Artículo
Atomic and electronic structure dependence of surface chemical reactivity: The case of CO adsorption on a Pt/Co surface
Fecha de publicación:
03/2004
Editorial:
Elsevier Science
Revista:
Catalysis Today
ISSN:
0920-5861
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The chemical properties of Pt deposits on Co(0 0 0 1) in the range of Pt coverage up to 1.5 monolayer (ML) are presented. They are checked by CO adsorption at room temperature. We show that the CO total coverage decreases as the Pt coverage increases although both the (apparently) free Co areas as well as the Pt-covered areas do adsorb CO. This is a consequence of the CO/Pt adsorption energy lowering down to 0.8 eV as evaluated experimentally. This is interpreted in view of the observations performed by STM, LEED and photoemission on the Pt-covered surface, before and after CO exposure. Ab initio calculations performed on a Pt monolayer on Co(0 0 0 1) confirm the interpretation. © 2003 Elsevier B.V. All rights reserved.
Palabras clave:
Co
,
Co
,
Experimental
,
Model Catalysts
,
Photoemission (Xps)
,
Pt
,
Stm
,
Surface
,
Theory
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(IFISUR)
Articulos de INSTITUTO DE FISICA DEL SUR
Articulos de INSTITUTO DE FISICA DEL SUR
Citación
Légaré, Pierre; Cabeza, Gabriela Fernanda; Castellani, Norberto Jorge; Atomic and electronic structure dependence of surface chemical reactivity: The case of CO adsorption on a Pt/Co surface; Elsevier Science; Catalysis Today; 89; 3; 3-2004; 363-368
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