Synthesis of BiOBr/CeO2 Composites for Photocatalytic Degradation of Sulfisoxazole

doi:10.19894/j.issn.1000-0518.200231

Chinese Journal of Applied Chemistry ›› 2021, Vol. 38 ›› Issue (4): 422-430.DOI: 10.19894/j.issn.1000-0518.200231

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Synthesis of BiOBr/CeO₂ Composites for Photocatalytic Degradation of Sulfisoxazole

ZHAO Xing-Peng^1,2, WANG Ya-Qiao^1,2, GAO Sheng-Wang^2*, ZHU Jian-Chao¹, WANG Guo-Ying¹, XIA Xun-Feng², WANG Hong-Liang², WANG Shu-Ping²

¹College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China
²Chinese Research Academy of Environmental Sciences, Beijing 100012, China

Online:2021-06-01
Supported by:
Supported by the National Key Research and Development Projects (Nos.2018YFD1100505, 2019YFD1100201)

Abstract

Abstract: BiOBr/CeO₂ composites were successfully synthesized by the high-temperature calcination method coupled with the co-precipitation method and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and specific surface area and pore size analyzer (BET) etc. The composites were used for photocatalytic degradation of sulfisoxazole in solution. The results reveal that BiOBr/CeO₂composites have a stronger and broader absorption band in the visible-light region, and a higher efficiency of degradation of sulfisoxazole compared with CeO₂ and BiOBr. The radical trapping experiments indicate that the main active species in the degradation of sulfisoxazole are ·O^-₂ and H⁺. The load of CeO₂ can improve the utilization of visible light and the separation rate of photogenerated electron-hole pairs, which enhances the photocatalytic activity of composites. The recycling experiment shows that the BiOBr/CeO₂ composites have good stability and the catalytic activity does not decrease obviously after three cycles.

Key words: Photocatalytic degradation BiOBr/CeO₂, Sulfisoxazole, Photocatalytic mechanism

CLC Number:

ZHAO Xing-Peng, WANG Ya-Qiao, GAO Sheng-Wang, ZHU Jian-Chao, WANG Guo-Ying, XIA Xun-Feng, WANG Hong-Liang, WANG Shu-Ping. Synthesis of BiOBr/CeO₂ Composites for Photocatalytic Degradation of Sulfisoxazole[J]. Chinese Journal of Applied Chemistry, 2021, 38(4): 422-430.

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Synthesis of BiOBr/CeO₂ Composites for Photocatalytic Degradation of Sulfisoxazole

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