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Effect of Co-catalyst CdS on the Photocatalytic Performance of ZnMoO4 for Hydrogen Production

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Abstract

Zinc molybdate (ZnMoO4), a layer perovskite material, has the advantages of high stability, excellent optical and charge properties. However, its high band gap and high electron–hole recombination efficiency limit its application in the photocatalytic reduction field like hydrogen production. In this study, we used CdS as a co-catalyst and successfully prepared CdS/ZnMoO4 composite photocatalysts with different loadings. The hydrogen evolution rate of CdS/ZnMoO4 reached 530.2 µmol h−1 g−1, which was approximately 11 and 100 times more than rates of pure CdS and ZnMoO4 under the same conditions, respectively. It is the presence of CdS that contributed to this improved performance, which acted as an electron acceptor to separate electrons and holes. Besides, a reasonable mechanism was provided based on photoelectrochemical characterizations. CdS loading greatly improved the hydrogen evolution performance of ZnMoO4 under visible light, providing a direction to improving the performance of perovskite based photocatalysts.

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Acknowledgements

This work was supported by the China Postdoctoral Science Foundation (2020M671067), and Guangdong Basic and Applied Basic Research Foundation (2020A1515110591).

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  1. Ming Zheng and Bing Gao have contributed equally to this work.

Authors and Affiliations

  1. Key Laboratory of Organic Compound Pollution Control Engineering (MOE), School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, China

    Ming Zheng, Bing Gao, Suwen Tang, Min Zhu, Liang Tang & Minghong Wu

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  1. Ming Zheng
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  2. Bing Gao
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  3. Suwen Tang
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  4. Min Zhu
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  5. Liang Tang
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Correspondence to Ming Zheng.

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Zheng, M., Gao, B., Tang, S. et al. Effect of Co-catalyst CdS on the Photocatalytic Performance of ZnMoO4 for Hydrogen Production. Catal Surv Asia 26, 174–182 (2022). https://doi.org/10.1007/s10563-022-09357-9

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  • DOI: https://doi.org/10.1007/s10563-022-09357-9

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