiroo Suzuki
- Graduate School of Environmental, Life, Natural Science and Technology, Okayama University, Okayama, 700-8530, Japan
- Faculty of Environmental, Life, Natural Science and Technology, Okayama University, Okayama, 700-8530, Japan
| | - Jun Kametaka
- Graduate School of Environmental, Life, Natural Science and Technology, Okayama University, Okayama, 700-8530, Japan
| | - Shinya Nakahori
- Graduate School of Environmental, Life, Natural Science and Technology, Okayama University, Okayama, 700-8530, Japan
| | - Yuichiro Tanaka
- Graduate School of Environmental, Life, Natural Science and Technology, Okayama University, Okayama, 700-8530, Japan
| | - Mizuki Iwahara
- Graduate School of Environmental, Life, Natural Science and Technology, Okayama University, Okayama, 700-8530, Japan
| | - Haolu Lin
- Graduate School of Environmental, Life, Natural Science and Technology, Okayama University, Okayama, 700-8530, Japan
| | - Sergei Manzhos
- School of Materials and Chemical Technology, Tokyo Institute of Technology, Ookayama 2-12-1, Meguro-ku, Tokyo, 152-8552, Japan
| | - Aung Ko Ko Kyaw
- Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, 518055, P. R. China
| | - Takeshi Nishikawa
- Graduate School of Environmental, Life, Natural Science and Technology, Okayama University, Okayama, 700-8530, Japan
- Faculty of Environmental, Life, Natural Science and Technology, Okayama University, Okayama, 700-8530, Japan
| | - Yasuhiko Hayashi
- Graduate School of Environmental, Life, Natural Science and Technology, Okayama University, Okayama, 700-8530, Japan
- Faculty of Environmental, Life, Natural Science and Technology, Okayama University, Okayama, 700-8530, Japan
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6
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Ardeshana B, Jani U, Patel A. Impact of point vacancy defects on vibrational behaviour of three-walled carbon nanotubes. J Mol Model 2023; 29:214. [PMID: 37347314 DOI: 10.1007/s00894-023-05621-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Accepted: 06/09/2023] [Indexed: 06/23/2023]
Abstract
CONTEXT Through experimental observations and reports, various challenges have been identified in carbon nanotubes (CNT), including Stone Wales (SW) flaws and position flaws. Among these imperfections, point vacancies are the most prevalent in the CNT lattice. However, there is currently no established method for detecting these issues, and the influence of these flaws on the vibrational properties of three-walled carbon nanotubes (TWCNTs) remains uncertain. This research paper introduces a novel approach that utilizes vibrational analysis to detect flaws in TWCNTs. By conducting the first investigation into the impact of point vacancies on the vibrational modal frequencies of TWCNTs, our study bridges these knowledge gaps. METHODS This study examines the impact of defect quantity on various types of TWCNTs and investigates the vibrational properties of TWCNTs with point vacancies using a molecular structural mechanics technique. A total of 432 TWCNT models were simulated using molecular structural mechanics (MSM), and their modes were identified through finite element (FE) analysis. The fundamental vibration's natural frequency in TWCNTs with defects was then determined. The findings indicate that the depth of the mode shape is influenced by the TWCNTs' diameter, the extent of point vacancy defects, and the boundary condition. It was observed that as the number of vacancy defects increases from 0 to 4%, the natural frequency decreases. The study also establishes the order of TWCNTs with the highest natural vibrational frequency at 0%-point vacancy and [Formula: see text] a given attached mass, which follows the sequence of chiral, armchair, and zigzag TWCNTs.
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Affiliation(s)
- Bhavik Ardeshana
- Mechatronics Department, G H Patel College of Engineering & Technology, Gujarat-388120, Vallabh-Vidyanagar, India
| | - Umang Jani
- Mechatronics Department, G H Patel College of Engineering & Technology, Gujarat-388120, Vallabh-Vidyanagar, India
| | - Ajay Patel
- Mechatronics Department, G H Patel College of Engineering & Technology, Gujarat-388120, Vallabh-Vidyanagar, India.
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7
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Marris D, Sarvaharman S, Giuggioli L. Exact spatiotemporal dynamics of lattice random walks in hexagonal and honeycomb domains. Phys Rev E 2023; 107:054139. [PMID: 37329046 DOI: 10.1103/physreve.107.054139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Accepted: 05/06/2023] [Indexed: 06/18/2023]
Abstract
A variety of transport processes in natural and man-made systems are intrinsically random. To model their stochasticity, lattice random walks have been employed for a long time, mainly by considering Cartesian lattices. However, in many applications in bounded space the geometry of the domain may have profound effects on the dynamics and ought to be accounted for. We consider here the cases of the six-neighbor (hexagonal) and three-neighbor (honeycomb) lattices, which are utilized in models ranging from adatoms diffusing in metals and excitations diffusing on single-walled carbon nanotubes to animal foraging strategy and the formation of territories in scent-marking organisms. In these and other examples, the main theoretical tool to study the dynamics of lattice random walks in hexagonal geometries has been via simulations. Analytic representations have in most cases been inaccessible, in particular in bounded hexagons, given the complicated "zigzag" boundary conditions that a walker is subject to. Here we generalize the method of images to hexagonal geometries and obtain closed-form expressions for the occupation probability, the so-called propagator, for lattice random walks both on hexagonal and honeycomb lattices with periodic, reflective, and absorbing boundary conditions. In the periodic case, we identify two possible choices of image placement and their corresponding propagators. Using them, we construct the exact propagators for the other boundary conditions, and we derive transport-related statistical quantities such as first-passage probabilities to one or multiple targets and their means, elucidating the effect of the boundary condition on transport properties.
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Affiliation(s)
- Daniel Marris
- Department of Engineering Mathematics, University of Bristol, Bristol BS8 1UB, United Kingdom
| | - Seeralan Sarvaharman
- Department of Engineering Mathematics, University of Bristol, Bristol BS8 1UB, United Kingdom
| | - Luca Giuggioli
- Bristol Centre for Complexity Sciences and Department of Engineering Mathematics, University of Bristol, Bristol BS8 1UB, United Kingdom
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8
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Omoto Y, Morita H, Sato Y, Nishida T, Motomiya K, Katsui H, Goto T, Sato Y. Are Non-Six-Membered Ring Defects Formed in Single-Walled Carbon Nanotubes Treated by a Fluorination-Defluorination Process? NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:1086. [PMID: 36985980 PMCID: PMC10056250 DOI: 10.3390/nano13061086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/04/2023] [Revised: 03/07/2023] [Accepted: 03/15/2023] [Indexed: 06/18/2023]
Abstract
Single-walled carbon nanotubes (SWCNTs) modified by introducing non-six-membered ring defects, such as five- and seven-membered rings, have attracted considerable attention because their conductivity is enhanced by increasing the electronic density of states at the Fermi energy level. However, no preparation method exists to efficiently introduce non-six-membered ring defects into SWCNTs. Herein, we attempt to introduce non-six-membered ring defects into SWCNTs by defect rearrangement of the nanotube framework using a fluorination-defluorination process. Defect-introduced SWCNTs were fabricated from SWCNTs fluorinated at 25 °C for different reaction times. Their structures were evaluated, and their conductivities were measured by operating a temperature program. Structural analysis of the defect-induced SWCNTs using X-ray photoelectron spectroscopy, Raman spectroscopy, high-resolution transmission electron microscopy, and visible-near-infrared spectroscopy did not reveal the presence of non-six-membered ring defects in the SWCNTs but indicated the introduction of vacancy defects. Meanwhile, conductivity measurements performed by operating a temperature program showed that the defluorinated SWCNTs prepared from SWCNTs fluorinated for 3 min (deF-RT-3m) exhibited decreased conductivity owing to the adsorption of water molecules to non-six-membered ring defects, thereby implying the possibility of non-six-membered ring defects being introduced into deF-RT-3m.
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Affiliation(s)
- Yoji Omoto
- Graduate School of Environmental Studies, Tohoku University, Aoba 6-6-20, Aramaki, Aoba-ku, Sendai 980-8579, Japan
| | - Hiromu Morita
- Graduate School of Environmental Studies, Tohoku University, Aoba 6-6-20, Aramaki, Aoba-ku, Sendai 980-8579, Japan
| | - Yoshinori Sato
- STELLA CHEMIFA CORPORATION, 7-227, Kaisan-cho, Sakai-ku, Sakai 595-0982, Japan
| | - Tetsuo Nishida
- STELLA CHEMIFA CORPORATION, 7-227, Kaisan-cho, Sakai-ku, Sakai 595-0982, Japan
| | - Kenichi Motomiya
- Graduate School of Environmental Studies, Tohoku University, Aoba 6-6-20, Aramaki, Aoba-ku, Sendai 980-8579, Japan
| | - Hirokazu Katsui
- Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan
| | - Takashi Goto
- Extreme Energy-Density Research Institute, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka 940-2188, Japan
- New Industry Creation Hatchery Center (NICHe), Tohoku University, Aoba 6–6-10, Aramaki, Aoba-ku, Sendai 980-8579, Japan
| | - Yoshinori Sato
- Graduate School of Environmental Studies, Tohoku University, Aoba 6-6-20, Aramaki, Aoba-ku, Sendai 980-8579, Japan
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9
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Castro KPR, Colombo RNP, Iost RM, da Silva BGR, Crespilho FN. Low-dimensionality carbon-based biosensors: the new era of emerging technologies in bioanalytical chemistry. Anal Bioanal Chem 2023:10.1007/s00216-023-04578-x. [PMID: 36757464 PMCID: PMC9909134 DOI: 10.1007/s00216-023-04578-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 01/26/2023] [Accepted: 01/30/2023] [Indexed: 02/10/2023]
Abstract
Since the last decade, carbon nanomaterials have had a notable impact on different fields such as bioimaging, drug delivery, artificial tissue engineering, and biosensors. This is due to their good compatibility toward a wide range of chemical to biological molecules, low toxicity, and tunable properties. Especially for biosensor technology, the characteristic features of each dimensionality of carbon-based materials may influence the performance and viability of their use. Surface area, porous network, hybridization, functionalization, synthesis route, the combination of dimensionalities, purity levels, and the mechanisms underlying carbon nanomaterial interactions influence their applications in bioanalytical chemistry. Efforts are being made to fully understand how nanomaterials can influence biological interactions, to develop commercially viable biosensors, and to gain knowledge on the biomolecular processes associated with carbon. Here, we present a comprehensive review highlighting the characteristic features of the dimensionality of carbon-based materials in biosensing.
