K-stabilized high-oxygen-coverage states on Rh(110): A low-pressure pathway to formation of surface oxide (Articolo in rivista)

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Label
  • K-stabilized high-oxygen-coverage states on Rh(110): A low-pressure pathway to formation of surface oxide (Articolo in rivista) (literal)
Anno
  • 2005-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1021/jp050988p (literal)
Alternative label
  • Gunther, S (1); Esch, F (2); del Turco, M (2,3); Africh, C (2,3); Comelli, G (2,3); Kiskinova, M (4) (2005)
    K-stabilized high-oxygen-coverage states on Rh(110): A low-pressure pathway to formation of surface oxide
    in The journal of physical chemistry. B; American Chemical Society, Washington (Stati Uniti d'America)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Gunther, S (1); Esch, F (2); del Turco, M (2,3); Africh, C (2,3); Comelli, G (2,3); Kiskinova, M (4) (literal)
Pagina inizio
  • 11980 (literal)
Pagina fine
  • 11985 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 109 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 24 (literal)
Note
  • ISI Web of Science (WOS) (literal)
  • Scopus (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • (1) Univ Munich, Dept Chem, D-81377 Munich, Germany; (2) INFM, Lab TASC, I-34012 Trieste, Italy; (3) Univ Trieste, Dept Phys and Ctr Excellence Nanostruct Mat, I-34127 Trieste, Italy; (4) Sincrotrone Trieste, I-34012 Trieste, Italy (literal)
Titolo
  • K-stabilized high-oxygen-coverage states on Rh(110): A low-pressure pathway to formation of surface oxide (literal)
Abstract
  • Using scanning tunneling microscopy, low-energy electron diffraction, and X-ray photoelectron spectroscopy. we studied the evolution of the structure and chemical state of a Rh(110) surface, modified by K adlayers and exposed to high O-2 doses at elevated temperatures, We find that oxygen coadsorption on the K-covered Rh(110) leads to massive reconstruction of the Rh(110) surface. Stable reconstructed (10 x 2) and (8 x 2) segmented phases with a local coverage of more than two oxygen atoms per surface Rh atom were observed. Formation of surface oxide, which coexists with the (10 x 2) and (8 x 2) segmented adsorption phases, is evidenced at the highest O-2 doses. The development of strongly reconstructed adsorption phases with oxide-like stoichiometry and surface oxide under UHV conditions is explained in terms of the stabilization of the (1 x 2) reconstruction and promotion of O-2 dissociation by the K adatoms. (literal)
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