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Efficient oxidative dissolution of V2O3 by the in situ electro-generated reactive oxygen species on N-doped carbon felt electrodes
Xue, Yudong1,2; Wang, Yunting1,3; Zheng, Shili1; Sun, Zhi1; Zhang, Yi1; Jin, Wei1
2017-02-01
Source PublicationELECTROCHIMICA ACTA
ISSN0013-4686
Volume226Pages:140-147
Abstract

Oxidative dissolution is a critical step for the efficient remediation of heavy metal oxides in large-scale solid wastes. In the present study, a novel electro-oxidative dissolution process of V2O3 to VO43- is achieved by the in-situ generated reactive oxygen species on the N-doped carbon felt cathode in alkaline media. The electro-catalytic HO2- generation and hydrophilic behavior were significantly enhanced by the introduction of nitrogen-containing functional groups. Besides, the mechanism of electrochemical vanadium conversion is systematically illustrated, and a vanadium self-induced electro-Fenton-like reaction is proposed. By employing the radical quenching and ESR measurements, the contributions for V (III) dissolution is determined to be 43.5% by HO2- and 56.5% by hydroxyl radicals, respectively. It should be noted that the V2O3 solid particles can be efficiently dissolved via adsorption-reaction scheme on the carbon felt electrode. This novel electrochemical strategy provides a promising solution for the heavy metal oxide treatment and further understanding for the in situ reactive oxygen species. (C) 2017 Elsevier Ltd. All rights reserved.

KeywordReactive Oxygen Species Vanadium Dissolution Hydroxyl Radical Alkaline Media Electro-fenton-like
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1016/j.electacta.2017.01.001
Indexed BySCI
Language英语
WOS KeywordElectrochemical Cr(Iii) Oxidation ; Fenton Process ; Reduction Reaction ; Organic Pollutants ; Graphite Felt ; Diffusion Cathode ; Alkaline-solution ; Aqueous-solution ; Nanotube Arrays ; Graphene Oxide
WOS Research AreaElectrochemistry
WOS SubjectElectrochemistry
Funding OrganizationNational Natural Science Foundation of China(51604253 ; CAS Pioneer Hundred Talents Program ; National Basic Research Program of China (973 Program)(2013CB632601 ; 51274179) ; 2013CB632605)
WOS IDWOS:000394081700017
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/22006
Collection湿法冶金清洁生产技术国家工程实验室
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.China Univ Min & Technol Beijing, Sch Chem & Environm Engn, Beijing 100083, Peoples R China
Recommended Citation
GB/T 7714
Xue, Yudong,Wang, Yunting,Zheng, Shili,et al. Efficient oxidative dissolution of V2O3 by the in situ electro-generated reactive oxygen species on N-doped carbon felt electrodes[J]. ELECTROCHIMICA ACTA,2017,226:140-147.
APA Xue, Yudong,Wang, Yunting,Zheng, Shili,Sun, Zhi,Zhang, Yi,&Jin, Wei.(2017).Efficient oxidative dissolution of V2O3 by the in situ electro-generated reactive oxygen species on N-doped carbon felt electrodes.ELECTROCHIMICA ACTA,226,140-147.
MLA Xue, Yudong,et al."Efficient oxidative dissolution of V2O3 by the in situ electro-generated reactive oxygen species on N-doped carbon felt electrodes".ELECTROCHIMICA ACTA 226(2017):140-147.
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