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In situ synthesis of adsorptive β-Bi2O3/BiOBr photocatalyst with enhanced degradation efficiency

  • Shizi Wu (a1), Yao Xie (a1), Xianmei Zhang (a1), Zhaohui Huang (a1), Yangai Liu (a1), Minghao Fang (a1), Xiaowen Wu (a1) and Xin Min (a1)...

Abstract

Bismuth (Bi)-based photocatalytic materials are widely used in the field of photocatalytic degradation of wastewater. In this study, β-Bi2O3/BiOBr heterojunction photocatalysts were prepared by an in situ chemical transformation method. BiOBr molecules are arrayed to cross each other to form a pore around β-Bi2O3. The prepared photocatalyst had a large specific surface area and excellent adsorption and photocatalytic properties. The β-Bi2O3/BiOBr with a molecular ratio of 11.1% had the highest catalytic activity. The result of a degradation experiment, performed with Rhodamine B (RhB) as the target pollutant, revealed that the degradation rate reached 99.85% after 25 min under visible light irradiation. The pore structure can adsorb contaminants and the heterojunction facilitates the separation of photogenerated electron–hole pairs to enhance the photocatalytic properties. The high adsorption performance and heterojunction achieved higher photocatalytic efficiency. This semiconductor photocatalyst with high adsorption performance provides a new approach to control water pollution.

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Corresponding author

a)Address all correspondence to these authors. e-mail: zhangxianmei@chinapowder.com

References

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In situ synthesis of adsorptive β-Bi2O3/BiOBr photocatalyst with enhanced degradation efficiency

  • Shizi Wu (a1), Yao Xie (a1), Xianmei Zhang (a1), Zhaohui Huang (a1), Yangai Liu (a1), Minghao Fang (a1), Xiaowen Wu (a1) and Xin Min (a1)...

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