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Affiliation(s)
- Karla P. R. Castro
- grid.11899.380000 0004 1937 0722São Carlos Institute of Chemistry, University of São Paulo, Av. Trabalhador São Carlense, 400 Parque Arnold Schimidt, São Carlos, SP 13566-590 Brazil
| | - Rafael N. P. Colombo
- grid.11899.380000 0004 1937 0722São Carlos Institute of Chemistry, University of São Paulo, Av. Trabalhador São Carlense, 400 Parque Arnold Schimidt, São Carlos, SP 13566-590 Brazil
| | - Rodrigo M. Iost
- grid.11899.380000 0004 1937 0722São Carlos Institute of Chemistry, University of São Paulo, Av. Trabalhador São Carlense, 400 Parque Arnold Schimidt, São Carlos, SP 13566-590 Brazil
| | - Beatriz G. R. da Silva
- grid.11899.380000 0004 1937 0722São Carlos Institute of Chemistry, University of São Paulo, Av. Trabalhador São Carlense, 400 Parque Arnold Schimidt, São Carlos, SP 13566-590 Brazil
| | - Frank N. Crespilho
- grid.11899.380000 0004 1937 0722São Carlos Institute of Chemistry, University of São Paulo, Av. Trabalhador São Carlense, 400 Parque Arnold Schimidt, São Carlos, SP 13566-590 Brazil
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10
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Jiang Q, Wang F, Li R, Li B, Wei N, Gao N, Xu H, Zhao S, Huang Y, Wang B, Zhang W, Wu X, Zhang S, Zhao Y, Shi E, Zhang R. Synthesis of Ultralong Carbon Nanotubes with Ultrahigh Yields. NANO LETTERS 2023; 23:523-532. [PMID: 36622363 DOI: 10.1021/acs.nanolett.2c03858] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Ultralong carbon nanotubes (CNTs) are in huge demand in many cutting-edge fields due to their macroscale lengths, perfect structures, and extraordinary properties, while their practical application is limited by the difficulties in their mass production. Herein, we report the synthesis of ultralong CNTs with a dramatically increased yield by a simple but efficient substrate interception and direction strategy (SIDS), which couples the advantages of floating-catalyst chemical vapor deposition with the flying-kite-like growth mechanism of ultralong CNTs. The SIDS-assisted approach prominently improves the catalyst utilization and significantly increases the yield. The areal density of the ultralong CNT arrays with length of over 1 cm reached a record-breaking value of ∼6700 CNTs mm-1, which is 2-3 orders of magnitude higher than the previously reported values obtained by traditional methods. The SIDS provides a solution for synthesizing high-quality ultralong CNTs with high yields, laying the foundation for their mass production.
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Affiliation(s)
- Qinyuan Jiang
- Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing 100084, People's Republic of China
| | - Fei Wang
- Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing 100084, People's Republic of China
| | - Run Li
- Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing 100084, People's Republic of China
| | - Baini Li
- Key Laboratory of 3D Micro/Nano Fabrication and Characterization of Zhejiang Province, School of Engineering, Westlake University, Hangzhou 310024, People's Republic of China
| | - Nan Wei
- Research Center for Carbon-based Electronics and Department of Electronics, Peking University, Beijing 100871, People's Republic of China
| | - Ningfei Gao
- Beijing HuaTanYuanXin Electronics Technology Ltd. Co., Beijing 101399, People's Republic of China
| | - Haitao Xu
- Beijing HuaTanYuanXin Electronics Technology Ltd. Co., Beijing 101399, People's Republic of China
- Beijing Institute of Carbon-based Integrated Circuits, Beijing 100195, People's Republic of China
| | - Siming Zhao
- Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing 100084, People's Republic of China
| | - Ya Huang
- Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing 100084, People's Republic of China
| | - Baoshun Wang
- Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing 100084, People's Republic of China
| | - Wenshuo Zhang
- Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing 100084, People's Republic of China
| | - Xueke Wu
- Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing 100084, People's Republic of China
| | - Shiliang Zhang
- Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing 100084, People's Republic of China
| | - Yanlong Zhao
- Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing 100084, People's Republic of China
| | - Enzheng Shi
- Key Laboratory of 3D Micro/Nano Fabrication and Characterization of Zhejiang Province, School of Engineering, Westlake University, Hangzhou 310024, People's Republic of China
| | - Rufan Zhang
- Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing 100084, People's Republic of China
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11
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Samira R, Cohen A, Patolsky F, Lachman N. Cyclic Buckling Characterization of an Individual MWCNT Using Quantitative In Situ TEM Axial Compression. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:301. [PMID: 36678054 PMCID: PMC9865386 DOI: 10.3390/nano13020301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 01/06/2023] [Accepted: 01/07/2023] [Indexed: 06/17/2023]
Abstract
Carbon nanotubes (CNTs) are extremely conductive and flexible, making them ideal for applications such as flexible electronics and nanoelectromechanical systems. However, in order to properly apply them in such devices, their long-term durability must be assessed. In the present study, we demonstrate cyclic loading of a thick MWCNT (175 nm) under axial compression, observed in situ under a transmission electron microscope (TEM). The force was applied via controlled displacement, while real-time TEM videos of the deformation process were gathered to produce the morphological data. The in situ observations combined with force-displacement curves revealed the onset of buckling instabilities, and the elastic limits of the tube were assessed. The MWCNT retained its original structure even after 68 loading-unloading cycles, despite observed clues for structural distortions. The stiffness of the tube, calculated after each loading cycle, was in a 0.15 to 0.28 TPa range-comparable to the literature, which further validates the measurement set-up. These in situ tests demonstrate the resilience of CNTs to fatigue which can be correlated with the CNTs' structure. Such correlations can help tailoring CNTs' properties to specific applications.
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Affiliation(s)
- Raz Samira
- Department of Materials Science and Engineering, The Iby and Aladar Fleischman Faculty of Engineering, Tel Aviv University, Tel Aviv 69978, Israel
| | - Adam Cohen
- Department of Materials Science and Engineering, The Iby and Aladar Fleischman Faculty of Engineering, Tel Aviv University, Tel Aviv 69978, Israel
| | - Fernando Patolsky
- Department of Materials Science and Engineering, The Iby and Aladar Fleischman Faculty of Engineering, Tel Aviv University, Tel Aviv 69978, Israel
- School of Chemistry, Faculty of Exact Sciences, Tel Aviv University, Tel Aviv 69978, Israel
| | - Noa Lachman
- Department of Materials Science and Engineering, The Iby and Aladar Fleischman Faculty of Engineering, Tel Aviv University, Tel Aviv 69978, Israel
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12
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Hannon A, Seames W, Li J. Hybrid Carbon Nanotubes/Gold Nanoparticles Composites for Trace Nitric Oxide Detection over a Wide Range of Humidity. SENSORS (BASEL, SWITZERLAND) 2022; 22:s22197581. [PMID: 36236680 PMCID: PMC9572011 DOI: 10.3390/s22197581] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 09/21/2022] [Accepted: 09/28/2022] [Indexed: 05/17/2023]
Abstract
Composites of functionalized single walled carbon nanotubes (SWCNTs) and gold nanoparticles (Au NPs) of ≈15 nm diameter were drop-cast on a printed circuit board (PCB) substrate equipped with interdigitated electrodes to make a hybrid thin film. Addition of Au NPs decorated the surface of SWCNTs networked films and acted as catalysts which resulted into an enhanced sensitivity and low ppb concentration detection limit. The compositions of the film were characterized by scanning electron microscope (SEM). SWCNTs clusters were loaded with various amount of Au NPs ranging from 1-10% (by weight) and their effect on Nitric oxide (NO) sensitivity was studied and optimized. Further, the optimized composite films were tested in both air and nitrogen environments and as well as over a wide relative humidity range (0-97%). Sensors were also tested for the selectivity by exposing to various gases such as nitrous oxide, ammonia, carbon monoxide, sulfur dioxide and acetone. Sensitivity to NO was found much higher than the other tested gases. The advantage of this sensor is that it is sensitive to NO at low ppb level (10 ppb) with estimated response time within 10 s and recovery time around 1 min, and has excellent reproducibility from sensor to sensor and works within the wide range of relative humidity (0-97%).
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Affiliation(s)
- Ami Hannon
- KBR Wyle Inc. at NASA Ames Research Center, Moffett Field, CA 94035, USA
- Department of Chemical Engineering, University of North Dakota, Grand Forks, ND 58201, USA
| | - Wayne Seames
- Department of Chemical Engineering, University of North Dakota, Grand Forks, ND 58201, USA
| | - Jing Li
- NASA Ames Research Center, Moffett Field, CA 94035, USA
- Correspondence: ; Tel.: +1-650-604-4352
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13
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Guo SY, Hou PX, Zhang F, Liu C, Cheng HM. Gas Sensors Based on Single-Wall Carbon Nanotubes. Molecules 2022; 27:molecules27175381. [PMID: 36080149 PMCID: PMC9458085 DOI: 10.3390/molecules27175381] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 08/21/2022] [Accepted: 08/21/2022] [Indexed: 11/16/2022] Open
Abstract
Single-wall carbon nanotubes (SWCNTs) have a high aspect ratio, large surface area, good stability and unique metallic or semiconducting electrical conductivity, they are therefore considered a promising candidate for the fabrication of flexible gas sensors that are expected to be used in the Internet of Things and various portable and wearable electronics. In this review, we first introduce the sensing mechanism of SWCNTs and the typical structure and key parameters of SWCNT-based gas sensors. We then summarize research progress on the design, fabrication, and performance of SWCNT-based gas sensors. Finally, the principles and possible approaches to further improving the performance of SWCNT-based gas sensors are discussed.
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Affiliation(s)
- Shu-Yu Guo
- School of Materials Science and Engineering, Northeastern University, Shenyang 110819, China
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
| | - Peng-Xiang Hou
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
- Correspondence: (P.-X.H.); (C.L.); (H.-M.C.)
| | - Feng Zhang
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
| | - Chang Liu
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
- Correspondence: (P.-X.H.); (C.L.); (H.-M.C.)
| | - Hui-Ming Cheng
- School of Materials Science and Engineering, Northeastern University, Shenyang 110819, China
- Correspondence: (P.-X.H.); (C.L.); (H.-M.C.)
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14
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Yang S, Zhang D, Liang R, Song Y, Shi J, Yang H, Liu A. Formation of core–shell structure from carbon nanotube and gold nanowire: a molecular dynamic simulation. J DISPER SCI TECHNOL 2022. [DOI: 10.1080/01932691.2020.1844744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Shengye Yang
- College of Mechanical and Vehicle Engineering, Linyi Univeristy, Linyi, Shandong, China
| | - Danhui Zhang
- College of Mechanical and Vehicle Engineering, Linyi Univeristy, Linyi, Shandong, China
| | - Ruquan Liang
- College of Mechanical and Vehicle Engineering, Linyi Univeristy, Linyi, Shandong, China
| | | | - Jianhui Shi
- College of Mechanical and Vehicle Engineering, Linyi Univeristy, Linyi, Shandong, China
| | - Houbo Yang
- College of Mechanical and Vehicle Engineering, Linyi Univeristy, Linyi, Shandong, China
| | - Anmin Liu
- School of Petroleum and Chemical Engineering, Dalian University of Technology, Panjin, China
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15
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Riyajuddin S, Pahuja M, Sachdeva PK, Azmi K, Kumar S, Afshan M, Ali F, Sultana J, Maruyama T, Bera C, Ghosh K. Super-Hydrophilic Leaflike Sn 4P 3 on the Porous Seamless Graphene-Carbon Nanotube Heterostructure as an Efficient Electrocatalyst for Solar-Driven Overall Water Splitting. ACS NANO 2022; 16:4861-4875. [PMID: 35188366 DOI: 10.1021/acsnano.2c00466] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Water splitting using renewable energy resources is an economic and green approach that is immensely enviable for the production of high-purity hydrogen fuel to resolve the currently alarming energy and environmental crisis. One of the effective routes to produce green fuel with the help of an integrated solar system is to develop a cost-effective, robust, and bifunctional electrocatalyst by complete water splitting. Herein, we report a superhydrophilic layered leaflike Sn4P3 on a graphene-carbon nanotube matrix which shows outstanding electrochemical performance in terms of low overpotential (hydrogen evolution reaction (HER), 62 mV@10 mA/cm2, and oxygen evolution reaction (OER), 169 mV@20 mA/cm2). The outstanding stability of HER at least for 15 days at a high applied current density of 400 mA/cm2 with a minimum loss of potential (1%) in acid medium infers its potential compatibility toward the industrial sector. Theoretical calculations indicate that the decoration of Sn4P3 on carbon nanotubes modulates the electronic structure by creating a higher density of state near Fermi energy. The catalyst also reveals an admirable overall water splitting performance by generating a low cell voltage of 1.482 V@10 mA/cm2 with a stability of at least 65 h without obvious degradation of potential in 1 M KOH. It exhibited unassisted solar energy-driven water splitting when coupled with a silicon solar cell by extracting a high stable photocurrent density of 8.89 mA/cm2 at least for 90 h with 100% retention that demonstrates a high solar-to-hydrogen conversion efficiency of ∼10.82%. The catalyst unveils a footprint for pure renewable fuel production toward carbon-free future green energy innovation.
