CdS Nanowires Decorated with Ultrathin MoS2 Nanosheets as an Efficient Photocatalyst for Hydrogen Evolution

被引:213
|
作者
He, Jie [1 ]
Chen, Lang [1 ]
Wang, Fu [1 ]
Liu, Ying [1 ]
Chen, Peng [1 ]
Au, Chak-Tong [1 ]
Yin, Shuang-Feng [1 ]
机构
[1] Hunan Univ, Coll Chem & Chem Engn, State Key Lab Chemo Biosensing & Chemomet, Changsha 410082, Hunan, Peoples R China
基金
中国国家自然科学基金; 中国博士后科学基金;
关键词
composite materials; hydrogen evolution reaction; metal sulfides; nanostructures; photocatalysis; METAL DICHALCOGENIDE NANOSHEETS; ACTIVE EDGE SITES; VISIBLE-LIGHT; H-2; EVOLUTION; SINGLE-LAYER; NOBLE-METAL; ONE-POT; GRAPHENE; NANOCOMPOSITE; COCATALYST;
D O I
10.1002/cssc.201501544
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
CdS nanowires decorated with ultrathin MoS2 nanosheets were synthesized for the first time by ultrasonic exfoliation by using dimethylformamide as the dispersing agent. An excellent hydrogen evolution rate of 1914molh(-1) (20mg catalyst) under visible-light irradiation (400nm, approximate to 154mWcm(-1)) and an apparent quantum yield of 46.9% at =420nm were achieved over the MoS2/CdS composite. The presence of ultrathin MoS2 nanosheets (rich in active edge sites) on the CdS surface promotes the separation of photogenerated charge carriers and facilitates the surface processes of photocatalytic hydrogen evolution.
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页码:624 / 630
页数:7
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