La1-xCaxCoO3 PEROVSKITE-TYPE OXIDES. IDENTIFICATION OF THE SURFACE OXYGEN SPECIES BY XPS

MERINO, NORA; BARBERO, BIBIANA P; ELOY, P.; LUIS EDUARDO CADUS

APPLIED SURFACE SCIENCE

Elsevier

Año: 2006 vol. 253 p. 1489 - 1493

0169-4332

Abstract A detailed study of the La1xCaxCoO3 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 (l0) can be estimated from the XPS atomic ratio. the XPS atomic ratio. species involved in the catalytic reaction and discriminate them. Mainly, the concentration of surface oxygen vacancies (l0) can be estimated from the XPS atomic ratio. the XPS atomic ratio. 1xCaxCoO3 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 (l0) can be estimated from the XPS atomic ratio. the XPS atomic ratio. l0) can be estimated from the XPS atomic ratio.