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Affiliation(s)
- Sk Riyajuddin
- Institute of Nano Science & Technology, Knowledge City, Sector-81, SAS Nagar, 140306 Mohali, Punjab, India
| | - Mansi Pahuja
- Institute of Nano Science & Technology, Knowledge City, Sector-81, SAS Nagar, 140306 Mohali, Punjab, India
| | - Parrydeep Kaur Sachdeva
- Institute of Nano Science & Technology, Knowledge City, Sector-81, SAS Nagar, 140306 Mohali, Punjab, India
| | - Kashif Azmi
- Institute of Nano Science & Technology, Knowledge City, Sector-81, SAS Nagar, 140306 Mohali, Punjab, India
| | - Sushil Kumar
- Institute of Nano Science & Technology, Knowledge City, Sector-81, SAS Nagar, 140306 Mohali, Punjab, India
| | - Mohd Afshan
- Institute of Nano Science & Technology, Knowledge City, Sector-81, SAS Nagar, 140306 Mohali, Punjab, India
| | - Firdaus Ali
- Institute of Nano Science & Technology, Knowledge City, Sector-81, SAS Nagar, 140306 Mohali, Punjab, India
| | - Jenifar Sultana
- Institute of Nano Science & Technology, Knowledge City, Sector-81, SAS Nagar, 140306 Mohali, Punjab, India
| | - Takahiro Maruyama
- Department of Applied Chemistry, Meijo University, 1-501 Shiogamaguchi, Tempaku, Nagoya 468-8502, Japan
| | - Chandan Bera
- Institute of Nano Science & Technology, Knowledge City, Sector-81, SAS Nagar, 140306 Mohali, Punjab, India
| | - Kaushik Ghosh
- Institute of Nano Science & Technology, Knowledge City, Sector-81, SAS Nagar, 140306 Mohali, Punjab, India
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16
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Zhu R, Qi Y, Meng J. Novel nanomaterials based saturable absorbers for passive mode locked fiber laser at 1.5 μm. NANOTECHNOLOGY 2022; 33:182002. [PMID: 35051916 DOI: 10.1088/1361-6528/ac4d59] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Accepted: 01/20/2022] [Indexed: 06/14/2023]
Abstract
Compared with continuous wave lasers, ultrafast lasers have the advantages of ultra-short pulse width and ultra-high peak power, and have significant applications in optical communications, medical diagnostics, and precision machining. Saturable absorber (SA) technology is the most effective technique for the generation of ultra-fast lasers, which are based on artificial SAs and natural SAs. Among them, the semiconductor saturable absorber mirror has become the most commonly used form at present. Recently, basic research and application of nanomaterials such as carbon nanotubes (CNTs) and graphene have been developed rapidly. Researchers have found that nanomaterials exhibit extraordinary characteristics in ultrafast photonics, such as the low saturation intensity of CNTs, zero-band gap of graphene, and extremely high modulation depth of the topological insulator nano-films. Since graphene was first reported as an SA in 2009, many other nanomaterials have been successively explored, resulting in the rapid development of novel nanomaterial-based SAs. In this paper, we classified the nanomaterials used in SA mode-locking technology at 1.5μm and reviewed their research progress with a particular focus on nonlinear optical properties, integration strategies, and applications in the field of ultrafast photonics.
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Affiliation(s)
- Rui Zhu
- Center for Advanced Laser Technology, Hebei University of Technology, Tianjin 300401, People's Republic of China
- Hebei Key Laboratory of Advanced Laser Technology and Equipment, Tianjin 300401, People's Republic of China
- School of Electronic and Information Engineering, Hebei University of Technology, Tianjin 300401,People's Republic of China
| | - Yaoyao Qi
- Center for Advanced Laser Technology, Hebei University of Technology, Tianjin 300401, People's Republic of China
- Hebei Key Laboratory of Advanced Laser Technology and Equipment, Tianjin 300401, People's Republic of China
- School of Electronic and Information Engineering, Hebei University of Technology, Tianjin 300401,People's Republic of China
| | - Jianfei Meng
- Center for Advanced Laser Technology, Hebei University of Technology, Tianjin 300401, People's Republic of China
- Hebei Key Laboratory of Advanced Laser Technology and Equipment, Tianjin 300401, People's Republic of China
- School of Electronic and Information Engineering, Hebei University of Technology, Tianjin 300401,People's Republic of China
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17
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Chen T, Cai C, Zhang Y, Zhao Z, Zhang S, Wu C, Gong X, Hong J, Hu T. Interfacial
engineering of polydimethylsiloxane based dielectric elastomers with excellent electromechanical properties via incorporating polyphenol encapsulated multiwalled carbon nanotube. J Appl Polym Sci 2021. [DOI: 10.1002/app.52084] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Tao Chen
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Collaborative Innovation Center of Green Light‐weight Materials and Processing, and School of Materials and Chemical Engineering Hubei University of Technology Wuhan China
| | - Cheng Cai
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Collaborative Innovation Center of Green Light‐weight Materials and Processing, and School of Materials and Chemical Engineering Hubei University of Technology Wuhan China
| | - Yan‐ting Zhang
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Collaborative Innovation Center of Green Light‐weight Materials and Processing, and School of Materials and Chemical Engineering Hubei University of Technology Wuhan China
| | - Zeng Zhao
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Collaborative Innovation Center of Green Light‐weight Materials and Processing, and School of Materials and Chemical Engineering Hubei University of Technology Wuhan China
| | - Shu‐yan Zhang
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Collaborative Innovation Center of Green Light‐weight Materials and Processing, and School of Materials and Chemical Engineering Hubei University of Technology Wuhan China
| | - Chong‐gang Wu
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Collaborative Innovation Center of Green Light‐weight Materials and Processing, and School of Materials and Chemical Engineering Hubei University of Technology Wuhan China
| | - Xing‐hou Gong
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Collaborative Innovation Center of Green Light‐weight Materials and Processing, and School of Materials and Chemical Engineering Hubei University of Technology Wuhan China
| | - Jiang Hong
- Jiangsu JITRI Advanced Polymer Materials Research Institute Co., Ltd. Nanjing China
| | - Tao Hu
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Collaborative Innovation Center of Green Light‐weight Materials and Processing, and School of Materials and Chemical Engineering Hubei University of Technology Wuhan China
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18
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Badorrek J, Walter M. Computational study on noncovalent interactions between (n, n) single-walled carbon nanotubes and simple lignin model-compounds. J Comput Chem 2021; 43:340-348. [PMID: 34893979 DOI: 10.1002/jcc.26794] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Revised: 11/18/2021] [Accepted: 11/23/2021] [Indexed: 11/10/2022]
Abstract
Composites of carbon nanotubes (CNTs) and lignin are promising and potentially cheap precursors of-to this day-expensive carbon fibers. Since the control of the CNT-lignin interface is crucial to maximize fiber performance, it is imperative to understand the fundamental noncovalent interactions between lignin and CNT. In the present study a density functional theory study is conducted to investigate the fundamental noncovalent interaction strength between metallic (n, n) single-walled CNT (SWCNT) and simple lignin model molecules. In particular, the respective adsorption energies are used to gauge the strength of interaction classes (ππ interaction, CHπ hydrogen bonding and OH-related hydrogen bonding. From the data, substituent-dependent interaction trends as well as class- and curvature-dependent interaction trends are derived. Overall, we find that most of the interaction strength trends appear to be strongly influenced by geometry: flat orientation of the test molecules relative to the (n, n) SWCNT surface and small (n, n) SWCNT curvature-that is, large diameter enhances the CHπ and ππ interactions.
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Affiliation(s)
- Jan Badorrek
- Freiburger Materialforschungszentrum, Freiburg im Breisgau, Germany
| | - Michael Walter
- Freiburg Center for Interactive Materials and Bioinspired Technologies (FIT), Universität Freiburg, Freiburg im Breisgau, Germany.,Cluster of Excellence livMatS @ FIT, Freiburg im Breisgau, Germany.,Fraunhofer IWM, Freiburg im Breisgau, Germany
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19
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Huang Q, Ni S, Jiao M, Zhong X, Zhou G, Cheng HM. Aligned Carbon-Based Electrodes for Fast-Charging Batteries: A Review. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2007676. [PMID: 33870632 DOI: 10.1002/smll.202007676] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2020] [Revised: 12/29/2020] [Indexed: 06/12/2023]
Abstract
Fast-charging batteries have attracted great attention, and are anticipated to charge electrical vehicles and consumer electronics to full-capacity in several minutes. However, commercial electrode materials in batteries generally have a limited rate performance and are difficult to be used in fast-charging batteries. Designing electrodes with an aligned structure is an effective way to shorten the ion transport path and improve the rate performance of a battery. The excellent electronic conductivity of carbon-based electrodes is another key factor for increasing the rate capability of rechargeable batteries. Therefore, aligned carbon-based electrodes (ACBEs) can significantly improve the power density by combining the advantages of an aligned structure and carbon-based materials. In this review, the mechanism, advantages, and challenges of ACBEs for fast-charging batteries are evaluated, and then the design and preparation methods of ACBEs based on their different dimensions are summarized, and their applications in different batteries are illustrated. Finally, the future development of ACBEs for fast-charging batteries is considered.
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Affiliation(s)
- Qikai Huang
- Shenzhen Geim Graphene Center, Tsinghua-Berkeley Shenzhen Institute & Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, China
| | - Shuyan Ni
- Shenzhen Geim Graphene Center, Tsinghua-Berkeley Shenzhen Institute & Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, China
| | - Miaolun Jiao
- Shenzhen Geim Graphene Center, Tsinghua-Berkeley Shenzhen Institute & Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, China
| | - Xiongwei Zhong
- Shenzhen Geim Graphene Center, Tsinghua-Berkeley Shenzhen Institute & Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, China
| | - Guangmin Zhou
- Shenzhen Geim Graphene Center, Tsinghua-Berkeley Shenzhen Institute & Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, China
| | - Hui-Ming Cheng
- Shenzhen Geim Graphene Center, Tsinghua-Berkeley Shenzhen Institute & Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, China
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, China
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20
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Nabi R, Tiwari RK, Rajaraman G. In silico strategy to boost stability, axiality, and barrier heights in dysprocenium SIMs via SWCNT encapsulation. Chem Commun (Camb) 2021; 57:11350-11353. [PMID: 34643193 DOI: 10.1039/d1cc03434k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Detailed ab initio CASSCF calculations coupled with periodic DFT studies on a series of [Dy(Cp)2]+ molecules encapsulated in a single-wall carbon nanotube found that encapsulation offers stability to these fragile molecules and also significantly enhances the Ueff values. Most importantly, this encapsulation suppresses the key vibrations responsible for reducing the blocking temperature, offering a hitherto unknown strategy for a new generation of SIM-based devices.
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Affiliation(s)
- Rizwan Nabi
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India.
| | - Rupesh Kumar Tiwari
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India.
| | - Gopalan Rajaraman
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India.
