Enhanced peroxymonosulfate activation by Cu-doped LaFeO3 with rich oxygen vacancies: Compound-specific mechanisms

doi:10.1016/j.cej.2022.134882

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	Enhanced peroxymonosulfate activation by Cu-doped LaFeO3 with rich oxygen vacancies: Compound-specific mechanisms
	Rao, Yongfang 4; Zhang, Yuanyuan 4; Fan, Jiahui 4; Wei, Gaoling 3; Wang, Dan 4; Han, Fuman 4; Huang, Yu 2; Croue, Jean-Philippe 1
刊名	CHEMICAL ENGINEERING JOURNAL
	2022-05-01
卷号	435 页码:14
关键词	Sulfadiazine Peroxymonosulfate Singlet oxygen Compound specific mechanism Cu-doped LaFeO3
ISSN号	1385-8947
DOI	10.1016/j.cej.2022.134882
通讯作者	Rao, Yongfang(yfrao@xjtu.edu.cn) ; Huang, Yu(huangyu@ieecas.cn)
英文摘要	The degradation reaction mechanisms of organic pollutants by peroxymonosulfate (PMS) activation processes remain controversial. In this study, Cu-doped LaFeO3 samples were prepared and used as heterogeneous catalysts of PMS for the degradation of pharmaceuticals. Compared to LaFeO3 (LFO), the increased catalytic activity of LaFe1-xCuxO3 (LFCO) samples was observed, among which LFCO-7.5 exhibited the best performance. The enhanced catalytic activity of LFCO-7.5 was attributable to the generation of abundant oxygen vacancies. Hydroxyl radicals, sulfate radicals, superoxide and singlet oxygen were detected in the LFCO-7.5/PMS system. However, selective effects of radical scavengers on the degradation of different pharmaceuticals and selective reactivity of singlet oxygen toward different pharmaceuticals indicate the existence of compound-specific degradation mechanisms in the LFCO-7.5/PMS system. Furthermore, possible degradation pathways of SDZ and the toxicity evolution were investigated during sulfadiazine (SDZ) degradation. This study further enhances our knowledge on the degradation reaction mechanisms of organic pollutants in PMS activation processes.
资助项目	National Natural Science Foundation of China[41877480]
WOS关键词	SULFONAMIDE ANTIBIOTICS ; EFFICIENT DEGRADATION ; PHOTOCHEMICAL FATE ; ADVANCED OXIDATION ; HYDROXYL RADICALS ; SINGLET OXYGEN ; WATER ; DICLOFENAC ; PEROVSKITE ; CARBAMAZEPINE
WOS研究方向	Engineering
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000773585700004
资助机构	National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/17616]
专题	地球环境研究所_粉尘与环境研究室
通讯作者	Rao, Yongfang; Huang, Yu
作者单位	1.Univ Poitiers, Inst Chim Milieux & Mat, IC2MP UMR 7285 CNRS, Poitiers, France 2.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol SKLLQG, Xian 710075, Peoples R China 3.Guangdong Acad Sci, Natl Reg Joint Engn Res Ctr Soil Pollut Control &, Inst Ecoenvironm & Soil Sci, Guangdong Key Lab Integrated Agroenvironm Pollut, Guangzhou 510650, Peoples R China 4.Xi An Jiao Tong Univ, Dept Environm Sci & Engn, Xian 710049, Peoples R China
推荐引用方式 GB/T 7714	Rao, Yongfang,Zhang, Yuanyuan,Fan, Jiahui,et al. Enhanced peroxymonosulfate activation by Cu-doped LaFeO3 with rich oxygen vacancies: Compound-specific mechanisms[J]. CHEMICAL ENGINEERING JOURNAL,2022,435:14.
APA	Rao, Yongfang.,Zhang, Yuanyuan.,Fan, Jiahui.,Wei, Gaoling.,Wang, Dan.,...&Croue, Jean-Philippe.(2022).Enhanced peroxymonosulfate activation by Cu-doped LaFeO3 with rich oxygen vacancies: Compound-specific mechanisms.CHEMICAL ENGINEERING JOURNAL,435,14.
MLA	Rao, Yongfang,et al."Enhanced peroxymonosulfate activation by Cu-doped LaFeO3 with rich oxygen vacancies: Compound-specific mechanisms".CHEMICAL ENGINEERING JOURNAL 435(2022):14.