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

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.