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21
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Lee S, Nam JS, Han J, Zhang Q, Kauppinen EI, Jeon I. Carbon Nanotube Mask Filters and Their Hydrophobic Barrier and Hyperthermic Antiviral Effects on SARS-CoV-2. ACS APPLIED NANO MATERIALS 2021; 4:8135-8144. [PMID: 37556284 PMCID: PMC8315256 DOI: 10.1021/acsanm.1c01386] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Accepted: 07/13/2021] [Indexed: 05/12/2023]
Abstract
Carbon nanotube face mask filters have strong and uniform hydrophobicity, high durability, and high thermal conductivity and exhibit excellent barrier and antiviral effects against SARS-CoV-2. The nanocarbon filter functions as a superior barrier compared to those in conventional masks owing to the stronger, more uniform, and more durable hydrophobic nature of the carbon nanotubes. A tightly knit carbon nanotube network has a pore size smaller than that of the average coronavirus; nevertheless, the breathability is equal to that of the conventional polypropylene filter. The exceptional thermal conductivity of carbon nanotubes transpires hyperthermic antiviral effects, which offers stronger protection against the virus, as well as reusability. The facile processability, low cost, and light weight of the aerosol-synthesized carbon nanotube filter warrants its viability, reinforcing the fight against the COVID-19 pandemic.
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Affiliation(s)
- Sangsu Lee
- Department of Chemistry Education, Graduate School of
Chemical Materials, Crystal bank Institute, Pusan National
University, 63-2 Busandaehak-ro, Busan 46241, Republic of
Korea
- Department of Nano Fusion Technology,
Pusan National University, 63-2 Busandaehak-ro, Busan 46241,
Republic of Korea
| | - Jeong-Seok Nam
- Department of Chemistry Education, Graduate School of
Chemical Materials, Crystal bank Institute, Pusan National
University, 63-2 Busandaehak-ro, Busan 46241, Republic of
Korea
- Department of Nano Fusion Technology,
Pusan National University, 63-2 Busandaehak-ro, Busan 46241,
Republic of Korea
| | - Jiye Han
- Department of Chemistry Education, Graduate School of
Chemical Materials, Crystal bank Institute, Pusan National
University, 63-2 Busandaehak-ro, Busan 46241, Republic of
Korea
- Department of Nano Fusion Technology,
Pusan National University, 63-2 Busandaehak-ro, Busan 46241,
Republic of Korea
| | - Qiang Zhang
- Department of Applied Physics, Aalto
University School of Science, Aalto FI-00076,
Finland
| | - Esko I. Kauppinen
- Department of Applied Physics, Aalto
University School of Science, Aalto FI-00076,
Finland
| | - Il Jeon
- Department of Chemistry Education, Graduate School of
Chemical Materials, Crystal bank Institute, Pusan National
University, 63-2 Busandaehak-ro, Busan 46241, Republic of
Korea
- Department of Nano Fusion Technology,
Pusan National University, 63-2 Busandaehak-ro, Busan 46241,
Republic of Korea
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22
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Schmidt A, Ramos MK, Ferreira CM, Braz BA, Zarbin AJ. Molybdenum-based materials/carbon nanotubes nanocomposites prepared as thin and transparent films for aqueous K-ion batteries. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.138500] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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23
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Stasyuk OA, Stasyuk AJ, Solà M, Voityuk AA. How Do Defects in Carbon Nanostructures Regulate the Photoinduced Electron Transfer Processes? The Case of Phenine Nanotubes. Chemphyschem 2021; 22:1178-1186. [PMID: 33871156 PMCID: PMC8252612 DOI: 10.1002/cphc.202100285] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Indexed: 12/22/2022]
Abstract
Photoinduced electron transfer is studied in a series of inclusion complexes of structurally modified phenine nanotubes (pNT) with C70 using the TD-DFT method. Analysis of electronic properties of the complexes shows that the electron transfer is infeasible in pNT_4d⊃C70 built on the tetrameric array of [6]cyclo-meta-phenylene ([6]CMP) units. However, replacing one or more [6]CMP units with a coronene moiety enables electron transfer from pNT to C70 . The generation of the charge separated states from the lowest locally excited states occurs on a sub-nanosecond time scale. Depending on the number of the [6]CMP units, the charge recombination rate varies from 1.8 ⋅ 107 to 3.1 ⋅ 102 s-1 , i. e., five orders of magnitude.
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Affiliation(s)
- Olga A. Stasyuk
- Institut de Química Computacional and Departament de Química, Universitat de GironaC/ Maria Aurèlia17003GironaSpain
| | - Anton J. Stasyuk
- Institut de Química Computacional and Departament de Química, Universitat de GironaC/ Maria Aurèlia17003GironaSpain
- Faculty of ChemistryUniversity of WarsawPasteura 102-093WarsawPoland
| | - Miquel Solà
- Institut de Química Computacional and Departament de Química, Universitat de GironaC/ Maria Aurèlia17003GironaSpain
| | - Alexander A. Voityuk
- Institut de Química Computacional and Departament de Química, Universitat de GironaC/ Maria Aurèlia17003GironaSpain
- Institució Catalana de Recerca i Estudis Avancats (ICREA)08010BarcelonaSpain
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Pasban S, Raissi H. Nanotechnology-based approaches for targeting and delivery of drugs via Hexakis (m-PE) macrocycles. Sci Rep 2021; 11:8256. [PMID: 33859230 PMCID: PMC8050045 DOI: 10.1038/s41598-021-87011-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Accepted: 03/22/2021] [Indexed: 12/04/2022] Open
Abstract
Hexakis (m-phenylene ethynylene) (m-PE) macrocycles, with aromatic backbones and multiple hydrogen-bonding side chains, had a very high propensity to self-assemble via H-bond and π-π stacking interactions to form nanotubular structures with defined inner pores. Such stacking of rigid macrocycles is leading to novel applications that enable the researchers to explored mass transport in the sub-nanometer scale. Herein, we performed density functional theory (DFT) calculations to examine the drug delivery performance of the hexakis dimer as a novel carrier for doxorubicin (DOX) agent in the chloroform and water solvents. Based on the DFT results, it is found that the adsorption of DOX on the carrier surface is typically physisorption with the adsorption strength values of - 115.14 and - 83.37 kJ/mol in outside and inside complexes, respectively, and so that the essence of the drug remains intact. The negative values of the binding energies for all complexes indicate the stability of the drug molecule inside and outside the carrier's cavities. The energy decomposition analysis (EDA) has also been performed and shown that the dispersion interaction has an essential role in stabilizing the drug-hexakis dimer complexes. To further explore the electronic properties of dox, the partial density of states (PDOS and TDOS) are calculated. The atom in molecules (AIM) and Becke surface (BS) methods are also analyzed to provide an inside view of the nature and strength of the H-bonding interactions in complexes. The obtained results indicate that in all studied complexes, H-bond formation is the driving force in the stabilization of these structures, and also chloroform solvent is more favorable than the water solution. Overall, our findings offer insightful information on the efficient utilization of hexakis dimer as drug delivery systems to deliver anti-cancer drugs.
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Affiliation(s)
- Samaneh Pasban
- Department of Chemistry, University of Birjand, Birjand, Iran
| | - Heidar Raissi
- Department of Chemistry, University of Birjand, Birjand, Iran.
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25
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Gao J, Zhu Z, Shen B, Bai Y, Sun S, Wei F. Bandgap-Coupled Template Autocatalysis toward the Growth of High-Purity sp 2 Nanocarbons. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:2003078. [PMID: 33854884 PMCID: PMC8025012 DOI: 10.1002/advs.202003078] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 10/29/2020] [Indexed: 06/12/2023]
Abstract
Extraordinary properties and great application potentials of carbon nanotubes (CNT) and graphene fundamentally rely on their large-scale perfect sp2 structure. Particularly for high-end applications, ultralow defect density and ultrahigh selectivity are prerequisites, for which metal-catalyzed chemical vapor deposition (CVD) is the most promising approach. Due to their structure and peculiarity, CNTs and graphene can themselves provide growth templates and nonlocal dual conductance, serving as template autocatalysts with tunable bandgap during the CVD. However, current growth kinetics models all focus on the external factors and edges. Here, the growth kinetics of sp2 nanocarbons is elaborated from the perspective of template autocatalysis and holistic electronic structure. After reviewing current growth kinetics, various representative works involving CVD growth of different sp2 nanocarbons are analyzed, to reveal their bandgap-coupled kinetics and resulting selective synthesis. Recent progress is then reviewed, which has demonstrated the interlocking between the atomic assembly rate and bandgap of CNTs, with an explicit volcano dependence whose peak would be determined by the environment. In addition, the topological protection for perfect sp2 structure and the defect-induced perturbation for the interlocking are discussed. Finally, the prospects for the kinetic selective growth of perfect nanocarbons are proposed.
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Affiliation(s)
- Jun Gao
- Beijing Key Laboratory of Green Chemical Reaction Engineering and TechnologyDepartment of Chemical EngineeringTsinghua UniversityBeijing100084China
| | - Zhenxing Zhu
- Beijing Key Laboratory of Green Chemical Reaction Engineering and TechnologyDepartment of Chemical EngineeringTsinghua UniversityBeijing100084China
| | - Boyuan Shen
- Beijing Key Laboratory of Green Chemical Reaction Engineering and TechnologyDepartment of Chemical EngineeringTsinghua UniversityBeijing100084China
| | - Yunxiang Bai
- Beijing Key Laboratory of Green Chemical Reaction Engineering and TechnologyDepartment of Chemical EngineeringTsinghua UniversityBeijing100084China
| | - Silei Sun
- Beijing Key Laboratory of Green Chemical Reaction Engineering and TechnologyDepartment of Chemical EngineeringTsinghua UniversityBeijing100084China
| | - Fei Wei
- Beijing Key Laboratory of Green Chemical Reaction Engineering and TechnologyDepartment of Chemical EngineeringTsinghua UniversityBeijing100084China
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26
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Contreras L, Villarroel I, Torres C, Rozas R. Doxorubicin Encapsulation in Carbon Nanotubes Having Haeckelite or Stone-Wales Defects as Drug Carriers: A Molecular Dynamics Approach. Molecules 2021; 26:1586. [PMID: 33805628 PMCID: PMC7999666 DOI: 10.3390/molecules26061586] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 03/10/2021] [Accepted: 03/11/2021] [Indexed: 11/25/2022] Open
Abstract
Doxorubicin (DOX), a recognized anticancer drug, forms stable associations with carbon nanotubes (CNTs). CNTs when properly functionalized have the ability to anchor directly in cancerous tumors where the release of the drug occurs thanks to the tumor slightly acidic pH. Herein, we study the armchair and zigzag CNTs with Stone-Wales (SW) defects to rank their ability to encapsulate DOX by determining the DOX-CNT binding free energies using the MM/PBSA and MM/GBSA methods implemented in AMBER16. We investigate also the chiral CNTs with haeckelite defects. Each haeckelite defect consists of a pair of square and octagonal rings. The armchair and zigzag CNT with SW defects and chiral nanotubes with haeckelite defects predict DOX-CNT interactions that depend on the length of the nanotube, the number of present defects and nitrogen doping. Chiral nanotubes having two haeckelite defects reveal a clear dependence on the nitrogen content with DOX-CNT interaction forces decreasing in the order 0N > 4N > 8N. These results contribute to a further understanding of drug-nanotube interactions and to the design of new drug delivery systems based on CNTs.
