Journal
CHEMOSPHERE
Volume 287, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.chemosphere.2021.132246
Keywords
Glucose; BiOBr; Hydroxyl; Photocatalyst; Antibacterial activity
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Funding
- National Natural Science Foundation of China [22076039, 21677047, 51808199]
- Postdoctoral Science Foundation, China [2018M630825, 2019T120624]
- Fund for Excellent Young Scholars [20180545]
- Henan Normal University, China
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This study found that modifying BiOBr photocatalyst with a surface hydroxyl strategy can significantly enhance the photocatalytic degradation of levofloxacin hydrochloride, leading to efficient removal of antibiotics and elimination of their biotoxicity.
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.
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