Stoichiometry-Dependent Chemical Activity of Supported MgO(100) Films (Articolo in rivista)

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  • Stoichiometry-Dependent Chemical Activity of Supported MgO(100) Films (Articolo in rivista) (literal)
Anno
  • 2011-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1021/jp200069u (literal)
Alternative label
  • Cabailh, G. 2,3, LAZZARI, R 2,3, Cruguel, H. 2,3, Jupille, J. 2,3, Savio, L. 1, Smerieri, M. 1,4, Orzelli, A. 4, Vattuone, L. 1,4, Rocca, M. 1,4 (2011)
    Stoichiometry-Dependent Chemical Activity of Supported MgO(100) Films
    in The journal of physical chemistry. A; American Chemical Society, Washington (Stati Uniti d'America)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Cabailh, G. 2,3, LAZZARI, R 2,3, Cruguel, H. 2,3, Jupille, J. 2,3, Savio, L. 1, Smerieri, M. 1,4, Orzelli, A. 4, Vattuone, L. 1,4, Rocca, M. 1,4 (literal)
Pagina inizio
  • 7161 (literal)
Pagina fine
  • 7168 (literal)
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  • ID_PUMA: cnr.imem/2011-A0-068 (literal)
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  • http://pubs.acs.org/doi/abs/10.1021/jp200069u (literal)
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  • 15 (literal)
Rivista
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  • 25 (literal)
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  • PubMe (literal)
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • [ 1 ] IMEM CNR, I-16146 Genoa, Italy; [ 2 ] CNRS, Inst Nanosci Paris, F-75252 Paris, France; [ 3 ] UPMC, F-75252 Paris, France; [ 4 ] Univ Genoa, Dipartimento Fis, I-16146 Genoa, Italy (literal)
Titolo
  • Stoichiometry-Dependent Chemical Activity of Supported MgO(100) Films (literal)
Abstract
  • Here, we show that the stoichiometry and, consequently, the chemical activity toward hydroxylation of MgO(100) films grown by reactive deposition on Ag(100) strongly depend on the O(2) partial pressure during film growth. Oxygen-deficient films undergo dramatic relative oxygen uptake either by exposure to a partial pressure of water vapor or by aging in vacuum for a sufficiently long time. Conversely, on stoichiometric monolayer MgO islands, photoemission analysis of the O Is level and scanning tunneling microscopy images are consistent with the prediction that dissociative adsorption of water occurs only at the borders of the islands. (literal)
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