MoS2 Nanosheet-Modified CuInS2 Photocatalyst for Visible Light-Driven Hydrogen Production from Water

Exploiting photocatalysts respond to visible light is of huge challenge for photocatalytic H-2 production. Here, we synthesize a new composite material consisting of few-layer MoS2 nanosheets grown on CuInS, surface as an efficient photocatalyst for solar H-2 generation. The photocatalytic results demonstrate that the 3 wt% MoS2/CuInS2, photocatalyst exhibits the highest H, generation rate of 316 mu mol h(-1) g(-1) under visible light irradiation, which is almost 28 times higher than that of CuInS2. Importantly, the MoS2/CuInS2 photocatalyst shows a much higher photocatalytic activity than that of Pt-loaded CuInS2 photocatalyst. The enhanced photocatalytic activities of MoS2/CuInS2 photocatalysts can be attributed to the improved charge separation at the interface of MoS2 and CuInS2. which is demonstrated by the significant enhancement of photocurrent responses in MoS2/CuInS2 photoelectrodes. This work presents a noble-metal-free photocatalyst that responds to visible light for solar H, generation.