XPS study of the oxidized pyrite surface

The core level spectra of pristine and oxidized mineral pyrite FeS 2 surfaces were studied using synchrotron excited photoelectron spectroscopy. In addition to the bulk feature, three surface core level shifted components were identified in the sulphur 2p spectra. After measuring the spectra of the...

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Bibliographic Details
Published inSurface science Vol. 566; no. 2; pp. 1097 - 1101
Main Authors Mattila, S., Leiro, J.A., Heinonen, M.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 20.09.2004
Subjects
Oxidation
Sulphides
Surface structure, morphology, roughness, and topography
Synchrotron radiation photoelectron spectroscopy
Oxidation
Synchrotron radiation photoelectron spectroscopy
Surface structure, morphology, roughness, and topography
Sulphides
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Summary:The core level spectra of pristine and oxidized mineral pyrite FeS 2 surfaces were studied using synchrotron excited photoelectron spectroscopy. In addition to the bulk feature, three surface core level shifted components were identified in the sulphur 2p spectra. After measuring the spectra of the clean pristine surface, the sample was oxidized for 12 h in O 2 atmosphere. The effect of this treatment of the specimen, besides causing weakening in the signal intensities, was observed as changes in the surface core level shifts (SCLS). The surface components of the oxidized pyrite spectra were shifted towards higher binding energies compared to those of the pristine sample. The reason for this phenomenon is briefly discussed.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0039-6028
1879-2758
DOI:10.1016/j.susc.2004.06.058