气候变化领域集成服务门户(CCPortal): Mechanistic insights for efficient inactivation of antibiotic resistance genes: a synergistic interfacial adsorption and photocatalytic-oxidation process

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DOI	10.1016/j.scib.2020.07.015
	Mechanistic insights for efficient inactivation of antibiotic resistance genes: a synergistic interfacial adsorption and photocatalytic-oxidation process
	Zhou Z.; Shen Z.; Cheng Z.; Zhang G.; Li M.; Li Y.; Zhan S.; Crittenden J.C.
发表日期	2020
ISSN	20959273
起始页码	2107
结束页码	2119
卷号	65 期号:24
英文摘要	Advanced oxidation processes (AOPs) have been applied to address multiple environmental concerns including antibiotic resistance genes (ARGs). ARGs have shown an increasing threat to human health, and they are either harbored by antibiotic-resistant bacteria (ARB) or free in the environment. However, the control of ARGs has been substantially limited by their low concentration and the limited knowledge about their interfacial behavior. Herein, a novel AOP catalyst, Ag/TiO2/graphene oxide (GO), combined with a polyvinylidene fluoride (PVDF) ultrafiltration membrane was designed with a synergistic interfacial adsorption and oxidation function to inactivate ARGs with high efficiency in both model solutions and in secondary wastewater effluent, especially when the residue concentration was low. Further analysis showed that the mineralization of bases and phosphodiesters mainly caused the inactivation of ARGs. Moreover, the interfacial adsorption and oxidation processes of ARGs were studied at the molecular level. The results showed that GO was rich in sp2 backbones and functional oxygen groups, which efficiently captured and enriched the ARGs via π-π interactions and hydrogen bonds. Therefore, the photogenerated active oxygen species attack the ARGs by partially overcoming the kinetic problems in this process. The Ag/TiO2/GO catalyst was further combined with a PVDF membrane to test its potential in wastewater treatment applications. This work offers an efficient method and a corresponding material for the inactivation and mineralization of intra/extracellular ARGs. Moreover, the molecular-level understanding of ARG behaviors on a solid–liquid interface will inspire further control strategies of ARGs in the future. © 2020 Science China Press
关键词	Antibiotic resistance genes (ARGs)Interfacial behaviors Synergistic adsorption and photocatalytic oxidation Trace contaminants
英文关键词	Adsorption; Antibiotics; Catalysts; Effluents; Fluorine compounds; Genes; Health risks; Hydrogen bonds; Ionization of gases; Mineralogy; Oxygen; Phase interfaces; Wastewater treatment; Water filtration; Advanced oxidation process; Antibiotic resistance genes; Antibiotic-resistant bacteria; Environmental concerns; Interfacial adsorption; Photocatalytic oxidations; Polyvinylidene fluorides; Ultra-filtration membranes; Oxidation
语种	英语
来源期刊	Science Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/207336
作者单位	MOE Key Laboratory of Pollution Processes and Environmental Criteria, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China; School of Materials Science and Engineering, Nankai University, Tianjin, 300350, China; Department of Microbiology, College of Life Sciences, Nankai University, Tianjin, 300071, China; School of Civil and Environmental Engineering, Harbin Institute of Technology, Shenzhen (HITSZ), Shenzhen, 518055, China; Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, School of Science, Tianjin University, Collaborative Innovation Center of Chemical Science and Engineering, Tianjin, 300072, China; Tianjin Key Laboratory for Rare Earth Materials and Applications, Tianjin, 300072, China; School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA 30332, United States
推荐引用方式 GB/T 7714	Zhou Z.,Shen Z.,Cheng Z.,et al. Mechanistic insights for efficient inactivation of antibiotic resistance genes: a synergistic interfacial adsorption and photocatalytic-oxidation process[J],2020,65(24).
APA	Zhou Z..,Shen Z..,Cheng Z..,Zhang G..,Li M..,...&Crittenden J.C..(2020).Mechanistic insights for efficient inactivation of antibiotic resistance genes: a synergistic interfacial adsorption and photocatalytic-oxidation process.Science Bulletin,65(24).
MLA	Zhou Z.,et al."Mechanistic insights for efficient inactivation of antibiotic resistance genes: a synergistic interfacial adsorption and photocatalytic-oxidation process".Science Bulletin 65.24(2020).