Abstract
Herein, a novel ZnCo2O4/ZnIn2S4 composite was prepared through a novel one-pot refluxing wet chemistry process successfully. The phase structure, micro morphology and optical properties of photocatalyst were analyzed through XRD, SEM, XPS and UV-vis spectroscopy. The photocatalysis of the prepared specimens were assessed by the photocatalytic hydrogen evolution with visible-light (λ > 420 nm). Consequently, the ZnCo2O4/ZnIn2S4 photocatalyst displayed better photocatalysis than the original constituents for hydrogen evolution. Moreover, the corresponding maximized hydrogen production rate of ZnCo2O4/ZnIn2S4 composite loaded with 15% ZnCo2O4 was 3713.4 μmol · h−1 · g−1, which registered approximately 10.2 folds higher than pristine ZnIn2S4. Moreover, the ZnCo2O4/ZnIn2S4 composite manifested superior stability during the photocatalytic reactions. In addition, the underlying mechanism for the outstanding performance of hydrogen production was revealed as well. This research offers inspiration for the rational creation of high-efficiency photocatalytic agents for hydrogen evolution.
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