Roles of MoS2 and Graphene as Cocatalysts in the Enhanced Visible‐Light Photocatalytic H2 Production Activity of Multiarmed CdS Nanorods

摘要: The incorporation of cocatalysts into semiconductors is proved to be an effective approach improving the efficiency photocatalytic H2 production. Noble metals such as Pt have been widely used and can significantly improve performance However, owing high cost low abundance, use in practical applications restricted. Herein, we report two well-known 2 D layered materials, MoS2 graphene, highly active for production CdS-based systems. CdS–MoS2 CdS-MoS2–graphene nanocomposites were prepared by using a facile two-step solvothermal method, morphologies CdS well controlled. as-prepared binary nanocomposite exhibits enhanced visible-light activity lactic acid aqueous solution compared with CdS–graphene conventional platinized photocatalyst. Moreover, ternary CdS–MoS2–graphene achieves highest 621.3 μmol h−1 apparent quantum 54.4 % at λ=420 nm. primarily attributed positive synergistic effect between graphene sheets thin nanoplates. accelerate efficient electron transfer from nanorods edge sites nanoplates, nanosized facilitate photogenerated electrons participating mechanisms MoS2- and/or graphene-modified proposed electrochemical analysis photoluminescence measurement.