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Type: Artigo de periódico
Title: X-ray Absorption And Xps Study Of Titanium Mixed Oxides Synthesized By The Sol-gel Method
Author: Goncalves J.E.
Castro S.C.
Ramos A.Y.
Alves M.C.M.
Gushikem Y.
Abstract: The mixed oxides SiO2/TiO2 and SiO2/TiO2/Sb2O5 were prepared with different Ti and Sb amounts and investigated by X-ray photoelectron spectroscopy (XPS) and X-ray absorption spectroscopy (XAS) at the Ti K edge. There is no evidence for structural modification of titanium environment in the samples having between 5.6 and 20.3 wt% of TiO2. All the experimental evidence indicates that titanium has a local environment close to that of TiO2 anatase. XAS show that this similarity is extends up to the next neighbouring Ti shells. XPS analysis shows that Ti and Sb are present as TiO2 and Sb2O5.
Editor: Elsevier Science Publishers B.V., Amsterdam, Netherlands
Rights: fechado
Identifier DOI: 10.1016/S0368-2048(00)00323-6
Date Issue: 2001
Appears in Collections:Unicamp - Artigos e Outros Documentos

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