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Affiliation(s)
- Leonor Contreras
- Laboratorio de Química Computacional y Propiedad Intelectual, Departamento de Ciencias del Ambiente, Facultad de Química y Biología, Universidad de Santiago de Chile, USACH, Avenida Libertador Bernardo O’Higgins 3363, Casilla 40, Correo 33, Santiago 9170022, Chile;
| | - Ignacio Villarroel
- Departamento de Computación e Informática, Facultad de Ingeniería, Universidad de Santiago de Chile, USACH, Avenida Ecuador 3659, Santiago 9170022, Chile; (I.V.); (C.T.)
| | - Camila Torres
- Departamento de Computación e Informática, Facultad de Ingeniería, Universidad de Santiago de Chile, USACH, Avenida Ecuador 3659, Santiago 9170022, Chile; (I.V.); (C.T.)
| | - Roberto Rozas
- Laboratorio de Química Computacional y Propiedad Intelectual, Departamento de Ciencias del Ambiente, Facultad de Química y Biología, Universidad de Santiago de Chile, USACH, Avenida Libertador Bernardo O’Higgins 3363, Casilla 40, Correo 33, Santiago 9170022, Chile;
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27
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Wang J, Yu J, Fu Q, Yang H, Tong Q, Hao Z, Ouyang G. Unprecedented Nonphotomediated Hole ( h + ) Oxidation System Constructed from Defective Carbon Nanotubes and Superoxides. ACS CENTRAL SCIENCE 2021; 7:355-364. [PMID: 33655073 PMCID: PMC7908038 DOI: 10.1021/acscentsci.0c01600] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Indexed: 05/04/2023]
Abstract
Holes (h + ) on heterogeneous photocatalysts could act as important oxidative species or precursors for reactive oxygen species (ROS). However, due to the ultrafast recombination of photoinduced electrons and holes, a majority of carriers are consumed prior to surface reactions. Herein, we report an unprecedented nonphotomediated hole oxidation system constructed from carbon nanotubes (CNTs) and superoxides. This system exhibited high catalytic activity for the degradation of organic pollutants, which outperforms the classical oxidation processes in the remediation of actual wastewater and is comparable to that of the best single cobalt atom catalyst. Theoretical and experimental results reveal that the intrinsic defects with unpaired spins on CNTs served as adsorptive sites to activate superoxides. This is the first report on exploring the oxidation properties of nonphotomediated hole carriers on heterogeneous catalysts, which will be of broad interest for researchers in environmental remediation, chemical synthesis, and biological fields.
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Affiliation(s)
- Junhui Wang
- MOE
Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, Guangdong 510275, China
| | - Jiaxing Yu
- School
of Materials Science and Engineering, Sun Yat-Sen University, Guangzhou, Guangdong 510275, China
| | - Qi Fu
- MOE
Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, Guangdong 510275, China
| | - Huangsheng Yang
- MOE
Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, Guangdong 510275, China
| | - Qing Tong
- Jiangsu
Key Laboratory of Vehicle Emissions Control, Center of Modern Analysis, Nanjing University, Nanjing 210093, China
| | - Zhengping Hao
- National
Engineering Laboratory for VOCs Pollution Control Material & Technology, University of Chinese Academy of Sciences, Beijing 101408, China
| | - Gangfeng Ouyang
- MOE
Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, Guangdong 510275, China
- Chemistry
College, Center of Advanced Analysis and Gene Sequencing, Zhengzhou University, Zhengzhou 450001, China
- Tel: +86 020 84110845/0953. Fax: +86 020 84110845/0953. Email address:
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Sun X, Xue J, Ren Y, Li X, Zhou L, Li B, Zhao Z. Catalytic Property and Stability of Subnanometer Pt Cluster on Carbon Nanotube in Direct Propane Dehydrogenation. CHINESE J CHEM 2021. [DOI: 10.1002/cjoc.202000415] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Xiaoying Sun
- Institute of Catalysis for Energy and Environment, College of Chemistry and Chemical Engineering, Shenyang Normal University Shenyang Liaoning 110034 China
| | - Jiahui Xue
- Institute of Catalysis for Energy and Environment, College of Chemistry and Chemical Engineering, Shenyang Normal University Shenyang Liaoning 110034 China
| | - Yu Ren
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum Beijing 102249 China
| | - Xinyu Li
- Institute of Catalysis for Energy and Environment, College of Chemistry and Chemical Engineering, Shenyang Normal University Shenyang Liaoning 110034 China
| | - Lijing Zhou
- Institute of Catalysis for Energy and Environment, College of Chemistry and Chemical Engineering, Shenyang Normal University Shenyang Liaoning 110034 China
| | - Bo Li
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang Liaoning 110016 China
| | - Zhen Zhao
- Institute of Catalysis for Energy and Environment, College of Chemistry and Chemical Engineering, Shenyang Normal University Shenyang Liaoning 110034 China
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum Beijing 102249 China
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29
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Pasban S, Raissi H. New insights into Hexakis macrocycles as a novel nano-carrier for highly potent anti-cancer treatment: A new challenge in drug delivery. Colloids Surf B Biointerfaces 2020; 197:111402. [PMID: 33059208 DOI: 10.1016/j.colsurfb.2020.111402] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 09/30/2020] [Accepted: 10/04/2020] [Indexed: 12/19/2022]
Abstract
The purpose of this study is to design and evaluate a new tubular assembly structure of Hexakis (m-phenylene ethynylene) (m-PE) macrocycles and to explore its potential application as an innovative drug delivery system. First, we focused on how (m-PE) macrocycles can be self-assembled in both chloroform (CHCl3) and water solvents for the formation of the assembled nanotube using molecular dynamics (MD) simulations. In contrast to their behavior in water solvent, all ten (m-PE) macrocycles remain aggregated at low concentrations of CHCl3. We found that these macrocycles carrying chiral side chains and capable of H-bonded self-association, assemble into tubular stacks. Then, the dual delivery strategy for the transport of doxorubicin (DOX) and curcumin (Cur) on the self-assembly system of hexakis (m-PE) nanocarrier is examined using molecular dynamics (MD) simulation and free energy calculation. The obtained results indicated that the binding energy of DOX (- 298.9 kJ/mol) on hexakis (m-PE) in the presence of Cur is higher than free DOX (- 247.7 kJ/mol). Furthermore, in the interaction of the DOX and hexakis m-PE, the contribution of van der Walls (vdW) energy is higher than electrostatic (elec) energy, which can be related to the strong π-π interactions between the drug molecules with the carrier surface. In general, the results indicated that the simultaneous delivery of DOX and Cur through DOX/Cur/hexakis (m-PE) could be a promising vehicle in tumor therapy. Based on the obtained results of the present research, hexakis (m-PE) macrocycle can be used as a drug delivery vehicle for targeted or systemic delivery.
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Affiliation(s)
- Samaneh Pasban
- Department of Chemistry, University of Birjand, Birjand, Iran.
| | - Heidar Raissi
- Department of Chemistry, University of Birjand, Birjand, Iran.
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30
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The Importance of Evaluating the Lot-to-Lot Batch Consistency of Commercial Multi-Walled Carbon Nanotube Products. NANOMATERIALS 2020; 10:nano10101930. [PMID: 32992617 PMCID: PMC7601794 DOI: 10.3390/nano10101930] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/23/2020] [Revised: 09/21/2020] [Accepted: 09/24/2020] [Indexed: 12/12/2022]
Abstract
The biological response of multi-walled carbon nanotubes (MWNTs) is related to their physicochemical properties and a thorough MWNT characterization should accompany an assessment of their biological activity, including their potential toxicity. Beyond characterizing the physicochemical properties of MWNTs from different sources or manufacturers, it is also important to characterize different production lots of the same MWNT product from the same vendor (i.e., lot-to-lot batch consistency). Herein, we present a comprehensive physicochemical characterization of two lots of commercial pristine MWNTs (pMWNTs) and carboxylated MWNTs (cMWNTs) used to study the response of mammalian macrophages to MWNTs. There were many similarities between the physicochemical properties of the two lots of cMWNTs and neither significantly diminished the 24-h proliferation of RAW 264.7 macrophages up to the highest concentration tested (200 μg cMWNTs/mL). Conversely, several physicochemical properties of the two lots of pMWNTs were different; notably, the newer lot of pMWNTs displayed less oxidative stability, a higher defect density, and a smaller amount of surface oxygen species relative to the original lot. Furthermore, a 72-h half maximal inhibitory concentration (IC-50) of ~90 µg pMWNTs/mL was determined for RAW 264.7 cells with the new lot of pMWNTs. These results demonstrate that subtle physicochemical differences can lead to significantly dissimilar cellular responses, and that production-lot consistency must be considered when assessing the toxicity of MWNTs.
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31
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An MD-based systematic study on the mechanical characteristics of a novel hybrid CNT/graphene drug carrier. J Mol Model 2020; 26:241. [PMID: 32814981 DOI: 10.1007/s00894-020-04487-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Accepted: 07/27/2020] [Indexed: 10/23/2022]
Abstract
This paper is aimed to assess the mechanical properties of a hybrid graphene-carbon nanotube carrier embedded with doxorubicin (DOX). Utilizing molecular dynamics simulation, the results reveal that by increasing the temperature from 309 to 313 K, the elastic modulus of the GS/CNT/DOX carrier decreases from 0.8 to 0.74 TPa. Also, it is shown that the presence of chitosan molecules enhances the mechanical characteristics of the proposed nanocarrier. Taking the chirality of the graphene sheet into account, the results indicate that by increasing the size of the graphene sheet, the failure stress is slightly increased for the armchair type. However, this value decreases as the size of the zigzag sample increases. Additionally, the influence of aspect ratio on the elastic modulus, fracture stress, and fracture strain of these systems is systematically examined. It has been shown that the failure stress may change significantly with increasing this parameter, especially for carrier systems having zigzag carbon nanostructures. Moreover considering various voids content in the CNT structure, the weakening effect of defects is systematically explored. Also, the dependence of the mechanical features of the proposed hybrid carrier on the presence of DOX molecules is studied via MD simulations. Finally, we have investigated the role of CNT physical characteristics including its size and chirality on the results. Graphical abstract.
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32
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Rowe P, Deringer VL, Gasparotto P, Csányi G, Michaelides A. An accurate and transferable machine learning potential for carbon. J Chem Phys 2020; 153:034702. [DOI: 10.1063/5.0005084] [Citation(s) in RCA: 71] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Affiliation(s)
- Patrick Rowe
- Thomas Young Centre, London Centre for Nanotechnology, and Department of Physics and Astronomy, University College London, Gower Street, London, WC1E 6BT, United Kingdom
| | - Volker L. Deringer
- Department of Chemistry, Inorganic Chemistry Laboratory, University of Oxford, Oxford OX1 3QR, United Kingdom
| | - Piero Gasparotto
- Thomas Young Centre, London Centre for Nanotechnology, and Department of Physics and Astronomy, University College London, Gower Street, London, WC1E 6BT, United Kingdom
| | - Gábor Csányi
- Engineering Laboratory, University of Cambridge, Trumpington Street, Cambridge CB2 1PZ, United Kingdom
| | - Angelos Michaelides
- Thomas Young Centre, London Centre for Nanotechnology, and Department of Physics and Astronomy, University College London, Gower Street, London, WC1E 6BT, United Kingdom
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33
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Li Y, Segawa Y, Yagi A, Itami K. A Nonalternant Aromatic Belt: Methylene-Bridged [6]Cycloparaphenylene Synthesized from Pillar[6]arene. J Am Chem Soc 2020; 142:12850-12856. [DOI: 10.1021/jacs.0c06007] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yuanming Li
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Chikusa, Nagoya 464-8602, Japan
| | - Yasutomo Segawa
- Graduate School of Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan
- JST-ERATO, Itami Molecular Nanocarbon Project, Nagoya University, Chikusa, Nagoya 464-8602, Japan
- Institute for Molecular Science, Myodaiji, Okazaki 444-8787, Japan
- Department of Structural Molecular Science, SOKENDAI (The Graduate University for Advanced Studies), Myodaiji, Okazaki 444-8787, Japan
| | - Akiko Yagi
- Graduate School of Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan
| | - Kenichiro Itami
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Chikusa, Nagoya 464-8602, Japan
- Graduate School of Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan
- JST-ERATO, Itami Molecular Nanocarbon Project, Nagoya University, Chikusa, Nagoya 464-8602, Japan
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34
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Ko M, Mendecki L, Eagleton AM, Durbin CG, Stolz RM, Meng Z, Mirica KA. Employing Conductive Metal-Organic Frameworks for Voltammetric Detection of Neurochemicals. J Am Chem Soc 2020; 142:11717-11733. [PMID: 32155057 DOI: 10.1021/jacs.9b13402] [Citation(s) in RCA: 85] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
This paper describes the first implementation of an array of two-dimensional (2D) layered conductive metal-organic frameworks (MOFs) as drop-casted film electrodes that facilitate voltammetric detection of redox active neurochemicals in a multianalyte solution. The device configuration comprises a glassy carbon electrode modified with a film of conductive MOF (M3HXTP2; M = Ni, Cu; and X = NH, 2,3,6,7,10,11-hexaiminotriphenylene (HITP) or O, 2,3,6,7,10,11-hexahydroxytriphenylene (HHTP)). The utility of 2D MOFs in voltammetric sensing is measured by the detection of ascorbic acid (AA), dopamine (DA), uric acid (UA), and serotonin (5-HT) in 0.1 M PBS (pH = 7.4). In particular, Ni3HHTP2 MOFs demonstrated nanomolar detection limits of 63 ± 11 nM for DA and 40 ± 17 nM for 5-HT through a wide concentration range (40 nM-200 μM). The applicability in biologically relevant detection was further demonstrated in simulated urine using Ni3HHTP2 MOFs for the detection of 5-HT with a nanomolar detection limit of 63 ± 11 nM for 5-HT through a wide concentration range (63 nM-200 μM) in the presence of a constant background of DA. The implementation of conductive MOFs in voltammetric detection holds promise for further development of highly modular, sensitive, selective, and stable electroanalytical devices.
