Enhancement of visible light photocatalytic pharmaceutical degradation and hydrogen evolution of Bi<SUB>5</SUB>O<SUB>7</SUB>Br by in situ disorder engineering

Fang-xiaXIE,Lu-luZHANG,XiaoZHANG,MeiZHANG,XuanJIAN,Jian-xinLIU,Xiao-chaoZHANG,Ya-wenWANG,RuiLI,Cai-meiFAN,

doi:10.1016/S1003-6326(23)66228-4

Transactions of Nonferrous Metals Society of China >

2023 , Vol. 33 >Issue 6: 1862 - 1872

DOI: https://doi.org/10.1016/S1003-6326(23)66228-4

Materials Science and Engineering

Enhancement of visible light photocatalytic pharmaceutical degradation and hydrogen evolution of Bi₅O₇Br by in situ disorder engineering

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Fang-xia XIE^1,2, Lu-lu ZHANG², Xiao ZHANG¹, Mei ZHANG², Xuan JIAN³, Jian-xin LIU², Xiao-chao ZHANG², Ya-wen WANG², Rui LI^1,2, Cai-mei FAN^1,2

1. College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China;
2. College of Chemical Engineering and Technology, Taiyuan University of Technology, Taiyuan 030024, China;
3. Shaanxi Key Laboratory of Chemical Reaction Engineering, College of Chemistry and Chemical Engineering, Yan’an University, Yan’an 716000, China

Online published: 2023-06-25

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Abstract

In order to simultaneously solve the problems of the poor light absorption capacity and high recombination rate of photogenerated carriers, Bi₅O₇Br photocatalyst with abundant ordered/disordered structures (O/D-Bi₅O₇Br) was prepared through a simple in situ disorder engineering. The prepared samples were characterized by XRD, TEM, HRTEM, SAED, XPS, UV-Vis diffuse reflectance spectra (DRS), and the activity was evaluated by photocatalytic degradation of tetracycline hydrochloride (TC) and hydrogen evolution under visible light irradiation. Results revealed that the ordered/disordered structure not only enhances the light absorption ability, uplifts conduction band position, facilitates the transfer and separation of photogenerated carriers, but also offers abundant unsaturated atoms as active sites for the photocatalytic process. Therefore, O/D-Bi₅O₇Br exhibits a high hydrogen evolution rate of 38.12 μmol/(g？h) and superior TC degradation rate of 86% within 135 min.

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Fang-xiaXIE,Lu-luZHANG,XiaoZHANG,MeiZHANG,XuanJIAN,Jian-xinLIU,Xiao-chaoZHANG,Ya-wenWANG,RuiLI,Cai-meiFAN, . Enhancement of visible light photocatalytic pharmaceutical degradation and hydrogen evolution of Bi₅O₇Br by in situ disorder engineering[J]. Transactions of Nonferrous Metals Society of China, 2023 , 33(6) : 1862 -1872 . DOI: 10.1016/S1003-6326(23)66228-4

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