Hierarchical ZnIn2S4/MoSe2 Nanoarchitectures for Efficient Noble‐Metal‐Free Photocatalytic Hydrogen Evolution under Visible Light

A highly efficient visible‐light‐driven photocatalyst is urgently necessary for photocatalytic hydrogen generation through water splitting. Herein, ZnIn2S4 hierarchical architectures assembled as ultrathin nanosheets were synthesized by a facile one‐pot polyol approach. Subsequently, the two‐dimensional‐network‐like MoSe2 was successfully hybridized with ZnIn2S4 by taking advantage of their analogous intrinsic layered morphologies. The noble‐metal‐free ZnIn2S4/MoSe2 heterostructures show enhanced photocatalytic H2 evolution compared to pure ZnIn2S4. It is noteworthy that the optimum nanocomposite of ZnIn2S4/2 % MoSe2 photocatalyst displays a high H2 generation rate of 2228 μmol g−1 h−1 and an apparent quantum yield (AQY) of 21.39 % at 420 nm. This study presents an unprecedented ZnIn2S4/MoSe2 metal‐sulfide–metal‐selenide hybrid system for H2 evolution. Importantly, the present efficient hybridization strategy reveals the potential of hierarchical nanoarchitectures for a multitude of energy storage and solar energy conversion applications.