Transformation of oxytetracycline on MnO2@polyelectrolyte layers modified anode and toxicity assessment of its electrochemical oxidation intermediates

doi:10.1016/j.jtice.2022.104382

	Transformation of oxytetracycline on MnO2@polyelectrolyte layers modified anode and toxicity assessment of its electrochemical oxidation intermediates
	Chen, Dong1,2 ; Nan, Zhongren 1
	2022-06
发表期刊	Journal of the Taiwan Institute of Chemical Engineers
卷号	135
摘要	Background: Electrochemical advanced oxidation processes (EAOPs) have received considerable attention due to their ability to transform or mineralize emerging organic contaminants. Methods: Herein, we report that MnO2 covered with polyelectrolyte films has been fabricated using layer-by-layer (LBL) assembly to modify the anode for efficient oxytetracycline (OTC) oxidation in water. Significant Findings: It is found that over 89.19% of OTC was degraded in 20 min in this EAOPs system with MnO2@(PSS/PDDA)2PSS modified anode. Quenching experiments and electron-spin resonance (ESR) spectra have shown that hydroxyl radicals (•OH) and direct electron transfer play the dominant roles in OTC oxidation. Several possible pathways of OTC degradation were proposed on the basis of the by-products detected by liquid chromatography-mass spectrometry (LC-MS). Toxicity Estimation Software Tool (T.E.S.T) based on quantitative structure-activity relationships (QSARs) revealed increased toxicity of several transformation products. Moreover, flow cytometry method was applied to quantify the cytotoxic effects of the reaction solution. It may provide an alternative approach to design metal oxide/polymer composites modified anodes for contaminants degradation. It is notable that toxicological assessment of the transformation products is essential especially for newly developed anode materials. © 2022 Taiwan Institute of Chemical Engineers
关键词	Free radical reactions Mass spectrometry Reaction kinetics Electrochemical oxidation Paramagnetic resonance Magnetic moments Metals Reaction intermediates Anodes Electron spin resonance spectroscopy Polyelectrolytes Manganese oxide Liquid chromatography Electrochemical advanced oxidation process Emerging organic contaminants Intermediate MnO2@ polyelectrolyte Oxytetracycline Polyelectrolyte layers Software-tools Toxicity assessment Toxicity estimation software tool calculation Transformation products
DOI	10.1016/j.jtice.2022.104382
收录类别	EI ; SCIE
ISSN	1876-1070
语种	英语
WOS研究方向	Engineering
WOS类目	Engineering, Chemical
WOS记录号	WOS:000817186500004
出版者	Taiwan Institute of Chemical Engineers
EI入藏号	20222112157005
EI主题词	Toxicity
EI分类号	461.7 Health Care ; 701.2 Magnetism: Basic Concepts and Phenomena ; 714.1 Electron Tubes ; 801 Chemistry ; 801.4.1 Electrochemistry ; 802.2 Chemical Reactions ; 804 Chemical Products Generally ; 815.1.1 Organic Polymers ; 817.1 Polymer Products
原始文献类型	Journal article (JA)
EISSN	1876-1089
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.lzufe.edu.cn/handle/39EH0E1M/33205
专题	农林经济管理学院
作者单位	1.Gansu Key Laboratory for Environmental Pollution Prediction and Control, College of Earth and Environmental Sciences, Lanzhou University, Gansu, Lanzhou; 730000, China; 2.School of Agriculture and Forestry Economics and Management, Lanzhou University of Finance and Economics, Lanzhou; 730020, China
第一作者单位	兰州财经大学
推荐引用方式 GB/T 7714	Chen, Dong,Nan, Zhongren. Transformation of oxytetracycline on MnO2@polyelectrolyte layers modified anode and toxicity assessment of its electrochemical oxidation intermediates[J]. Journal of the Taiwan Institute of Chemical Engineers,2022,135.
APA	Chen, Dong,&Nan, Zhongren.(2022).Transformation of oxytetracycline on MnO2@polyelectrolyte layers modified anode and toxicity assessment of its electrochemical oxidation intermediates.Journal of the Taiwan Institute of Chemical Engineers,135.
MLA	Chen, Dong,et al."Transformation of oxytetracycline on MnO2@polyelectrolyte layers modified anode and toxicity assessment of its electrochemical oxidation intermediates".Journal of the Taiwan Institute of Chemical Engineers 135(2022).