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Affiliation(s)
- Michael Ko
- Department of Chemistry, Burke Laboratory, Dartmouth College, Hanover, New Hampshire 03755, United States
| | - Lukasz Mendecki
- Department of Chemistry, Burke Laboratory, Dartmouth College, Hanover, New Hampshire 03755, United States
| | - Aileen M Eagleton
- Department of Chemistry, Burke Laboratory, Dartmouth College, Hanover, New Hampshire 03755, United States
| | - Claudia G Durbin
- Department of Chemistry, Burke Laboratory, Dartmouth College, Hanover, New Hampshire 03755, United States
| | - Robert M Stolz
- Department of Chemistry, Burke Laboratory, Dartmouth College, Hanover, New Hampshire 03755, United States
| | - Zheng Meng
- Department of Chemistry, Burke Laboratory, Dartmouth College, Hanover, New Hampshire 03755, United States
| | - Katherine A Mirica
- Department of Chemistry, Burke Laboratory, Dartmouth College, Hanover, New Hampshire 03755, United States
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35
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Krug CK, Nieckarz D, Fan Q, Szabelski P, Gottfried JM. The Macrocycle versus Chain Competition in On-Surface Polymerization: Insights from Reactions of 1,3-Dibromoazulene on Cu(111). Chemistry 2020; 26:7647-7656. [PMID: 32031714 PMCID: PMC7318695 DOI: 10.1002/chem.202000486] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Indexed: 12/21/2022]
Abstract
Ring/chain competition in oligomerization reactions represents a long‐standing topic of synthetic chemistry and was treated extensively for solution reactions but is not well‐understood for the two‐dimensional confinement of surface reactions. Here, the kinetic and thermodynamic principles of ring/chain competition in on‐surface synthesis are addressed by scanning tunneling microscopy, X‐ray photoelectron spectroscopy, and Monte Carlo simulations applied to azulene‐based organometallic oligomers on Cu(111). Analysis of experiments and simulations reveals how the ring/chain ratio can be controlled through variation of coverage and temperature. At room temperature, non‐equilibrium conditions prevail and kinetic control leads to preferential formation of the entropically favored chains. In contrast, high‐temperature equilibrium conditions are associated with thermodynamic control, resulting in increased yields of the energetically favored rings. The optimum conditions for ring formation include the lowest possible temperature within the regime of thermodynamic control and a low coverage. The general implications are discussed and compared to the solution case.
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Affiliation(s)
- Claudio K Krug
- Department of Chemistry, Philipps University Marburg, Hans-Meerwein-Straße 4, 35032, Marburg, Germany
| | - Damian Nieckarz
- Department of Theoretical Chemistry, Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Skłodowska University in Lublin, Pl. M.C. Skłodowskiej 3, Lublin, 20-031, Poland
| | - Qitang Fan
- Department of Chemistry, Philipps University Marburg, Hans-Meerwein-Straße 4, 35032, Marburg, Germany
| | - Paweł Szabelski
- Department of Theoretical Chemistry, Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Skłodowska University in Lublin, Pl. M.C. Skłodowskiej 3, Lublin, 20-031, Poland
| | - J Michael Gottfried
- Department of Chemistry, Philipps University Marburg, Hans-Meerwein-Straße 4, 35032, Marburg, Germany
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36
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Chen YR, Lin MK, Chan DH, Lin KB, Kaun CC. Ab Initio and Theoretical Study on Electron Transport through Polyene Junctions in between Carbon Nanotube Leads of Various Cuts. Sci Rep 2020; 10:8033. [PMID: 32415169 PMCID: PMC7229008 DOI: 10.1038/s41598-020-63363-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Accepted: 03/30/2020] [Indexed: 11/09/2022] Open
Abstract
In this study we look into the interference effect in multi-thread molecular junctions in between carbon-nanotube (CNT) electrodes of assorted edges. From the tube end into the tube bulk of selected CNTs, we investigate surface Green's function and layer-by-layer local density of states (LDOS), and find that both the cross-cut and the angled-cut armchair CNTs exhibit 3-layer-cycled LDOS oscillations. Moreover, the angled-cut armchair CNTs, which possess a zigzag rim at the cut, exhibit not only the oscillations, but also edge state component that decays into the tube bulk. In the case of cross-cut zigzag CNTs, the LDOS shows no sign of oscillations, but prominent singularity feature due to edge states. With these cut CNTs as leads, we study the single-polyene and two-polyene molecular junctions via both ab initio and tight-binding model approaches. While the interference effect between transport channels is manifested through our results, we also differentiate the contributions towards transmission from the bulk states and the edge states, by understanding the difference in the Green's functions obtained from direct integration method and iterative method, separately.
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Affiliation(s)
- Yiing-Rei Chen
- Department of Physics, National Taiwan Normal University, Taipei, 11677, Taiwan.
| | - Ming-Kuan Lin
- Department of Physics, National Taiwan Normal University, Taipei, 11677, Taiwan
| | - Dun-Hao Chan
- Department of Physics, National Taiwan Normal University, Taipei, 11677, Taiwan
| | - Kuan-Bo Lin
- Department of Materials Science and Engineering, National Cheng Kung University, Tainan, 70101, Taiwan.,Research Center for Applied Sciences, Academia Sinica, Taipei, 11529, Taiwan
| | - Chao-Cheng Kaun
- Research Center for Applied Sciences, Academia Sinica, Taipei, 11529, Taiwan.,Department of Physics, National Tsing-Hua University, Hsinchu, 30013, Taiwan
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37
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Jang Y, Kim H, Yang SY, Jung J, Oh J. Bioactive multiple-bent MWCNTs for sensitive and reliable electrochemical detection of picomolar-level C-reactive proteins. NANOSCALE 2020; 12:9980-9990. [PMID: 32129408 DOI: 10.1039/c9nr10798c] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
We present multiple-bent multi-walled carbon nanotubes (MWCNTs) that enable the picomolar detection of C-reactive protein (CRP), which is considered to be a promising biomarker for various diseases. The MWCNTs were grown via chemical vapor deposition repeating the asymmetric catalytic CNT growth on atypical carbon nanoparticles that were generated by carbon coating on a silicon substrate. The multiple-bent MWCNTs with the carbon film (CF) possessed abundant hydrophilic functional groups (-COOH and -OH) at their bending sites, resulting in enhanced bioadhesion to collagen and platelets, compared to MWCNTs grown without a CF layer. Interestingly, the bent MWCNTs enhanced the reliability and sensitivity of the electrochemical detection at low CRP concentrations, possibly due to molecular affinity at the bent site. The bioactive bent MWCNTs can play a significant role in ultrasensitive biosensors to improve their detection limit, thereby achieving early detection and monitoring of CRP-related diseases such as cardiovascular events and melanoma.
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Affiliation(s)
- Yeongseok Jang
- Department of Mechanical Design Engineering, Jeonbuk National University, Jeonju 54896, South Korea
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38
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Han Y, Xue Z, Li G, Gu Y, Ni Y, Dong S, Chi C. Formation of Azulene‐Embedded Nanographene: Naphthalene to Azulene Rearrangement During the Scholl Reaction. Angew Chem Int Ed Engl 2020; 59:9026-9031. [DOI: 10.1002/anie.201915327] [Citation(s) in RCA: 54] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Revised: 01/10/2020] [Indexed: 01/06/2023]
Affiliation(s)
- Yi Han
- Department of Chemistry National University of Singapore 3 Science Drive 3 117543 Singapore Singapore
| | - Zibo Xue
- Department of Chemistry National University of Singapore 3 Science Drive 3 117543 Singapore Singapore
| | - Guangwu Li
- Department of Chemistry National University of Singapore 3 Science Drive 3 117543 Singapore Singapore
| | - Yanwei Gu
- Department of Chemistry National University of Singapore 3 Science Drive 3 117543 Singapore Singapore
| | - Yong Ni
- Department of Chemistry National University of Singapore 3 Science Drive 3 117543 Singapore Singapore
| | - Shaoqiang Dong
- Department of Chemistry National University of Singapore 3 Science Drive 3 117543 Singapore Singapore
| | - Chunyan Chi
- Department of Chemistry National University of Singapore 3 Science Drive 3 117543 Singapore Singapore
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39
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Han Y, Xue Z, Li G, Gu Y, Ni Y, Dong S, Chi C. Formation of Azulene‐Embedded Nanographene: Naphthalene to Azulene Rearrangement During the Scholl Reaction. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201915327] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Yi Han
- Department of Chemistry National University of Singapore 3 Science Drive 3 117543 Singapore Singapore
| | - Zibo Xue
- Department of Chemistry National University of Singapore 3 Science Drive 3 117543 Singapore Singapore
| | - Guangwu Li
- Department of Chemistry National University of Singapore 3 Science Drive 3 117543 Singapore Singapore
| | - Yanwei Gu
- Department of Chemistry National University of Singapore 3 Science Drive 3 117543 Singapore Singapore
| | - Yong Ni
- Department of Chemistry National University of Singapore 3 Science Drive 3 117543 Singapore Singapore
| | - Shaoqiang Dong
- Department of Chemistry National University of Singapore 3 Science Drive 3 117543 Singapore Singapore
| | - Chunyan Chi
- Department of Chemistry National University of Singapore 3 Science Drive 3 117543 Singapore Singapore
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40
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Tanaka M, Aoki K, Haniu H, Kamanaka T, Takizawa T, Sobajima A, Yoshida K, Okamoto M, Kato H, Saito N. Applications of Carbon Nanotubes in Bone Regenerative Medicine. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E659. [PMID: 32252244 PMCID: PMC7221610 DOI: 10.3390/nano10040659] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/15/2020] [Revised: 03/28/2020] [Accepted: 03/29/2020] [Indexed: 01/02/2023]
Abstract
Scaffolds are essential for bone regeneration due to their ability to maintain a sustained release of growth factors and to provide a place where cells that form new bone can enter and proliferate. In recent years, scaffolds made of various materials have been developed and evaluated. Functionally effective scaffolds require excellent cell affinity, chemical properties, mechanical properties, and safety. Carbon nanotubes (CNTs) are fibrous nanoparticles with a nano-size diameter and have excellent strength and chemical stability. In the industrial field, they are used as fillers to improve the performance of materials. Because of their excellent physicochemical properties, CNTs are studied for their promising clinical applications as biomaterials. In this review article, we focused on the results of our research on CNT scaffolds for bone regeneration, introduced the promising properties of scaffolds for bone regeneration, and described the potential of CNT scaffolds.
