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Hydroxyl regulating effect on surface structure of BiOBr photocatalyst toward high-efficiency degradation performance
Chemosphere ( IF 8.8 ) Pub Date : 2021-09-14 , DOI: 10.1016/j.chemosphere.2021.132246
Cuiwei Du 1 , Shiyu Nie 1 , Weiwei Feng 1 , Jiale Zhang 1 , Mingshuo Qi 1 , Yutong Liang 1 , Yuhan Wu 1 , Jinglan Feng 1 , Shuying Dong 1 , Haijin Liu 1 , Jianhui Sun 1
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Herein, photocatalytic degradation of levofloxacin hydrochloride (LVF) by a simple surface hydroxyl strategy on BiOBr photocatalyst was studied under simulated visible light irradiation. Interestingly, the BiOBr contained abundant hydroxyl groups following its modification with glucose, which enhanced the photocatalytic degradation of levofloxacin hydrochloride (LVF). The degradation efficiency of LVF over the optimized composite of BiOBr-5 could reach 91.67% in 20 min, which was much higher than that of pristine BiOBr (59.26%). Following, the biotoxicity of antibiotics to Escherichia coli DH5a could be eliminated after LVF photocatalytic degradation. This strategy proposed in this work can provide new ideas for tuning the surface structures of photocatalysts via specific functional groups for the highly efficient degradation and efficient removal of antibiotics in wastewater.



中文翻译:

羟基调节BiOBr光催化剂表面结构的高效降解性能

在此,研究了在模拟可见光照射下,通过简单的表面羟基策略在 BiOBr 光催化剂上光催化降解盐酸左氧氟沙星 (LVF)。有趣的是,BiOBr 在用葡萄糖修饰后含有丰富的羟基,这增强了盐酸左氧氟沙星 (LVF) 的光催化降解。LVF 对优化后的 BiOBr-5 复合材料的降解效率在 20 分钟内可达到 91.67%,远高于原始 BiOBr(59.26%)。以下,抗生素对大肠杆菌DH5a的生物毒性LVF 光催化降解后可消除。这项工作中提出的策略可以为通过特定的官能团调整光催化剂的表面结构提供新的思路,以高效降解和有效去除废水中的抗生素。

更新日期:2021-09-17
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