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Zhou R, Shen S, Zhong Y, Liu P, Zhang Y, Zhang L, Wang X, Xia X, Tu J. Co-construction of advanced sulfur host by implanting titanium carbide into Aspergillus niger spore carbon. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2021.11.032] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Zhang Y, Deng S, Shen Y, Liu B, Pan G, Liu Q, Wang X, Wang Y, Xia X, Tu J. Construction of 1T-MoSe 2 /TiC@C Branch-Core Arrays as Advanced Anodes for Enhanced Sodium Ion Storage. CHEMSUSCHEM 2020; 13:1575-1581. [PMID: 31646763 DOI: 10.1002/cssc.201902565] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Revised: 10/23/2019] [Indexed: 06/10/2023]
Abstract
The use of active sites and reaction kinetics of MoSe2 anodes for sodium ion batteries (SIBs) are highly related to the phase components (1T and 2H phases) and electrode architecture. This study concerns the design and fabrication of wrinkled 1T-MoSe2 nanoflakes anchored on highly conductive TiC@C nanorods to form 1T-MoSe2 /TiC@C branch-core arrays by a powerful chemical vapor deposition (CVD)-solvothermal method. The 1T-MoSe2 branch can be easily transformed into its 2H-MoSe2 counterpart after a facile annealing process. In comparison to 2H-MoSe2 , 1T-MoSe2 has larger interlayer spacing and higher electronic conductivity, which are beneficial for the acceleration of reaction kinetics and capacity improvement. In addition, direct growth of 1T-MoSe2 nanoflakes on the TiC@C skeleton not only enhance the electrical conductivity, but also contribute to reinforced structural stability. Accordingly, 1T-MoSe2 /TiC@C branch-core arrays are demonstrated with higher capacity and better rate performance (184 mAh g-1 at 10 A g-1 ) and impressive durability over 500 cycles with a capacity retention of approximately 91.8 %. This phase modulation plus branch-core design provides a general method for the synthesis of other high-performance electrode materials for application in electrochemical energy storage.
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Affiliation(s)
- Yan Zhang
- School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, P.R. China
| | - Shengjue Deng
- School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, P.R. China
| | - Yanbin Shen
- School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, P.R. China
| | - Bo Liu
- School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, P.R. China
| | - Guoxiang Pan
- Department of Materials Chemistry, Huzhou University, Huzhou, 313000, P.R. China
| | - Qi Liu
- Department of Physics, City University of Hong Kong, Kowloon, 999077, Hong Kong, China
| | - Xiuli Wang
- School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, P.R. China
| | - Yadong Wang
- School of Engineering, Nanyang Polytechnic, 569830, Singapore, Singapore
| | - Xinhui Xia
- School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, P.R. China
- Key Laboratory of Advanced Energy Materials Chemistry, (Ministry of, Education), College of Chemistry, Nankai University, Tianjin, 300071, P.R. China
| | - Jiangping Tu
- School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, P.R. China
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Saravanan A, Huang BR, Manoharan D, Lin IN. High-Performance Electron Field Emitters and Microplasma Cathodes Based on Conductive Hybrid Granular Structured Diamond Materials. ACS APPLIED MATERIALS & INTERFACES 2017; 9:4916-4925. [PMID: 28084726 DOI: 10.1021/acsami.6b12375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
High-performance diamond electron field emitters (EFEs) with extremely low turn-on field (E0 = 1.72 V/μm) and high current density (1.70 mA/cm2 at an applied field of 3.86 V/μm) were successfully synthesized by using a modified two-step microwave plasma chemical deposition process. Such emitters possess EFE properties comparable with most of carbon- or semiconductor-based EFE materials, but with markedly better lifetime stability. The superb EFE behavior of these materials was achieved owing to the reduction in the diamond-to-Si interfacial resistance and the increase in the conductivity of the bulk diamond films (HBD-400 V) via the applications of high bias voltage during the preparation of the ultrananocrystalline diamond (UNCD) primary layer and the subsequent plasma post-treatment (PPT) process, respectively. The superior EFE properties along with enhanced robustness of HBD-400 V films compared with the existing diamond-based EFE materials rendered these materials of greater potential for applications in high brightness display and multifunctional microplasma.
