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Enhanced photocatalytic reduction activity of BiOCl nanosheets loaded on β-Bi2O3

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Abstract

BiOCl nanosheets were loaded on the surface of β-Bi2O3 and its photocatalytic reduction activity was investigated. The composite displays excellent photocatalytic reduction activity. The NH3 yield rate of β-Bi2O3/BiOCl composite is nearly 25 times as that of pure BiOCl under Xenon lamp irradiation. The β-Bi2O3/BiOCl heterojunction presents superior photocatalytic reduction activity for the degradation of Cr(VI) ions, and Cr(VI) ions are totally removed in 18 min. The results of photocurrent and electrochemical impedance spectroscopy measurements reveal that the formation of β-Bi2O3/BiOCl heterojunction contributes to reduce the recombination of the photogenerated electrons and holes. The process of photocatalytic reduction activity over composite is explained by Z-scheme mechanism.

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Funding

This work was supported by the Foundation of Henan Educational Committee (No. 19A140010), Science and Technique Program of Henan Province (No. 182102210375) and Youth Foundation of Henan Normal University (No. XJ20190109).

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Authors and Affiliations

  1. National Demonstration Center for Experimental Physics Education, Henan Normal University, Xinxiang, 453007, China

    Jun Shang, Huige Chen, Bing Zhao, Fei Zhou & Hao Zhang

  2. College of Physics and Materials Science, Henan Normal University, Xinxiang, 453007, China

    Jun Shang & Xianwei Wang

  3. Henan Key Laboratory of Photovoltaic Materials, Xinxiang, 453007, China

    Jun Shang & Xianwei Wang

Authors
  1. Jun Shang
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  2. Huige Chen
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  3. Bing Zhao
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  4. Fei Zhou
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  5. Hao Zhang
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  6. Xianwei Wang
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Correspondence to Jun Shang or Xianwei Wang.

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Shang, J., Chen, H., Zhao, B. et al. Enhanced photocatalytic reduction activity of BiOCl nanosheets loaded on β-Bi2O3. J Mater Sci: Mater Electron 30, 17956–17962 (2019). https://doi.org/10.1007/s10854-019-02149-4

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