MoS2/CdS nanosheet-on-nanorod: An efficient photocatalyst for H2 generation from lactic acid decomposition

Abstract

The CdS shows high selectivity on H2 for photocatalytic lactic acid decomposition. However, the low efficiency caused by ultrafast charge recombination was not well addressed. Herein, MoS2/CdS nanoheterostructure with intimate contact interface was synthesized in-situ and used as an efficient photocatalyst for H2 generation. The optimum H2 generation rate of MoS2/CdS is 45.20 mmol g−1 h−1 which significantly boosts the activity of CdS (0.27 mmol g−1 h−1) by more than 167 folds. Band alignment of MoS2 and CdS promoting charge transfer and separation contributes to the enhanced catalytic activity, which was well verified by multiple characterization approaches.