CAS OpenIR
HO center dot selective cleavage Fe-S bond for FeS2 electrolysis in alkaline solution
Zhang, Tong1,2; Wang, Yingqian1; Hu, Yingnan1,2; Wang, Zhi1; Chen, Jianhua3; Niu, Xiaopeng1,2; Li, Yuqiong3; Gong, Xuzhong1,2
2019-05-20
Source PublicationELECTROCHIMICA ACTA
ISSN0013-4686
Volume306Pages:327-338
AbstractElectrochemical oxidation of pyrite is a critical process in the operation of the semiconductor solar cell and mineral electrolytic desulfurization. However, the mechanism of pyrite electrochemical oxidation is still controversial. In this work, electron spin resonance (ESR) and electrochemical characterizations indicated the presence of hydroxyl radical (HO center dot) and the increase in HO center dot concentration with time, verifying the importance of HO center dot on pyrite electrolysis. Fe(III) were increased on the surface of pyrite after electrolysis, demonstrating the HO center dot promoted oxidation of Fe(II) to form more Fe(III). The increased concentration in S2O32- in the solution indicated that the FeeS bond was more labile than the SeS bond during electrolysis process. DFT results further showed that the oxidation degree of Fe(II) determined the pathway of pyrite electrolysis. The pre-oxidation of Fe(II) to Fe(III) was prerequisite for the completed oxidation of S atom, resulting the selective breakage of FeeS bond. The results above revealed that the synergistic effects between HO center dot and pH of solution for FeS2 electrolysis. (c) 2019 Elsevier Ltd. All rights reserved.
KeywordHO center dot FeS2 Completed oxidation Fe-S bond Selective cleavage
DOI10.1016/j.electacta.2019.03.114
Language英语
WOS KeywordDOPED DIAMOND ANODE ; PYRITE OXIDATION ; ELECTROCHEMICAL OXIDATION ; HYDROXYL RADICALS ; DISSOLVED-OXYGEN ; IRON PYRITE ; SURFACE ; WATER ; SULFUR ; DESULFURIZATION
Funding ProjectNatural Science Foundation of China[51474198] ; Natural Science Foundation of China[51422405] ; Natural Science Foundation of China[51764002] ; Natural Science Foundation of China[51574092]
WOS Research AreaElectrochemistry
WOS SubjectElectrochemistry
Funding OrganizationNatural Science Foundation of China
WOS IDWOS:000464148700035
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/28194
Collection中国科学院过程工程研究所
Corresponding AuthorWang, Zhi; Chen, Jianhua; Gong, Xuzhong
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, CAS Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China
3.Guangxi Univ, Guangxi Key Lab Proc Nonferrous Met & Featured Ma, Sch Resources Environm & Mat, Nanning 530004, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Tong,Wang, Yingqian,Hu, Yingnan,et al. HO center dot selective cleavage Fe-S bond for FeS2 electrolysis in alkaline solution[J]. ELECTROCHIMICA ACTA,2019,306:327-338.
APA Zhang, Tong.,Wang, Yingqian.,Hu, Yingnan.,Wang, Zhi.,Chen, Jianhua.,...&Gong, Xuzhong.(2019).HO center dot selective cleavage Fe-S bond for FeS2 electrolysis in alkaline solution.ELECTROCHIMICA ACTA,306,327-338.
MLA Zhang, Tong,et al."HO center dot selective cleavage Fe-S bond for FeS2 electrolysis in alkaline solution".ELECTROCHIMICA ACTA 306(2019):327-338.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Zhang, Tong]'s Articles
[Wang, Yingqian]'s Articles
[Hu, Yingnan]'s Articles
Baidu academic
Similar articles in Baidu academic
[Zhang, Tong]'s Articles
[Wang, Yingqian]'s Articles
[Hu, Yingnan]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Zhang, Tong]'s Articles
[Wang, Yingqian]'s Articles
[Hu, Yingnan]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.