Oxidative degradation of sulfamethoxazole antibiotic catalyzed by porous magnetic manganese ferrite nanoparticles: mechanism and by-products identification

doi:10.1007/s10853-020-05000-y

	Oxidative degradation of sulfamethoxazole antibiotic catalyzed by porous magnetic manganese ferrite nanoparticles: mechanism and by-products identification
	Li, Yulian 2,3; He, Junyong 3; Zhang, Kaisheng 3; Hong, Peidong 2,3; Wang, Chengming 1; Kong, Lingtao 3; Liu, Jinhuai 3
刊名	JOURNAL OF MATERIALS SCIENCE
	2020-10-01
卷号	55
ISSN号	0022-2461
DOI	10.1007/s10853-020-05000-y
通讯作者	Kong, Lingtao(ltkong@iim.ac.cn)
英文摘要	Magnetic porous manganese ferrite nanoparticles (MnxFe3-xO4) with diverse ingredient Mn/Fe mole ratios were synthesized to degrade sulfamethoxazole (SMX) antibiotic residues involving peroxymonosulfate (PMS) dissociation to produce free radical SO4 center dot-,(OH)-O-center dot and singlet oxygen(1)O(2)in the absence of heat and light. With the increase in proportion of manganese, the degradation efficiency of SMX increased from 19 to 70% in 30 min. The removal efficiency of SMX increased following the concentration increase of PMS (from 1 similar to 10 mM). After 60 min, the total organic carbon went down by 20%, and the concentration of NH(4)(+)and NO(3)(-)accumulated obviously simultaneously. EPR study and chemical probe method, depending on scavenging revealed that SO4 center dot-,(OH)-O-center dot and(1)O(2)were generated and contributed to the degradation system. Based on the capture of eleven decomposition by-products by LC/MS, two different degradation pathways of SMX were determined, mainly consisting of cleavage of the S-N bond, hydroxylation of benzene and heterocyclic ring, oxidation of amino group and ring-opening cleavage processes. The nanoparticle reuse tests showed that the porous magnetic manganese ferrite nanoparticles could still maintain a high degradation efficiency after five oxidative degradation reactions. The magnetic porous manganese ferrite nanocrystals could activate the PMS to oxidize SMX antibiotic residue without additional energy. [GRAPHICS] .
资助项目	State Key Research Development Program of China[2019YFC0408500] ; Natural Science Foundation of China[2196182] ; Natural Science Foundation of China[61873253] ; Science and Technology Major Projects of Anhui Province[18030801104] ; China Postdoctoral Science Foundation[2019M652227]
WOS关键词	PHOTOCATALYTIC DEGRADATION ; ACTIVATED PERSULFATE ; PEROXYMONOSULFATE ACTIVATION ; HETEROGENEOUS CATALYST ; EFFICIENT DEGRADATION ; ORGANIC CONTAMINANTS ; PHOTO-FENTON ; PERFORMANCE ; WATER ; IRON
WOS研究方向	Materials Science
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000545905400005
资助机构	State Key Research Development Program of China ; Natural Science Foundation of China ; Science and Technology Major Projects of Anhui Province ; China Postdoctoral Science Foundation
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/71057]
专题	中国科学院合肥物质科学研究院
通讯作者	Kong, Lingtao
作者单位	1.Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Anhui, Peoples R China 2.Univ Sci & Technol China, Dept Chem, Hefei 230026, Anhui, Peoples R China 3.Chinese Acad Sci, Inst Intelligent Machines, Nanomat & Environm Detect Lab, Hefei 230031, Peoples R China
推荐引用方式 GB/T 7714	Li, Yulian,He, Junyong,Zhang, Kaisheng,et al. Oxidative degradation of sulfamethoxazole antibiotic catalyzed by porous magnetic manganese ferrite nanoparticles: mechanism and by-products identification[J]. JOURNAL OF MATERIALS SCIENCE,2020,55.
APA	Li, Yulian.,He, Junyong.,Zhang, Kaisheng.,Hong, Peidong.,Wang, Chengming.,...&Liu, Jinhuai.(2020).Oxidative degradation of sulfamethoxazole antibiotic catalyzed by porous magnetic manganese ferrite nanoparticles: mechanism and by-products identification.JOURNAL OF MATERIALS SCIENCE,55.
MLA	Li, Yulian,et al."Oxidative degradation of sulfamethoxazole antibiotic catalyzed by porous magnetic manganese ferrite nanoparticles: mechanism and by-products identification".JOURNAL OF MATERIALS SCIENCE 55(2020).