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XPS and XANES studies of SnOx nanolayers
Vise andre og tillknytning
2008 (engelsk)Inngår i: Journal of Structural Chemistry, ISSN 0022-4766, E-ISSN 1573-8779, Vol. 49, nr Suppl 1, s. 80-91Artikkel i tidsskrift (Fagfellevurdert) Published
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Abstract [en]

This paper presents the results of our XPS (X-ray photoelectron spectroscopy) and XANES (X-ray absorption near edge structure) Studies of tin oxide nanolayers obtained by magnetron spraying of the metal and its further oxidation in air at different temperatures. It was shown that at 240 degrees C (annealing temperature), tin monoxide was dominant in the surface layer of the samples. When the temperature was increased to 450 degrees C, the phase composition corresponded to tin dioxide. Increased sorption ability was found for the samples oxidized at 450 degrees C. The band structure model of SnOx nanolayers obtained by superposition of the XANES and XPS data revealed cross transitions with energy similar to 3.7 eV in the presence of the SnO and SnO, phases. Surface doping of nanolayers with palladium gave the Pd, PdO, and PdO2 components, among which PdO was most intense. Alternate treatments with O-2 and H-2 gases led to the disappearance of palladium dioxide and the reduction of PdO to the Pd metal. After the volume doping of nanoplayers with palladium, the surface layer contained PdO and PdO2; the latter was represented by two types of particles with different sizes.

sted, utgiver, år, opplag, sider
New York: Springer, 2008. Vol. 49, nr Suppl 1, s. 80-91
Emneord [en]
tin oxides, nanolayers, photoelectron spectra, X-ray absorption near edge structure
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Identifikatorer
URN: urn:nbn:se:umu:diva-117468DOI: 10.1007/s10947-008-0205-2ISI: 000263681200009OAI: oai:DiVA.org:umu-117468DiVA, id: diva2:911719
Tilgjengelig fra: 2016-03-14 Laget: 2016-03-01 Sist oppdatert: 2018-06-07bibliografisk kontrollert

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