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Affiliation(s)
- Manabu Tanaka
- Department of Orthopaedic Surgery, Okaya City Hospital, 4-11-33 Honcho, Okaya, Nagano 394-8512, Japan
| | - Kaoru Aoki
- Physical Therapy Division, School of Health Sciences, Shinshu University, 3-1-1 Asahi, Matsumoto, Nagano 390-8621, Japan;
| | - Hisao Haniu
- Institute for Biomedical Sciences, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University, 3-1-1 Asahi, Matsumoto, Nagano 390-8621, Japan; (H.H.); (N.S.)
- Department of Biomedical Engineering, Graduate School of Medicine, Science and Technology, Shinshu University, 3-1-1 Asahi, Matsumoto, Nagano 390-8621, Japan
| | - Takayuki Kamanaka
- Department of Orthopaedic Surgery, Shinshu University School of Medicine, 3-1-1 Asahi, Matsumoto, Nagano 390-8621, Japan; (T.K.); (T.T.); (K.Y.); (M.O.); (H.K.)
| | - Takashi Takizawa
- Department of Orthopaedic Surgery, Shinshu University School of Medicine, 3-1-1 Asahi, Matsumoto, Nagano 390-8621, Japan; (T.K.); (T.T.); (K.Y.); (M.O.); (H.K.)
| | - Atsushi Sobajima
- Department of Orthopaedic Surgery, Marunouchi Hospital, 1-7-45 Nagisa, Matsumoto, Nagano 390-8601, Japan;
| | - Kazushige Yoshida
- Department of Orthopaedic Surgery, Shinshu University School of Medicine, 3-1-1 Asahi, Matsumoto, Nagano 390-8621, Japan; (T.K.); (T.T.); (K.Y.); (M.O.); (H.K.)
| | - Masanori Okamoto
- Department of Orthopaedic Surgery, Shinshu University School of Medicine, 3-1-1 Asahi, Matsumoto, Nagano 390-8621, Japan; (T.K.); (T.T.); (K.Y.); (M.O.); (H.K.)
| | - Hiroyuki Kato
- Department of Orthopaedic Surgery, Shinshu University School of Medicine, 3-1-1 Asahi, Matsumoto, Nagano 390-8621, Japan; (T.K.); (T.T.); (K.Y.); (M.O.); (H.K.)
| | - Naoto Saito
- Institute for Biomedical Sciences, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University, 3-1-1 Asahi, Matsumoto, Nagano 390-8621, Japan; (H.H.); (N.S.)
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41
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Fan W, Chen J. Two-state diffusive mobility of slow and fast transport of water in narrow nanochannels. Phys Rev E 2020; 101:010101. [PMID: 32069533 DOI: 10.1103/physreve.101.010101] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Indexed: 11/06/2022]
Abstract
Transport of water in narrow nanochannels as a single-file chain is involved in various biological activities and nanofluidic applications. However, although the consistent dipole orientation of the water molecules is intensively studied, its effect upon the transport behavior is still unknown. In this Rapid Communication, we find two states of slow and fast transport coexist in the single-file water in the presence of channel defects that break the collective dipole orientation. A low diffusive mobility is found for the dipole orientation inconsistent configurations while mobility approximately two times higher is found for the consistent ones. The two-state diffusion process relies on the different hydrogen bond connections, which possess overlapped structures, enabling a spontaneous transition. The slow state is insensitive to the increased defect number while the fast state is reduced accordingly. The two states exhibit different lifetime and temperature dependences that demonstrate a possibility for manipulation. Our result implies the possibility of two-state diffusion process of water in nanofluid phenomena due to the common presence of defects in nanochannels.
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Affiliation(s)
- Wen Fan
- Department of Physics, Fudan University, Shanghai 200433, China.,Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
| | - Jige Chen
- Zhangjiang Laboratory, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China.,Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
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42
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Zhang W, Zeng Z, Liu Z, Huang J, Xiao R, Shao B, Liu Y, Liu Y, Tang W, Zeng G, Gong J, He Q. Effects of carbon nanotubes on biodegradation of pollutants: Positive or negative? ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 189:109914. [PMID: 31761551 DOI: 10.1016/j.ecoenv.2019.109914] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Revised: 10/31/2019] [Accepted: 11/02/2019] [Indexed: 06/10/2023]
Abstract
Recently, a large quantity of carbon nanotubes (CNTs) enters the environment due to the increasing production and applications. More and more researches are focused on the fate and possible ecological risks of CNTs. Some literatures summarized the effects of CNTs on the chemical behavior and fate of pollutants. However, little reviewed the effects of CNTs on the biodegradation of pollutants. In general, the effects of CNTs on the biodegradation of pollutants and the related mechanisms were summarized in this review. CNTs have positive or negative effects on the biodegradation of contaminants by affecting the functional microorganisms, enzymes and the bioavailability of pollutants. CNTs may affect the microbial growth, activity, biomass, community composition, diversity and the activity of enzymes. The decrease of the bioavailability of pollutants due to the sorption on CNTs also causes the reduction of the biodegradation of contaminants. In addition, the roles of CNTs are controlled by multiple mechanisms, which are divided into three aspects i.e., properties of CNTs, environment condition, and microorganisms themself. The better understanding of the fate of CNTs and their impacts on the biochemical process in the environment is conducive to determine the release of CNTs into the environment.
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Affiliation(s)
- Wei Zhang
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, PR China
| | - Zhuotong Zeng
- The First Affiliated Hospital of Hunan University of Chinese Medicine, Changsha, 410007, China
| | - Zhifeng Liu
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, PR China.
| | - Jinhui Huang
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, PR China.
| | - Rong Xiao
- The First Affiliated Hospital of Hunan University of Chinese Medicine, Changsha, 410007, China
| | - Binbin Shao
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, PR China
| | - Yang Liu
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, PR China
| | - Yujie Liu
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, PR China
| | - Wangwang Tang
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, PR China
| | - Guangming Zeng
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, PR China
| | - Jilai Gong
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, PR China
| | - Qingyun He
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, PR China
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43
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Zhou Y, Zhang ZY, Huang X, Li J, Li T. Versatile Functionalization of Carbon Nanomaterials by Ferrate(VI). NANO-MICRO LETTERS 2020; 12:32. [PMID: 34138081 PMCID: PMC7770691 DOI: 10.1007/s40820-019-0353-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Accepted: 12/01/2019] [Indexed: 05/04/2023]
Abstract
As a high-valent iron compound with Fe in the highest accessible oxidation state, ferrate(VI) brings unique opportunities for a number of areas where chemical oxidation is essential. Recently, it is emerging as a novel oxidizing agent for materials chemistry, especially for the oxidation of carbon materials. However, the reported reactivity in liquid phase (H2SO4 medium) is confusing, which ranges from aggressive to moderate, and even incompetent. Meanwhile, the solid-state reactivity underlying the "dry" chemistry of ferrate(VI) remains poorly understood. Herein, we scrutinize the reactivity of K2FeO4 using fullerene C60 and various nanocarbons as substrates. The results unravel a modest reactivity in liquid phase that only oxidizes the active defects on carbon surface and a powerful oxidizing ability in solid state that can open the inert C=C bonds in carbon lattice. We also discuss respective benefit and limitation of the wet and dry approaches. Our work provides a rational understanding on the oxidizing ability of ferrate(VI) and can guide its application in functionalization/transformation of carbons and also other kinds of materials.
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Affiliation(s)
- Ying Zhou
- School of Chemistry and Chemical Engineering, Key Laboratory of Thin Film and Microfabrication (Ministry of Education), Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China
| | - Zhao-Yang Zhang
- School of Chemistry and Chemical Engineering, Key Laboratory of Thin Film and Microfabrication (Ministry of Education), Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China.
| | - Xianhui Huang
- School of Chemistry and Chemical Engineering, Key Laboratory of Thin Film and Microfabrication (Ministry of Education), Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China
| | - Jiantong Li
- School of Electrical Engineering and Computer Science, KTH Royal Institute of Technology, Electrum 229, 16440, Kista, Sweden
| | - Tao Li
- School of Chemistry and Chemical Engineering, Key Laboratory of Thin Film and Microfabrication (Ministry of Education), Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China.
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44
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Rate-selected growth of ultrapure semiconducting carbon nanotube arrays. Nat Commun 2019; 10:4467. [PMID: 31578325 PMCID: PMC6775125 DOI: 10.1038/s41467-019-12519-5] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Accepted: 09/10/2019] [Indexed: 11/24/2022] Open
Abstract
Carbon nanotubes (CNTs) are promising candidates for smart electronic devices. However, it is challenging to mediate their bandgap or chirality from a vapor-liquid-solid growth process. Here, we demonstrate rate-selected semiconducting CNT arrays based on interlocking between the atomic assembly rate and bandgap of CNTs. Rate analysis confirms the Schulz-Flory distribution which leads to various decay rates as length increases in metallic and semiconducting CNTs. Quantitatively, a nearly ten-fold faster decay rate of metallic CNTs leads to a spontaneous purification of the predicted 99.9999% semiconducting CNTs at a length of 154 mm, and the longest CNT can be 650 mm through an optimized reactor. Transistors fabricated on them deliver a high current of 14 μA μm−1 with on/off ratio around 108 and mobility over 4000 cm2 V−1 s−1. Our rate-selected strategy offers more freedom to control the CNT purity in-situ and offers a robust methodology to synthesize perfectly assembled nanotubes over a long scale. Carbon nanotubes are considered promising materials for microelectronics, but it is challenging to separate semiconducting tubes from their metallic counterparts. Here, the authors report a self-purification growth process that allows them to obtain long, highly pure semiconducting carbon nanotubes.
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45
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Zhang H, Li D, Wurz P, Cheng Y, Wang Y, Wang C, Sun J, Li G, Fausch RG. Residual Gas Adsorption and Desorption in the Field Emission of Titanium-Coated Carbon Nanotubes. MATERIALS (BASEL, SWITZERLAND) 2019; 12:E2937. [PMID: 31514335 PMCID: PMC6766199 DOI: 10.3390/ma12182937] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 08/28/2019] [Accepted: 09/02/2019] [Indexed: 02/04/2023]
Abstract
Titanium (Ti)-coated multiwall carbon nanotubes (CNTs) emitters based on the magnetron sputtering process are demonstrated, and the influences of modification to CNTs on the residual gas adsorption, gas desorption, and their field emission characteristic are discussed. Experimental results show that Ti nanoparticles are easily adsorbed on the surface of CNTs due to the "defects" produced by Ar+ irradiation pretreatment. X-ray photoelectron spectroscopy (XPS) characterization showed that Ti nanoparticles contribute to the adsorption of ambient molecules by changing the chemical bonding between C, Ti, and O. Field emission of CNTs coated with Ti nanoparticles agree well with the Fowler-Nordheim theory. The deviation of emission current under constant voltage is 6.3% and 8.6% for Ti-CNTs and pristine CNTs, respectively. The mass spectrometry analysis illustrated that Ti-coated CNTs have a better adsorption capacity at room temperature, as well as a lower outgassing effect than pristine CNTs after degassing in the process of field emission.
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Affiliation(s)
- Huzhong Zhang
- Science and Technology on Vacuum Technology and Physics Laboratory, Lanzhou Institute of Physics, Lanzhou 730000, China.
