Constructing 3D flower-like hierarchical ZnO/SnS2 heterojunction by decorating SnS2 nanosheets with ZnO nanoclusters as synergistic photocatalyst

Abstract Flower-like ZnO/SnS 2 heterojunction was constructed as photocatalyst. The heterojunction shows hierarchical architecture structure, in which SnS 2 nanosheets are uniformly decorated by ZnO nanoclusters. Compared to SnS 2 , the ZnO/SnS 2 heterojunction displays improved photocatalytic efficiency for degradation of organic dye MB and hydrogen evolution. ZnO/SnS 2 heterojunction reveals an optimal hydrogen production rate of 346.1 μ mol h −1 g −1 , about 2.7 times higher than SnS 2 . The boosting photocatalytic performance is ascribed to the special hierarchical structure and synergetic effect of ZnO/SnS 2 heterojunction, which can enhance the specific surface area and promote the separation of photogenerated electron–hole pairs.