Bi & Mo co-doped In2S3 nano-foam blocks for boosted photocatalytic hydrogen generation

Abstract

The design and construction of dual modifications on photocatalysts is a promising strategy to improve the photocatalytic properties. Herein, we fabricated the In2S3 nano-foam blocks with dual modifications of Bi & Mo co-doping and structure construction via a simple hydrothermal method to achieve an enhanced photocatalytic hydrogen generation. The results reveal that Bi & Mo co-doped In2S3 nano-foam blocks exhibit a high hydrogen generation rate of 5.45 mmol/g/h, which is 27 times that of bulk In2S3. Owing to the structural advantages, the enhanced specific surface area of the as-prepared nano-foam blocks improve the light harvesting efficiency of photocatalytic system. More importantly, the doped Bi and Mo atoms boost the improvement in the transfer and separation of photogenerated electrons and holes by introducing the impurity energy level. This work provides a reliable strategy for the design and fabrication of high-efficiency photocatalytic reaction system.