- Physics Institute, University of Bern, 3012 Bern, Switzerland.
| | - Detian Li
- Science and Technology on Vacuum Technology and Physics Laboratory, Lanzhou Institute of Physics, Lanzhou 730000, China.
| | - Peter Wurz
- Physics Institute, University of Bern, 3012 Bern, Switzerland.
| | - Yongjun Cheng
- Science and Technology on Vacuum Technology and Physics Laboratory, Lanzhou Institute of Physics, Lanzhou 730000, China.
| | - Yongjun Wang
- Science and Technology on Vacuum Technology and Physics Laboratory, Lanzhou Institute of Physics, Lanzhou 730000, China.
| | - Chengxiang Wang
- Science and Technology on Vacuum Technology and Physics Laboratory, Lanzhou Institute of Physics, Lanzhou 730000, China.
| | - Jian Sun
- Science and Technology on Vacuum Technology and Physics Laboratory, Lanzhou Institute of Physics, Lanzhou 730000, China.
| | - Gang Li
- Science and Technology on Vacuum Technology and Physics Laboratory, Lanzhou Institute of Physics, Lanzhou 730000, China.
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46
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Dong BX, Qiu F, Li Q, Shu SL, Yang HY, Jiang QC. The Synthesis, Structure, Morphology Characterizations and Evolution Mechanisms of Nanosized Titanium Carbides and Their Further Applications. NANOMATERIALS 2019; 9:nano9081152. [PMID: 31405228 PMCID: PMC6723659 DOI: 10.3390/nano9081152] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Revised: 08/08/2019] [Accepted: 08/08/2019] [Indexed: 12/20/2022]
Abstract
It is widely known that the special performances and extensive applications of the nanoscale materials are determined by their as-synthesized structures, especially their growth sizes and morphologies. Hereinto, titanium carbides, which show brilliant comprehensive properties, have attracted considerable attention from researchers. How to give full play to their potentials in the light-weight manufacture, microwave absorption, electromagnetic protection, energy conversion and catalyst areas has been widely studied. In this summarized article, the synthesis methods and mechanisms, corresponding growth morphologies of titanium carbides and their further applications were briefly reviewed and analyzed according to their different morphological dimensions, including one-dimensional nanostructures, two-dimensional nanosheets and three-dimensional nanoparticles. It is believed that through the investigation of the crystal structures, synthesis methods, growth mechanisms, and morphology characterizations of those titanium carbides, new lights could be shed on the regulation and control of the ceramic phase specific morphologies to meet with their excellent properties and applications. In addition, the corresponding development prospects and challenges of titanium carbides with various growth morphologies were also summarized.
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Affiliation(s)
- Bai-Xin Dong
- Key Laboratory of Automobile Materials, Ministry of Education and School of Materials Science and Engineering, Jilin University, Renmin Street NO. 5988, Changchun 130025, China
| | - Feng Qiu
- Key Laboratory of Automobile Materials, Ministry of Education and School of Materials Science and Engineering, Jilin University, Renmin Street NO. 5988, Changchun 130025, China.
- Qingdao Automotive Research Institute of Jilin University, Qingdao 266000, China.
| | - Qiang Li
- Key Laboratory of Automobile Materials, Ministry of Education and School of Materials Science and Engineering, Jilin University, Renmin Street NO. 5988, Changchun 130025, China
| | - Shi-Li Shu
- School of Mechanical and Aerospace Engineering, Jilin University, Changchun 130025, China
| | - Hong-Yu Yang
- National Demonstration Center for Experimental Materials Science and Engineering Education, Jiangsu University of Science and Technology, Zhenjiang 212003, China
| | - Qi-Chuan Jiang
- Key Laboratory of Automobile Materials, Ministry of Education and School of Materials Science and Engineering, Jilin University, Renmin Street NO. 5988, Changchun 130025, China.
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47
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Pampaloni NP, Rago I, Calaresu I, Cozzarini L, Casalis L, Goldoni A, Ballerini L, Scaini D. Transparent carbon nanotubes promote the outgrowth of enthorino-dentate projections in lesioned organ slice cultures. Dev Neurobiol 2019; 80:316-331. [PMID: 31314946 DOI: 10.1002/dneu.22711] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Revised: 07/10/2019] [Accepted: 07/11/2019] [Indexed: 12/25/2022]
Abstract
The increasing engineering of carbon-based nanomaterials as components of neuroregenerative interfaces is motivated by their dimensional compatibility with subcellular compartments of excitable cells, such as axons and synapses. In neuroscience applications, carbon nanotubes (CNTs) have been used to improve electronic device performance by exploiting their physical properties. Besides, when manufactured to interface neuronal networks formation in vitro, CNT carpets have shown their unique ability to potentiate synaptic networks formation and function. Due to the low optical transparency of CNTs films, further developments of these materials in neural prosthesis fabrication or in implementing interfacing devices to be paired with in vivo imaging or in vitro optogenetic approaches are currently limited. In the present work, we exploit a new method to fabricate CNTs by growing them on a fused silica surface, which results in a transparent CNT-based substrate (tCNTs). We show that tCNTs favor dissociated primary neurons network formation and function, an effect comparable to the one observed for their dark counterparts. We further adopt tCNTs to support the growth of intact or lesioned entorhinal-hippocampal complex organotypic cultures (EHCs). Through immunocytochemistry and electrophysiological field potential recordings, we show here that tCNTs platforms are suitable substrates for the growth of EHCs and we unmask their ability to significantly increase the signal synchronization and fiber sprouting between the cortex and the hippocampus with respect to Controls. tCNTs transparency and ability to enhance recovery of lesioned brain cultures, make them optimal candidates to implement implantable devices in regenerative medicine and tissue engineering.
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Affiliation(s)
| | - Ilaria Rago
- Elettra Sincrotrone Trieste, Trieste, Italy.,Department of Physics, University of Trieste, Trieste, Italy
| | - Ivo Calaresu
- International School for Advanced Studies (SISSA), Trieste, Italy
| | - Luca Cozzarini
- Elettra Sincrotrone Trieste, Trieste, Italy.,Department of Engineering and Architecture, University of Trieste, Trieste, Italy
| | | | | | - Laura Ballerini
- International School for Advanced Studies (SISSA), Trieste, Italy
| | - Denis Scaini
- International School for Advanced Studies (SISSA), Trieste, Italy.,Elettra Sincrotrone Trieste, Trieste, Italy
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48
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Lin YS, Lin Y, Periasamy AP, Cang J, Chang HT. Parameters affecting the synthesis of carbon dots for quantitation of copper ions. NANOSCALE ADVANCES 2019; 1:2553-2561. [PMID: 36132712 PMCID: PMC9419006 DOI: 10.1039/c9na00137a] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Accepted: 05/10/2019] [Indexed: 05/20/2023]
Abstract
A simple, eco-friendly, and low-cost electrochemical approach has been applied to the synthesis of carbon dots (C dots) from histidine hydrochloride in the absence or presence of halides (Cl, Br, and I) at various potentials up to 10 V. The as-formed C dots refer to C dots, Cl-C, Br-C, and I-C dots. The time-evolution UV-vis absorption and photoluminescence (PL) spectra provide more detailed information about the formation of C dots. Upon increasing the reaction time from 1 to 120 min, more and more C dots are formed, leading to increased PL intensity. The halides play two important roles in determining the formation of C dots; controlling the reaction rate and surface states. When compared to chloride and bromide, iodide has a greater effect on varying surface states and inducing PL quenching through intersystem crossing. The PL intensities of the four types of C dots all decrease upon increasing Cu2+, Hg2+, and Ag+ concentrations. In the presence of 0.8 mM I-, I-C dots compared to C dots, Cl-C dots, and Br-C dots are slightly better for quantitation of Cu2+. Fourier transform infrared spectroscopy, cyclic voltammetry, electrochemical impedance spectroscopy, and X-ray photoelectron spectroscopy results of I-C dots reveal the interactions of Cu2+ with the surface ligands (imidazole and histidine). The I-C dot probe in the presence of 0.8 mM I- is selective toward Cu2+ over the tested metal ions such as Hg2+ and Ag+. The assay provides a limit of detection of 0.22 μM for Cu2+ at a signal-to-noise ratio of 3. Practicality of this probe has been validated by the analyses of tap, lake, and sea water samples, with negligible matrix effects.
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Affiliation(s)
- Yu-Syuan Lin
- Department of Chemistry, National Taiwan University Taipei 10617 Taiwan
| | - Yaling Lin
- Department of Chemistry, National Taiwan University Taipei 10617 Taiwan
| | | | - Jinshun Cang
- Department of Chemical Engineering, Yancheng Institute of Industry Technology Yancheng Jiangsu 224005 China
| | - Huan-Tsung Chang
- Department of Chemistry, National Taiwan University Taipei 10617 Taiwan
- Department of Chemistry, Chung Yuan Christian University Taoyuan City 32023 Taiwan
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49
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Brozena AH, Kim M, Powell LR, Wang Y. Controlling the optical properties of carbon nanotubes with organic colour-centre quantum defects. Nat Rev Chem 2019; 3:375-392. [PMID: 32789186 PMCID: PMC7418925 DOI: 10.1038/s41570-019-0103-5] [Citation(s) in RCA: 83] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Previously unwelcome, defects are emerging as a new frontier of research, providing a molecular focal point to study the coupling of electrons, excitons, phonons and spin in low-dimensional materials. This opportunity is particularly intriguing in semiconducting single-walled carbon nanotubes, in which covalently bonding organic functional groups to the sp 2 carbon lattice can produce tunable sp 3 quantum defects that fluoresce brightly in the shortwave IR, emitting pure single photons at room temperature. These novel physical properties have made such synthetic defects, or 'organic colour centres', exciting new systems for chemistry, physics, materials science, engineering and quantum technologies. This Review examines progress in this emerging field and presents a unified description of this new family of quantum emitters, as well as providing an outlook of the rapidly expanding research and applications of synthetic defects.
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Affiliation(s)
- Alexandra H. Brozena
- Department of Chemistry and Biochemistry, University of
Maryland, College Park, MD, USA
| | - Mijin Kim
- Department of Chemistry and Biochemistry, University of
Maryland, College Park, MD, USA
| | - Lyndsey R. Powell
- Department of Chemistry and Biochemistry, University of
Maryland, College Park, MD, USA
| | - YuHuang Wang
- Department of Chemistry and Biochemistry, University of
Maryland, College Park, MD, USA
- Maryland NanoCenter, University of Maryland, College Park,
MD, USA
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50
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Dhumal RS, Bommidi D, Salehinia I. Thermal Conductivity of Metal-Coated Tri-Walled Carbon Nanotubes in the Presence of Vacancies-Molecular Dynamics Simulations. NANOMATERIALS (BASEL, SWITZERLAND) 2019; 9:E809. [PMID: 31142028 PMCID: PMC6631831 DOI: 10.3390/nano9060809] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Revised: 05/20/2019] [Accepted: 05/24/2019] [Indexed: 06/09/2023]
Abstract
Variation in the thermal conductivity of a metal-coated tri-walled carbon nanotube (3WCNT), in thepresence of vacancies, was studied using non-equilibrium molecular dynamics simulations. A Two-Temperature model was used to account for electronic contribution to heat transfer. For 3WCNT with 0.5%and 1% random vacancies, there was 76%, and 86% decrease in the thermal conductivity, respectively. In thatorder, an overall ~66% and ~140% increase in the thermal conductivity was recorded when 3 nm thick coatingof metal (nickel) was deposited around the defective models. We have also explored the effects of tubespecific and random vacancies on thermal conductivity of the 3WCNT. The changes in thermal conductivityhave also been justified by the changes in vibrational density of states of the 3WCNT and the individualtubes. The results obtained can prove to be useful for countering the detrimental effects of vacancies incarbon nanotubes.
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Affiliation(s)
- Ravindra Sunil Dhumal
- Department of Mechanical Engineering, Northern Illinois University, DeKalb, IL 60115, USA.
| | - Dinesh Bommidi
- Department of Mechanical Engineering, University of Rochester, Rochester, NY 14627, USA.
| | - Iman Salehinia
- Department of Mechanical Engineering, Northern Illinois University, DeKalb, IL 60115, USA.
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