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Valence-band x-ray photoelectron spectroscopic studies of different forms of sodium phosphate

Authors :
Karen J. Gaskell
Peter M. A. Sherwood
Amy L. Asunskis
Daniel J. Asunskis
Source :
Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films. 21:1126-1132
Publication Year :
2003
Publisher :
American Vacuum Society, 2003.

Abstract

This article reports the valence-band x-ray photoelectron spectroscopy (XPS) of various forms of sodium phosphate. Valence-band spectra are compared to spectra generated from cluster and band-structure calculations. Five different forms of sodium phosphate are studied as follows, Na4P2O7, Na5P3O10, Na4P4O12, Na2H2P2O7, and NaH2PO2. Core-level XPS studies are of little use for differentiating between such similar compounds while valence band photoemission has been found to be particularly effective at identifying subtle differences in surface chemistry. The results indicate that the valence-band region clearly distinguishes between these different phosphates and that these differences can be predicted by spectra generated from both cluster and band-structure calculations.

Details

ISSN :
15208559 and 07342101
Volume :
21
Database :
OpenAIRE
Journal :
Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films
Accession number :
edsair.doi...........da783f5ca770ec12ef27fc0e49516209
Full Text :
https://doi.org/10.1116/1.1575221