期刊
ACS NANO
卷 8, 期 8, 页码 8468-8476出版社
AMER CHEMICAL SOC
DOI: 10.1021/nn503027k
关键词
WSe2 nanotube; WS2(1-x)Se2x nanotube; chemical vapor deposition; carbon fiber; hydrogen evolution reaction
类别
资金
- 973 Program of the Ministry of Science and Technology of China [2012CB934103]
- 100-Talents Program of the Chinese Academy of Sciences [Y1172911ZX]
- National Natural Science Foundation of China [21373065]
- Beijing Natural Science Foundation [2144059]
Owing to the excellent potential for fundamental research and technical applications in optoelectronic devices and catalytic activity for hydrogen evolution reaction (HER), transition metal dichalcogenides have recently attracted much attention. Transition metal sulfide nanostructures have been reported and demonstrated promising application in transistors and photodetectors. However, the growth of transition metal selenide nanostructures and their applications has still been a challenge. In this work we successfully synthesized high-quality WSe2 nanotubes on carbon fibers via selenization. More importantly, through optimizing the growth conditions, ternary WS2(1-x)Se2x nanotubes were synthesized and the composition of S and Se can be systematically controlled. The as-grown WS2(1-x)Se2x nanotubes on carbon fibers, assembled as a working electrode, revealing low overpotential, high exchange current density, and small series resistance, exhibit excellent electrocatalytic properties for hydrogen evolution reaction. Our study provides the experimental groundwork for the synthesis of low-dimensional transition metal dichalcogenides and may open up exciting opportunities for their application in electronics, photoelectronics, and catalytic electrochemical reactions.
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