Preparation of Bi2O3/BiOI composite photocatalytic material by solvothermal method and its application to the degradation of tetracycline

被引：0
|
作者：
Gao Y. [1 ]
Jing H. [1 ]
Li L. [1 ]
Wang X. [1 ]
Yang X. [1 ]
机构：
[1] School of Science, North University of China, Taiyuan
来源：
Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica | 2022年 / 39卷 / 02期
关键词：
Bi[!sub]2[!/sub]O[!sub]3[!/sub]/BiOI; Catalytic mechanism; Photocatalysis; Solvothermal method; Tetracycline;
D O I：
10.13801/j.cnki.fhclxb.20210513.001
中图分类号：
学科分类号：
摘要：
As a widely used antibiotic, tetracycline exists in water environment for a long time and is difficult to be degraded naturally, which does great harm to ecological environment and human health. BiOI and Bi2O3/BiOI photocatalysts were prepared by simple room temperature stirring method and solvothermal method. The morphology and structure of the materials were characterized by XRD, SEM, FTIR, UV-Vis, PL and EIS. The effects of different preparation conditions on the degradation of tetracycline by Bi2O3/BiOI composite photocatalytic material under simulated sunlight were investigated. The results show that when the molar ratio of Bi2O3to BiOI is 0.8:1, the reaction pH is 5, the reaction temperature is 180℃, the reaction time is 20 h, the composite photocatalytic material has the best degradation effect on tetracycline, which can reach 75% in 3 h. And the kinetic rate constants are 1.75 times and 1.56 times of that of single BiOI and Bi2O3, respectively. A catalytic mechanism of binary heterojunction photocatalyst is proposed to explain the improved photocatalytic activity. Copyright ©2022 Acta Materiae Compositae Sinica. All rights reserved.
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页码：677 / 684
页数：7
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