CdS Nanowires Decorated with Ultrathin MoS2 Nanosheets as an Efficient Photocatalyst for Hydrogen Evolution
CdS Nanowires Decorated with Ultrathin MoS2 Nanosheets as an Efficient Photocatalyst for Hydrogen Evolution
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超薄 MoS2 纳米片修饰的 CdS 纳米线作为高效析氢光催化剂
DOI：
10.1002/cssc.201501544
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发表时间：
2016-03-21
期刊：
影响因子：
8.4
通讯作者：
Yin, Shuang-Feng
中科院分区：
文献类型：
--
作者：
He, Jie;Chen, Lang;Yin, Shuang-Feng
以二甲基甲酰胺为分散剂，采用超声剥离法制备了超薄MoS_2修饰的硫化镉纳米线。在可见光(400 nm，约154mW·cm~(-1))照射下，MoS_2/CDS复合材料的表观量子产率为46.9%，表观量子产率为46.9%。超薄的MoS_2纳米片(富含活性边缘位置)的存在促进了光生载流子的分离，促进了光催化析氢的表面过程。
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.