应用化学 ›› 2021, Vol. 38 ›› Issue (7): 754-766.DOI: 10.19894/j.issn.1000-0518.200318

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BiOX(X=Cl,Br,I)复合光催化材料降解水体中抗生素研究进展

贺全宝, 胡征, 葛明*   

  1. 华北理工大学化学工程学院,唐山 063210
  • 收稿日期:2020-10-26 接受日期:2021-02-05 出版日期:2021-07-01 发布日期:2021-09-01
  • 通讯作者: *E-mail:geminggena@163.com
  • 基金资助:
    河北省自然科学基金 (No.B2019209373)资助

Research Progress on Photo-degradation of Antibiotics in Water by BiOX(X=Cl,Br,I) Composite Photocatalytic Materials

HE Quan-Bao, HU Zheng, GE Ming*   

  1. School of Chemical Engineering, North China University of Science and Technology, Tangshan 063210, China
  • Received:2020-10-26 Accepted:2021-02-05 Published:2021-07-01 Online:2021-09-01
  • About author:Natural Science Foundation of Hebei Province(No.B2019209373)

摘要: 抗生素大量使用致使其在水环境中普遍存在,对生态环境和人类健康造成一定威胁。 卤氧化铋BiOX(X=Cl,Br,I)具有独特二维层状结构、适宜的禁带宽度等优点而被用作光催化剂来降解水中残留的抗生素。 但单一BiOX(X=Cl,Br,I) 存在可见光吸收能力偏弱、稳定性不佳等问题,往往需要对其进行复合改性(如金属负载、碳材料修饰及构建异质结)来提升去除水中抗生素的性能。 本文主要介绍了用于水体中抗生素类污染物降解的BiOX(X=Cl,Br,I)复合光催化材料的设计合成、活性增强机制以及光催化反应机理。相比于金属负载及碳材料修饰,构建半导体异质结是常用且经济有效地增强BiOX(X=Cl,Br,I)光催化降解水中抗生素性能的方法。 指出该领域以后的研究需要评估BiOX(X=Cl,Br,I)复合光催化材料降解水环境中不同类型抗生素的效果,同时还需揭示自然水体的背景成分(如溶解性有机质、无机离子等)对该类复合光催化剂去除水中抗生素活性和稳定性的影响。 最后提出引入过氧化物来提升BiOX复合光催化体系矿化水中抗生素的效果以及构建磁性BiOX光催化材料来解决降解反应后的固-液分离问题。

关键词: 卤氧化铋, 催化剂, 抗生素, 降解, 反应机制

Abstract: The large-scale use of antibiotics makes them ubiquitous in the water environment, which poses a certain threat to the ecological environment and human health. Bismuth oxychloride (BiOX (X=Cl, Br, I)) can be used as a photocatalyst to degrade residual antibiotics in water due to its unique two-dimensional layered structure and suitable bandgap. However, BiOX (X=Cl, Br, I) has problems including weak visible light absorption capacity and poor stability, which often requires composite modification (such as metal loading, carbon material modification, and construction of heterojunctions) to improve their performance for removing antibiotics in water. This paper mainly introduces the design, synthesis, mechanism of activity enhancement and photocatalytic reaction mechanisms of BiOX (X=Cl, Br, I) composite photocatalysts for the degradation of antibiotics in water. Compared with metal loading and carbon material modification, the construction of semiconductor heterojunction is a common and cost-effective method to enhance the performance of BiOX (X=Cl, Br, I) photocatalytic degradation of antibiotics in water. It is pointed out that the future research in this field need to evaluate the performance of BiOX (X=Cl, Br, I) composite photocatalytic materials by degrading the different types of antibiotics in water, and it is also necessary to reveal the effect of the background components of natural water bodies (such as dissolved organic matter, inorganic ions, etc.) on the removal of antibiotics using BiOX (X=Cl, Br, I) composite photocatalysts. Finally, it is proposed to introduce peroxide to enhance the effect of BiOX composite photocatalytic system to mineralize antibiotics in water and constructing the magnetic BiOX photocatalytic materials could solve the problem of solid-liquid separation after degradation reaction.

Key words: Bismuth oxychloride, Catalyst, Antibiotics, Degradation, Reaction mechanism

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