The Fe-N-C oxidase-like nanozyme used for catalytic oxidation of NOM in surface water

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 中国科学院饮用水科学与技术重点实验室

	The Fe-N-C oxidase-like nanozyme used for catalytic oxidation of NOM in surface water
	Yang, Hankun; Wu, Xue; Su, Lei; Ma, Yiming; Graham, Nigel J. D.; Yu, Wenzheng
刊名	WATER RESEARCH
	2020-03-15
卷号	171 页码:1-10
关键词	Fe-N-C oxidase-like nanozyme Humic acid Aeration Catalytic oxidation Surface water
ISSN号	0043-1354
英文摘要	The removal of natural organic matter (NOM), particularly humic substances (HS) from surface waters during drinking water treatment is necessary to avoid various water quality problems in supply, such as the formation of disinfection by-products. As an alternative to conventional processes (e.g. coagulation), and in the light of the rapidly increasing applications of nanozyme in bio-catalysis, a novel Fe-N-C oxidase-like nanozyme (FeNZ) has been prepared and used to catalyze the oxidative degradation of NOM during simple aeration. Using humic acid (HA) as a model NOM it was found that the HA removal (as TOC) was increased by a factor of 6 with a low dose (10 mg/L) of FeNZ compared to an aerated solution without FeNZ. A variety of analytical methods was used to investigate the oxygen reduction reaction, including cyclic voltammetry, electron spin resonance, and density functional theory (DFT) simulation. Based on these studies, a catalytic oxidation mechanism described as adsorption-activation-oxidation was proposed. The enhanced NOM removal performance of FeNZ catalytic oxidation was confirmed with samples of natural surface water in terms of organic mineralization and conversion of hydrophobic to hydrophilic components. The results show great potential for the use of oxidase-like nano catalytic materials in the field of water treatment. (C) 2020 Elsevier Ltd. All rights reserved.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/45368]
专题	生态环境研究中心_中国科学院饮用水科学与技术重点实验室
推荐引用方式 GB/T 7714	Yang, Hankun,Wu, Xue,Su, Lei,et al. The Fe-N-C oxidase-like nanozyme used for catalytic oxidation of NOM in surface water[J]. WATER RESEARCH,2020,171:1-10.
APA	Yang, Hankun,Wu, Xue,Su, Lei,Ma, Yiming,Graham, Nigel J. D.,&Yu, Wenzheng.(2020).The Fe-N-C oxidase-like nanozyme used for catalytic oxidation of NOM in surface water.WATER RESEARCH,171,1-10.
MLA	Yang, Hankun,et al."The Fe-N-C oxidase-like nanozyme used for catalytic oxidation of NOM in surface water".WATER RESEARCH 171(2020):1-10.