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Efficient degradation of antibiotics in different water matrices through the photocatalysis of inverse opal K-g-C3N4: Insights into mechanism and assessment of antibacterial activity

Title
Efficient degradation of antibiotics in different water matrices through the photocatalysis of inverse opal K-g-C3N4: Insights into mechanism and assessment of antibacterial activity
Authors
Lei, JuyingChen, BinZhou, LiangDing, NingkaiCai, ZhengqingWang, LingzhiIn, Su-IlCui, ChangzhengZhou, YanboLiu, YongdiZhang, Jinlong
DGIST Authors
In, Su-Il
Issue Date
2020-11
Citation
Chemical Engineering Journal, 400, 125902
Type
Article
Article Type
Article
Author Keywords
Graphitic carbon nitrideInverse opalDopingAntibiotic degradationAntimicrobial activity
Keywords
Z-SCHEME PHOTOCATALYSTELECTRO-FENTON PROCESSWASTE-WATERSURFACE-WATERHIGH-PERFORMANCERISK-ASSESSMENTH-2 EVOLUTIONLEVOFLOXACING-C3N4FLUOROQUINOLONES
ISSN
1385-8947
Abstract
The efficient degradation of fluoroquinolone antibiotics and the reduction of their antimicrobial activity were achieved in different water matrices through the photocatalysis of inverse opal potassium-doped carbon nitride (IO K-CN). The IO K-CN photocatalyst with optimum doping ratio of potassium performed much better than bulk carbon nitride and pure inverse opal carbon nitride for removing fluoroquinolone antibiotics, such as levofloxacin (LVX) and norfloxacin (NOR). The remarkably narrowed band gap resulting from potassium doping and the unique properties of the inverse opal construction jointly contributed to enhancing the activity of the photocatalyst. A possible mechanism and degradation pathway for LVX was proposed on the basis of a series of characterizations including electron spin resonance (ESR) experiments, and liquid chromatography-mass spectrometry (LC-MS) analysis. Meanwhile, the byproducts during the LVX photocatalytic degradation were shown to have much lower sterilization effect, implying that the toxicity and the potential risk of LVX were excellently reduced. The potential application for the treatment of antibiotic-containing wastewater was indicated by the excellent treatment efficiency and favorable durability of this photocatalyst. © 2020 Elsevier B.V.
URI
http://hdl.handle.net/20.500.11750/12851
DOI
10.1016/j.cej.2020.125902
Publisher
Elsevier BV
Related Researcher
  • Author In, Su-Il Green and Renewable Energy for Endless Nature(GREEN) Lab
  • Research Interests CO2 conversion to hydrocarbon fuels; Water splitting for hydrogen generation; Quantum dot devices; Dye sensitized solar cells; Environmental remediation; Synthesis of functional nanomaterials; CO2 연료전환; 수소생산을 위한 광전기화학적 물분해; 양자점 태양전지; 염료감응 태양전지; 공해물질 저감연구; 기능성 나노소재 개발
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Collection:
Department of Energy Science and EngineeringGreen and Renewable Energy for Endless Nature(GREEN) Lab1. Journal Articles


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