Microwave-assistant synthesis of Au/SnS2 nanoflowers as improved visible-light responsive photocatalysts

Abstract In this work, high quality two-dimension (2D) SnS 2 nanoflakes as visible-light responsive photocatalysts were prepared by a facile solvothermal method. And Au/SnS 2 composites were fabricated by a rapid microwave-assisted process. The Au/SnS 2 heterojunction showed excellent photocatalytic activities in comparison with the bare SnS 2 . The optimal sample named Au/SnS 2 -4 can degrade 92.9% MB after 1 h under visible light irradiation. The enhanced photocatalytic activities are due to the LSPR effect of Au NPs and the special structure of SnS 2 . The theoretical investigations showed that electrons can transfer from the SnS 2 to the Au across the interface. Finally, a synergetic photocatalytic mechanism was proposed.