Abstract
The light absorption capacity and charge carrier separation of photocatalyst play important roles in photocatalytic hydrogen evolution activity. Metal sulfides generally show superior visible absorption; however, the charge separation efficiency is low. Formation of metal sulfide solid solution with multiple components can further enhance the light absorption; more importantly, formation of heterojunctions in nanoscale within the solid photocatalyst is an efficient approach to improve the separation efficiency of photoinduced electrons and holes. Here, the Zn1-xCrxIn2S4 solid-solution photocatalysts synthesized via a facial hydrothermal method exhibited enhanced photocatalytic hydrogen evolution activity attributed to the LSPR effect originated from amorphous domains and promoted interfacial charge transfer between amorphous domains and crystalline regions. Zn1-xCrxIn2S4 exhibited 2.2 times photocatalytic hydrogen production activity than ZnIn2S4. This work provides an avenue to construct photocatalysts with improved hydrogen evolution activity via formation of ordered-disordered domain heterojunctions combined LSPR.
Published Version
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