He Jie, Chen Lang, Wang Fu, Liu Ying, Chen Peng, Au Chak-Tong, Yin Shuang-Feng
State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, P.R. China.
ChemSusChem. 2016 Mar 21;9(6):624-30. doi: 10.1002/cssc.201501544. Epub 2016 Feb 16.
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 1914 μmol h(-1) (20 mg catalyst) under visible-light irradiation (λ ≥ 400 nm, ≈ 154 mW cm(-1) ) and an apparent quantum yield of 46.9% at λ=420 nm 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.
首次通过超声剥离法，以二甲基甲酰胺作为分散剂，合成了负载超薄二硫化钼纳米片的硫化镉纳米线。在可见光照射（λ≥400nm，≈154mW cm(-1)）下，二硫化钼/硫化镉复合材料实现了1914μmol h(-1)（20mg催化剂）的优异析氢速率，在λ=420nm时表观量子产率达到46.9%。硫化镉表面超薄二硫化钼纳米片（富含活性边缘位点）的存在促进了光生电荷载流子的分离，并有利于光催化析氢的表面过程。
