SrTiO 3(100) step sites as catalytic centers for H 2O dissociation

Features arising from surface Sr(Ti) atoms on the SrO(TiO 2) terraces of SrTiO 3 (100) have been resolved in core-level photoemission spectra, which provides new insights into the surface electronic structure and reactivity of transition metal oxides. The surface Sr 3 d (Ti3 s) features lie to lower...

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Bibliographic Details
Published inSolid state communications Vol. 64; no. 3; pp. 383 - 386
Main Authors Brookes, N.B., Thornton, G., Quinn, F.M.
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 1987
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Summary:Features arising from surface Sr(Ti) atoms on the SrO(TiO 2) terraces of SrTiO 3 (100) have been resolved in core-level photoemission spectra, which provides new insights into the surface electronic structure and reactivity of transition metal oxides. The surface Sr 3 d (Ti3 s) features lie to lower (higher) initial energy of the bulk-derived peaks by ca. 1.0 eV (1.7 eV), being consistent with the expected enhancement of covalent bonding in the TiO 2-terrace surface. Step-sites, which connect the two types of terrace, are found to act as catalytic centers for H 2O dissociation.
ISSN:0038-1098
1879-2766
DOI:10.1016/0038-1098(87)90988-4