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Designing heterojunction catalysts for the production of hydrogen peroxide is a crucial strategy for advancing the field of artificial photosynthesis. However, conventional type-II heterojunction catalysts often face challenges of weak redox ability and the utilization of charge carriers. Herein, a distinct strategy is proposed that combines type-II heterojunctions with a localized surface plasmon resonance (LSPR) effect, thereby cooperatively enhancing the utilization of high-energy electrons through the hot electron injection process. The optimized catalyst MoO3–x-ZnIn2S4 (VMZS) exhibits H2O2 production (47.2 μmol g–1 min–1) under simulated sunlight (AM1.5G, 100 mW cm–2) with a filter (λ > 350 nm) and an apparent quantum efficiency of 0.5% at 940 nm, significantly exceeding previously reported state-of-the-art catalysts. Moreover, the prepared film of VMZS enables a H2O2 production rate of 338.1 μM h–1. This work provides a new insight on designing heterojunction catalyst systems through the synergistic contribution of the type-II carrier transfer route and LSPR effect.
Xu et al. (Wed,) studied this question.