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

doi:10.1016/j.jechem.2018.03.006

	Enhanced hydrogen evolution reaction over molybdenum carbide nanoparticles confined inside single-walled carbon nanotubes
	Cui, Tingting 1,2; Pan, Xiulian 1; Yu, Tie 1; Fu, Qiang 1; Bao, Xinhe 1; Dong, Jinhu 1,2
刊名	JOURNAL OF ENERGY CHEMISTRY
	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
DOI	10.1016/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
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关键词	HIGHLY EFFICIENT ELECTROCATALYSTS ; TRANSITION-METAL CARBIDES ; CATALYSTS ; ENCAPSULATION ; CHEMISTRY ; WATER ; MO2C ; NANOSHEETS ; OXIDATION ; SUPPORT
WOS研究方向	Chemistry ; Energy & Fuels ; Engineering
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000450370100017
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
内容类型	期刊论文
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.