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

The integration of the second material with unique properties into original material to fabricate heterostructure represents an effective strategy to enhance photocatalytic H2 evolution. Herein, we synthesized a MoS2/ZnIn2S4 heterostructured photocatalyst using a two‐step hydrothermal method. The resulting MoS2/ZnIn2S4 displayed the flower‐like morphology formed by staked nanosheets, significantly accelerating photocatalytic H2 evolution performance. The optimal MoS2/ZnIn2S4 (ZIS/Mo‐50) achieved remarkable photocatalytic H2 production rate of 20.5 mmol·g‐1·h‐1, which is 18.5 times higher than that of pristine ZnIn2S4. Further characterization proved that the formation of the MoS2/ZnIn2S4 heterostructure adjusted the energy band structure of ZnIn2S4, enhancing its light absorption capability. Additionally, the heterostructure facilitated efficient charge separation and transfer. These enhancements notably boosted the photocatalytic H2 evolution, providing a promising example for designing efficient photocatalysts for H2 evolution.