材料科学
过电位
纳米技术
过渡金属
催化作用
碳纳米管
硒化物
磷化物
纳米结构
三元运算
电化学
电极
金属
化学
物理化学
冶金
程序设计语言
生物化学
硒
计算机科学
作者
Kai Xu,Feng Wang,Zhenxing Wang,Xueying Zhan,Qisheng Wang,Zhongzhou Cheng,Muhammad Ehsan Safdar,Jun He
出处
期刊:ACS Nano
[American Chemical Society]
日期:2014-08-14
卷期号:8 (8): 8468-8476
被引量:298
摘要
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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