Analysis of XPS spectra of Fe2+ and Fe3+ ions in oxide materials

Yamashita, Toru and Hayes, Peter (2008) Analysis of XPS spectra of Fe2+ and Fe3+ ions in oxide materials. Applied Surface Science, 254 8: 2441-2449. doi:10.1016/j.apsusc.2007.09.063


Author Yamashita, Toru
Hayes, Peter
Title Analysis of XPS spectra of Fe2+ and Fe3+ ions in oxide materials
Formatted title Analysis of XPS spectra of Fe2+ and Fe3+ ions in oxide materials
Journal name Applied Surface Science   Check publisher's open access policy
ISSN 0169-4332
Publication date 2008-02-15
Year available 2007
Sub-type Article (original research)
DOI 10.1016/j.apsusc.2007.09.063
Volume 254
Issue 8
Start page 2441
End page 2449
Total pages 9
Place of publication Amsterdam
Publisher Elsevier
Language eng
Subject 091407 Pyrometallurgy
Abstract Samples of the iron oxides Fe0.94O, Fe3O4, Fe2O3, and Fe2SiO4 were prepared by high temperature equilibration in controlled gas atmospheres. The samples were fractured in vacuum and high resolution XPS spectra of the fractured surfaces were measured. The peak positions and peak shape parameters of Fe 3p for Fe2+ and Fe3+ were derived from the Fe 3p XPS spectra of the standard samples of 2FeO·SiO2 and Fe2O3, respectively. Using these parameters, the Fe 3p peaks of Fe3O4 and Fe1−yO are analysed. The results indicate that high resolution XPS techniques can be used to determine the Fe2+/Fe3+ ratios in metal oxides. The technique has the potential for application to other transition metal oxide systems.
Keyword XPS
Iron oxide
Quantitative analysis
Chemical state
Q-Index Code C1
Q-Index Status Provisional Code

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
School of Mechanical & Mining Engineering Publications
 
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