La1−xCaxCoO3 perovskite-type oxides: Identification of the surface oxygen species by XPS |
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| Authors: | Nora A. Merino Pierre Eloy |
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| Affiliation: | a Instituto de Investigaciones en Tecnología Química (INTEQUI), UNSL—CONICET, Casilla de Correo 290, 5700 San Luis, Argentina
b Université Catholique de Louvain, Croix du Sud 2, Boite 17, 1348 Louvain-la-Neuve, Belgium |
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| Abstract: | A detailed study of the La1−xCaxCoO3 perovskites surface by XPS was carried out since this is a potentially useful tool to identify the oxygen species involved in the catalytic reaction and discriminate them. Mainly, the concentration of surface oxygen vacancies (λ′) can be estimated from the XPS atomic ratio. |
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| Keywords: | 82.65.+r 81.05.Je 68.43.&minus h 68.47.Gh 82.80.Pv |
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