Degradation characteristics of humic acid over iron oxides/Fe-0 core-shell nanoparticles with UVA/H2O2

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 环境水质学国家重点实验室

	Degradation characteristics of humic acid over iron oxides/Fe-0 core-shell nanoparticles with UVA/H2O2
	Nie, Yulun; Hu, Chun; Zhou, Lei; Qu, Jiuhui; Wei, Qunshan; Wang, Dongsheng
刊名	JOURNAL OF HAZARDOUS MATERIALS
	2010-01-15
卷号	173 期号:3 页码:474-479
关键词	Humic acid DBP Fenton Iron Electron transfer Galvanic cells
中文摘要	Iron oxides coated on Fe-0 core-shell nanospheres (nIOCl) were synthesized through the reduction of ferrous sulfate aqueous solution by sodium borohydride at ambient atmosphere. The catalyst was highly effective for the degradation of humic acid (HA) in the presence of H2O2 and UVA at neutral pH. Under deoxygenated conditions in the dark, the generation of hydroxyl radicals in aqueous nIOCl dispersion verified its galvanic cell-like performance, which enhanced the interfacial electron transfer and led to its higher reactivity. By the total organic carbon, the absorbance Of UV254, FTIR, the molecular weight distribution and the chemical fractional character analysis, the degradation process of HA was shown to proceed by the disappearance of aromaticity, the increase of hydrophilic fraction and aromatic ring openings into CO2 and small organic acid. The treated HA showed much lower reactivity toward chlorine and the disinfection byproduct (DBP) formation potential was also greatly reduced. Moreover, it was found that the DBP formation potential more depended on the structure of the intermediates of HA degradation than TOC removal. Crown Copyright (C) 2009 Published by Elsevier B.V. All rights reserved.
WOS记录号	WOS:000273135600066
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/21219]
专题	生态环境研究中心_环境水质学国家重点实验室
推荐引用方式 GB/T 7714	Nie, Yulun,Hu, Chun,Zhou, Lei,et al. Degradation characteristics of humic acid over iron oxides/Fe-0 core-shell nanoparticles with UVA/H2O2[J]. JOURNAL OF HAZARDOUS MATERIALS,2010,173(3):474-479.
APA	Nie, Yulun,Hu, Chun,Zhou, Lei,Qu, Jiuhui,Wei, Qunshan,&Wang, Dongsheng.(2010).Degradation characteristics of humic acid over iron oxides/Fe-0 core-shell nanoparticles with UVA/H2O2.JOURNAL OF HAZARDOUS MATERIALS,173(3),474-479.
MLA	Nie, Yulun,et al."Degradation characteristics of humic acid over iron oxides/Fe-0 core-shell nanoparticles with UVA/H2O2".JOURNAL OF HAZARDOUS MATERIALS 173.3(2010):474-479.