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Affiliation(s)
- Adhimoorthy Saravanan
- Graduate Institute of Electro-Optical Engineering and Department of Electronic and Computer Engineering, National Taiwan University of Science and Technology , Taipei 106, Taiwan, ROC
| | - Bohr-Ran Huang
- Graduate Institute of Electro-Optical Engineering and Department of Electronic and Computer Engineering, National Taiwan University of Science and Technology , Taipei 106, Taiwan, ROC
| | | | - I-Nan Lin
- Department of Physics, Tamkang University , Tamsui 251, Taiwan, ROC
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Xu J, Xu N, Zhang X, Gao B, Zhang B, Peng X, Fu J, Chu PK, Huo K. In situ fabrication of Ni nanoparticles on N-doped TiO2 nanowire arrays by nitridation of NiTiO3 for highly sensitive and enzyme-free glucose sensing. J Mater Chem B 2017; 5:1779-1786. [DOI: 10.1039/c6tb02784a] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel strategy for Ni NPs/TiOxNy NWAs by nitridation of NiTiO3 NWAs is designed for highly sensitive and selective non-enzymatic glucose sensing.
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Affiliation(s)
- Jiangwen Xu
- The State Key Laboratory of Refractories and Metallurgy
- School of Materials and Metallurgy
- Wuhan University of Science and Technology
- Wuhan 430081
- P. R. China
| | - Na Xu
- The State Key Laboratory of Refractories and Metallurgy
- School of Materials and Metallurgy
- Wuhan University of Science and Technology
- Wuhan 430081
- P. R. China
| | - Xuming Zhang
- The State Key Laboratory of Refractories and Metallurgy
- School of Materials and Metallurgy
- Wuhan University of Science and Technology
- Wuhan 430081
- P. R. China
| | - Biao Gao
- The State Key Laboratory of Refractories and Metallurgy
- School of Materials and Metallurgy
- Wuhan University of Science and Technology
- Wuhan 430081
- P. R. China
| | - Ben Zhang
- The State Key Laboratory of Refractories and Metallurgy
- School of Materials and Metallurgy
- Wuhan University of Science and Technology
- Wuhan 430081
- P. R. China
| | - Xiang Peng
- Department of Materials Science and Physics
- City University of Hong Kong
- Kowloon
- China
| | - Jijiang Fu
- The State Key Laboratory of Refractories and Metallurgy
- School of Materials and Metallurgy
- Wuhan University of Science and Technology
- Wuhan 430081
- P. R. China
| | - Paul K. Chu
- Department of Materials Science and Physics
- City University of Hong Kong
- Kowloon
- China
| | - Kaifu Huo
- Wuhan National Laboratory for Optoelectronics
- Huazhong University of Science and Technology
- Wuhan
- P. R. China
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Hu L, Peng X, Huo K, Chen R, Fu J, Li Y, Lee LYS, Wong KY, Chu PK. Dominant Factors Governing the Electron Transfer Kinetics and Electrochemical Biosensing Properties of Carbon Nanofiber Arrays. ACS APPLIED MATERIALS & INTERFACES 2016; 8:28872-28879. [PMID: 27715002 DOI: 10.1021/acsami.6b10100] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Carbon-based electrodes have been widely used in electroanalysis for more than half a century, but the factors governing the heterogeneous electron-transfer (HET) rate are still unclear. The effects of the exposed edge plane site density, inherent resistance of the carbon electrode, and adjustable resistors on the HET kinetics of several outer- and inner-sphere redox couples including [Fe(CN)6]3-/4-, Ru(NH3)63+/2+, Fe3+/2+, dopamine, ascorbic acid, and uric acid are investigated using three kinds of carbon electrodes composed of core-shell quasi-aligned nanofiber arrays (QANFAs). The internal resistance is found to be a key factor affecting the HET kinetics and electrochemical biosensing properties. The electrodes exhibit high selectivity and sensitivity in dopamine detection in the presence of ascorbic acid and uric acid. In addition to the promising application to electrochemical biosensing, the core-shell TiC/C QANFAs encompassing a highly electroactive carbon shell and conductive TiC core provide insights into the design and construction of the ideal carbon electrode.
