光催化
氟苯尼考
化学
臭氧
降级(电信)
光化学
化学工程
可见光谱
分子
光降解
材料科学
催化作用
有机化学
光电子学
电信
生物化学
计算机科学
工程类
抗生素
作者
Lu Tan,Zhenxi Yuan,Weirui Chen,Zhen Lin,Yiming Tang,Laisheng Li,Jing Wang
标识
DOI:10.1016/j.jcis.2023.12.086
摘要
In this work, a series of BiOClxBr1-x (BCB) solid solutions are facilely designed for visible-light-driven photocatalytic ozonation (PCO) degradation of florfenicol (FF) in water environments, which could add to the library of efficient, cost-effective and robust nanocatalysts for water purification. BCB solid solutions in the structure of 2D nanosheets are achieved involving the etching of BiOBr “micro-flowers” with HCl at different concentrations, allowing a removal ratio of FF up to 97.3 % within 1 h, superior to bare BiOBr and bare BiOCl. A strengthened synergistic effect between photocatalysis and ozonation is substantiated, where the separation of photo-induced charge transfer is accelerated, the band gap is tuned and the utilization efficiency of ozone is enhanced. This facilitates the production of reactive oxygen species identified as •OH, •O2–, and 1O2 that will attack the FF molecule for degradation based on three pathways.
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