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Identify fine microstructure of multifarious iron oxides via O K-edge EELS spectra
Chen, Junnan1,2; Li, Yujie1,2; Lu, Ming1,3; Niu, Yiming1,2; Zhang, Bingsen1,2
Corresponding AuthorZhang, Bingsen(bszhang@imr.ac.cn)
2022-09-01
Source PublicationCHINESE CHEMICAL LETTERS
ISSN1001-8417
Volume33Issue:9Pages:4375-4379
AbstractRelying on the electron energy loss spectrum (EELS) of metallic elements to obtain microstructure analysis is an investigation method of the reaction mechanisms of transition metal oxides (TMOs) in catalysis, energy storage and conversion. However, the low signal from K shell owing to insufficient electron beam energy, and the complicated electronic structure in L shell of the metal element restrict the analysis of the coordination environment of the TMOs. Herein, density functional theory (DFT) calculation, Fourier transform (FT) and wavelet transform (WT) were employed to probe the relationship between the four individual peaks in O K-edge spectra of iron oxides and the microstructure information (chemical bonds and atomic coordination). The findings show that the peak amplitude ration is in a linear correlation with the valence state of Fe element, and that the coordination number obtained by radial distribution function (RDF) is favorably linearly correlative with that from the standard coordination structure model. As a result, the quantitative analysis on the change of valence state and atomic coordination in microstructure can be realized by EELS O K-edge spectra. This study establishes EELS O K-edge spectrum as a promising pathway to quantitatively analyze the valence state and atomic coordination information of TMOs, and offers an effective method to conduct microstructure analysis via the EELS spectra of the non-metal element. (C) 2022 Published by Elsevier B.V. on behalf of Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences.
KeywordEELS ELNES EXELFS Transition metal oxides DFT Wavelet analyze
Funding OrganizationNational Natural Science Foundation of China ; Liao Ning Revitalization Talents Program ; Research Fund of SYNL
DOI10.1016/j.cclet.2021.12.027
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[22072164] ; National Natural Science Foundation of China[51932005] ; National Natural Science Foundation of China[21773269] ; National Natural Science Foundation of China[52161145403] ; Liao Ning Revitalization Talents Program[XLYC1807175] ; Research Fund of SYNL
WOS Research AreaChemistry
WOS SubjectChemistry, Multidisciplinary
WOS IDWOS:000815137000045
PublisherELSEVIER SCIENCE INC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/174987
Collection中国科学院金属研究所
Corresponding AuthorZhang, Bingsen
Affiliation1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
3.Jilin Normal Univ, Minist Educ, Key Lab Funct Mat Phys & Chem, Changchun 130103, Peoples R China
Recommended Citation
GB/T 7714
Chen, Junnan,Li, Yujie,Lu, Ming,et al. Identify fine microstructure of multifarious iron oxides via O K-edge EELS spectra[J]. CHINESE CHEMICAL LETTERS,2022,33(9):4375-4379.
APA Chen, Junnan,Li, Yujie,Lu, Ming,Niu, Yiming,&Zhang, Bingsen.(2022).Identify fine microstructure of multifarious iron oxides via O K-edge EELS spectra.CHINESE CHEMICAL LETTERS,33(9),4375-4379.
MLA Chen, Junnan,et al."Identify fine microstructure of multifarious iron oxides via O K-edge EELS spectra".CHINESE CHEMICAL LETTERS 33.9(2022):4375-4379.
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