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Affiliation(s)
- Liangsheng Hu
- Wuhan National Laboratory for Optoelectronics (WNLO) and School of Optical and Electronic Information, Huazhong University of Science and Technology , Wuhan 430074, China
- Department of Applied Biology and Chemical Technology and the State Key Laboratory of Chirosciences, The Hong Kong Polytechnic University , Hung Hom, Hong Kong, China
| | - Xiang Peng
- Department of Physics and Materials Science, City University of Hong Kong , Tat Chee Avenue, Kowloon, Hong Kong, China
| | - Kaifu Huo
- Wuhan National Laboratory for Optoelectronics (WNLO) and School of Optical and Electronic Information, Huazhong University of Science and Technology , Wuhan 430074, China
| | - Rongsheng Chen
- The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology , Wuhan 430081, China
| | - Jijiang Fu
- The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology , Wuhan 430081, China
| | - Yong Li
- Department of Applied Biology and Chemical Technology and the State Key Laboratory of Chirosciences, The Hong Kong Polytechnic University , Hung Hom, Hong Kong, China
| | - Lawrence Yoon Suk Lee
- Department of Applied Biology and Chemical Technology and the State Key Laboratory of Chirosciences, The Hong Kong Polytechnic University , Hung Hom, Hong Kong, China
| | - Kwok-Yin Wong
- Department of Applied Biology and Chemical Technology and the State Key Laboratory of Chirosciences, The Hong Kong Polytechnic University , Hung Hom, Hong Kong, China
| | - Paul K Chu
- Department of Physics and Materials Science, City University of Hong Kong , Tat Chee Avenue, Kowloon, Hong Kong, China
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Li J, Wang G, Geng H, Zhu H, Zhang M, Di Z, Liu X, Chu PK, Wang X. CVD Growth of Graphene on NiTi Alloy for Enhanced Biological Activity. ACS APPLIED MATERIALS & INTERFACES 2015; 7:19876-19881. [PMID: 26323051 DOI: 10.1021/acsami.5b06639] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
From the perspective of surface modification of biomaterials, graphene is very promising because of its unique physical and chemical properties. Herein, we report direct in situ fabrication of graphene on nitinol (NiTi) shape memory alloy by chemical vapor deposition (CVD) and investigate both the growth mechanism as well as surface bioactivity of the modified alloy. Growth of the graphene layer is independent of Ni but is rather correlated with the formation of the TiC phase on the surface. Graphene nucleates and grows on this carbide layer during exposure to CH4. The graphene layer is observed to promote the osteogenesis differentiation of mesenchymal stem cells and surface bioactivity. The use of graphene as a bioactive layer is a viable approach to improving the surface properties of NiTi-based dental and orthopedic implants and components.
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Affiliation(s)
- Jinhua Li
- University of Chinese Academy of Sciences , Beijing 100049, China
| | - Gang Wang
- School of Physical Science and Technology, Lanzhou University , Lanzhou 730000, China
| | - Hao Geng
- University of Chinese Academy of Sciences , Beijing 100049, China
| | | | | | | | | | - Paul K Chu
- Department of Physics and Materials Science, City University of Hong Kong , Tat Chee Avenue, Kowloon, Hong Kong China
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Zhang X, Peng X, Li W, Li L, Gao B, Wu G, Huo K, Chu PK. Robust electrodes based on coaxial TiC/C-MnO2 core/shell nanofiber arrays with excellent cycling stability for high-performance supercapacitors. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2015; 11:1847-1856. [PMID: 25546735 DOI: 10.1002/smll.201402519] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2014] [Revised: 10/20/2014] [Indexed: 06/04/2023]
Abstract
A coaxial electrode structure composed of manganese oxide-decorated TiC/C core/shell nanofiber arrays is produced hydrothermally in a KMnO4 solution. The pristine TiC/C core/shell structure prepared on the Ti alloy substrate provides the self-sacrificing carbon shell and highly conductive TiC core, thus greatly simplifying the fabrication process without requiring an additional reduction source and conductive additive. The as-prepared electrode exhibits a high specific capacitance of 645 F g(-1) at a discharging current density of 1 A g(-1) attributable to the highly conductive TiC/C and amorphous MnO2 shell with fast ion diffusion. In the charging/discharging cycling test, the as-prepared electrode shows high stability and 99% capacity retention after 5000 cycles. Although the thermal treatment conducted on the as-prepared electrode decreases the initial capacitance, the electrode undergoes capacitance recovery through structural transformation from the crystalline cluster to layered birnessite type MnO2 nanosheets as a result of dissolution and further electrodeposition in the cycling. 96.5% of the initial capacitance is retained after 1000 cycles at high charging/discharging current density of 25 A g(-1). This study demonstrates a novel scaffold to construct MnO2 based SCs with high specific capacitance as well as excellent mechanical and cycling stability boding well for future design of high-performance MnO2-based SCs.
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Affiliation(s)
- Xuming Zhang
- Department of Physics and Materials Science, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, P. R. China
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Zhang X, Li L, Peng X, Chen R, Huo K, Chu PK. Non-enzymatic hydrogen peroxide photoelectrochemical sensor based on WO3 decorated core–shell TiC/C nanofibers electrode. Electrochim Acta 2013. [DOI: 10.1016/j.electacta.2013.07.064] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Chen R, Li Y, Huo K, Chu PK. Microelectrode arrays based on carbon nanomaterials: emerging electrochemical sensors for biological and environmental applications. RSC Adv 2013. [DOI: 10.1039/c3ra43033b] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
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Zhang X, Huo K, Peng X, Xu R, Li P, Chen R, Zheng G, Wu Z, Chu PK. WO3 nanoparticles decorated core–shell TiC–C nanofiber arrays for high sensitive and non-enzymatic photoelectrochemical biosensing. Chem Commun (Camb) 2013; 49:7091-3. [DOI: 10.1039/c3cc42583e] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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