MoS2-2xSe2x Nanosheets Grown on Hollow Carbon Spheres for Enhanced Electrochemical Activity

被引：15
作者：
Luan, Xinxin [1 ]
Zhu, Kaili [1 ]
Zhang, Xiao [2 ,3 ]
Yang, Ping [1 ]
机构：
[1] Univ Jinan, Sch Mat Sci & Engn, Jinan 250022, Peoples R China
[2] Curtin Univ, Fuels & Energy Technol Inst, Perth, WA 6845, Australia
[3] Curtin Univ, Western Australia Sch Mines Minerals Energy & Che, Perth, WA 6845, Australia
来源：
LANGMUIR | 2021年 / 37卷 / 27期
基金：
中国国家自然科学基金;
关键词：
EFFICIENT HYDROGEN EVOLUTION; DOPED MOS2; EDGE SITES; WATER; ELECTROCATALYSTS; MOS2(1-X)SE2X; REDUCTION; GRAPHENE; CATALYST; ARRAYS;
D O I：
10.1021/acs.langmuir.1c01122
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Electrochemical catalysts with high conductivity and low reaction potential are respected. In this paper, hollow carbon spheres (HCSs) were homogeneously coated with Se-doped MoS2(MoS2-2xSe2x) nanosheets by hydrothermal synthesis. The HCSs reduced the agglomeration of MoS2-2xSe2x nanosheets and improved their conductivity. Compared with the MoS2 modified samples, Se doping increased the interlayer spacing which provided more active catalytic sites and improved the charge transfer. Thus, MoS2-2xSe2x-decorated samples revealed enhanced electrocatalytic activity. The composition of MoS2-2xSe2x-nanosheets was adjusted by changing the ratios of sulfur and selenium precursors. In the case of a Se/S molar ratio of 0.1, the composite of HCS decorated with MoS2-2xSe2x nanosheets (C@MoS2-2xSe2x) revealed the lowest overpotential and the smallest Tafel slope.
引用
收藏
页码：8314 / 8322
页数：9
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