Hydrothermally Constructed MoS₂/ZnIn₂S₄ Heterostructure for Promotion of Photocatalytic H₂ Evolution

Abstract

Abstract The integration of the second material with unique properties into original material to fabricate heterostructure represents an effective strategy to enhance photocatalytic H 2 evolution. Herein, we synthesized a MoS 2 /ZnIn 2 S 4 heterostructured photocatalyst using a two‐step hydrothermal method. The resulting MoS 2 /ZnIn 2 S 4 displayed the flower‐like morphology formed by staked nanosheets, significantly accelerating photocatalytic H 2 evolution performance. The optimal MoS 2 /ZnIn 2 S 4 (ZIS/Mo‐50) achieved remarkable photocatalytic H 2 production rate of 20.5 mmol g −1 h −1 , which is 18.5 times higher than that of pristine ZnIn 2 S 4 . Further characterizations proved that the formation of the MoS 2 /ZnIn 2 S 4 heterostructure adjusted the energy band structure of ZnIn 2 S 4 , enhancing its light absorption capability. Additionally, the heterostructure facilitated efficient charge separation and transfer. These enhancements notably boosted the photocatalytic H 2 evolution, providing a promising example for designing efficient photocatalysts for H 2 evolution.