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Enhanced hydrogen evolution reaction over molybdenum carbide nanoparticles confined inside single-walled carbon nanotubes

文献类型：期刊论文

作者Cui, Tingting1,2; Pan, Xiulian1; Yu, Tie1; Fu, Qiang1; Bao, Xinhe1; Dong, Jinhu1,2
刊名JOURNAL OF ENERGY CHEMISTRY
出版日期2019
卷号28页码:123-127
关键词Single-walled carbon nanotubes Confined catalysis Molybdenum carbide Nanoparticles Hydrogen evolution reaction
ISSN号2095-4956
DOI10.1016/j.jechem.2018.03.006
通讯作者Pan, Xiulian(panxl@dicp.ac.cn) ; Bao, Xinhe(xhbao@dicp.ac.cn)
英文摘要Carbon nanotubes (CNTs) have shown as unique nanoreactors to tune the catalytic activity of confined nano-catalysts. Here we report that the catalytic performance of molybdenum carbide nanoparticles (MoCx NPs) for the hydrogen evolution reaction (HER) process can be enhanced by encapsulation within single-walled carbon nanotubes (SWNTs) with a diameter of 1-2 nm. The catalyst with MoCx NPs located on the interior surface of SWNTs (MoCx@SWNTs) exhibits a lower onset over-potential and a smaller Tafel slope than the one with MoCx NPs attached on the exterior surface (MoCx/SWNTs). This is likely attributed to the much smaller particle size and the more reduced states of the confined MoCx NPs, as well as the larger specific surface area of MoCx@SWNTs compared with MoCx/SWNTs. In addition, the electronic structure of the confined MoCx NPs might be modified by the confinement effects of SWNTs, and hence the adsorption free energy of H atoms on the confined MoCx NPs, which could also contribute to their higher performance. These results suggest that the SWNTs can be further explored for constructing novel catalysts with beneficial catalytic performance. (C) 2018 Published by Elsevier B.V. and Science Press on behalf of Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences
WOS关键词HIGHLY EFFICIENT ELECTROCATALYSTS ; TRANSITION-METAL CARBIDES ; CATALYSTS ; ENCAPSULATION ; CHEMISTRY ; WATER ; MO2C ; NANOSHEETS ; OXIDATION ; SUPPORT
资助项目National Natural Science Foundation of China[21425312] ; National Natural Science Foundation of China[21688102] ; National Natural Science Foundation of China[21621063] ; National Natural Science Foundation of China[21573224]
WOS研究方向Chemistry ; Energy & Fuels ; Engineering
语种英语
WOS记录号WOS:000450370100017
出版者ELSEVIER SCIENCE BV
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
源URL[http://cas-ir.dicp.ac.cn/handle/321008/166636]  
专题大连化学物理研究所_中国科学院大连化学物理研究所
通讯作者Pan, Xiulian; Bao, Xinhe
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Liaoning, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Cui, Tingting,Pan, Xiulian,Yu, Tie,et al. Enhanced hydrogen evolution reaction over molybdenum carbide nanoparticles confined inside single-walled carbon nanotubes[J]. JOURNAL OF ENERGY CHEMISTRY,2019,28:123-127.
APA Cui, Tingting,Pan, Xiulian,Yu, Tie,Fu, Qiang,Bao, Xinhe,&Dong, Jinhu.(2019).Enhanced hydrogen evolution reaction over molybdenum carbide nanoparticles confined inside single-walled carbon nanotubes.JOURNAL OF ENERGY CHEMISTRY,28,123-127.
MLA Cui, Tingting,et al."Enhanced hydrogen evolution reaction over molybdenum carbide nanoparticles confined inside single-walled carbon nanotubes".JOURNAL OF ENERGY CHEMISTRY 28(2019):123-127.

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来源：大连化学物理研究所

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