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Ce 3d XPS investigation of cerium oxides and mixed cerium oxide (CexTiyOz)
Surface and interface analysis, 2008-03, Vol.40 (3-4), p.264-267
Bêche, Eric
Charvin, Patrice
Perarnau, Danielle
Abanades, Stéphane
Flamant, Gilles
2008
Volltextzugriff (PDF)
Details
Autor(en) / Beteiligte
Bêche, Eric
Charvin, Patrice
Perarnau, Danielle
Abanades, Stéphane
Flamant, Gilles
Titel
Ce 3d XPS investigation of cerium oxides and mixed cerium oxide (CexTiyOz)
Ist Teil von
Surface and interface analysis, 2008-03, Vol.40 (3-4), p.264-267
Ort / Verlag
Chichester, UK: John Wiley & Sons, Ltd
Erscheinungsjahr
2008
Quelle
Wiley Online Library
Beschreibungen/Notizen
This article presents an XPS study of Ce 3d emission spectra dominated by atomic multiplet effects in core level spectroscopy of rare earth compounds (Ce oxides). Core level spectroscopy has been used to study the electronic states of Ce 3d5/2 and Ce 3d3/2 levels in Ce4+ and Ce3+ states. The well‐resolved components of Ce 3d5/2 and Ce 3d3/2 spin‐orbit components, due to various final states (4f0, 4f1, 4f2 configurations), were determined on 3d XPS spectra from commercial powders (CeO2, CePO4). These results were used to study the 3d spin‐orbit component of mixed cerium‐titanium oxide. This compound was prepared by co‐melting commercial powders of CeO2 and TiO2 at 1800 K under air using a solar furnace with a flux density of 16 MW.m−2 at the focal point of the parabolic concentrator. The mixed oxide Ce2Ti2O7 was produced and contained Ce(III) species which may be reactive with water to give back the initial metal oxides and generate hydrogen, a valuable product considered as a promising energy carrier in the future in replacement of oil. The 3d photoemission spectra revealed the presence of mixed components attributed to mainly Ce(III) and Ce(IV) species. Copyright © 2008 John Wiley & Sons, Ltd.
Sprache
Englisch
Identifikatoren
ISSN: 0142-2421
eISSN: 1096-9918
DOI: 10.1002/sia.2686
Titel-ID: cdi_proquest_miscellaneous_32761128
Format
–
Schlagworte
Ce 3d
,
cerium oxide
,
Condensed matter: electronic structure, electrical, magnetic, and optical properties
,
Condensed matter: structure, mechanical and thermal properties
,
Cross-disciplinary physics: materials science
,
rheology
,
Exact sciences and technology
,
mixed cerium-titanium oxide
,
Physics
,
XPS
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