Unexpected behavior of the surface composition of PtRh alloys during chemical reaction (Articolo in rivista)

Type
Label
  • Unexpected behavior of the surface composition of PtRh alloys during chemical reaction (Articolo in rivista) (literal)
Anno
  • 2005-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1021/ja044372+ (literal)
Alternative label
  • A. Baraldi (1,2,3), D. Giacomello (1), L. Rumiz (4), M. Moretuzzo (1), S. Lizzit (4), F.Buatier de Mongeot (5), G. Paolucci (4), G. Comelli (1,2,3), R. Rosei (1,2,3), B.E. Nieuwenhuys (6), U. Valbusa (5), M.P. Kiskinova (4) (2005)
    Unexpected behavior of the surface composition of PtRh alloys during chemical reaction
    in Journal of the American Chemical Society (Print); ACS, American chemical society, Washington, DC (Stati Uniti d'America)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • A. Baraldi (1,2,3), D. Giacomello (1), L. Rumiz (4), M. Moretuzzo (1), S. Lizzit (4), F.Buatier de Mongeot (5), G. Paolucci (4), G. Comelli (1,2,3), R. Rosei (1,2,3), B.E. Nieuwenhuys (6), U. Valbusa (5), M.P. Kiskinova (4) (literal)
Pagina inizio
  • 5671 (literal)
Pagina fine
  • 5674 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 127 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 15 (literal)
Note
  • ISI Web of Science (WOS) (literal)
  • Scopus (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • (1) Dipartimento di Fisica, UniVersita` di Trieste, Via Valerio 2, 34127 Trieste, Italy; (2) Laboratorio TASC-INFM, S.S. 14 Km 163.5, 34012 Trieste, Italy; (3) CENMAT Center of Excellence for Nanostructured Materials, Via Valerio 2, 34127, Trieste, Italy; (4) Sincrotrone Trieste S.C.p.A., S.S. 14 Km 163.5, 34012 Trieste, Italy; (5) INFM Unità di Genova and Dipartimento di Fisica, Via Dodecaneso 33, I-16146 Genova, Italy; (6) Leiden Institute of Chemistry, Leiden UniVersity, NL-2300 RA Leiden, The Netherlands (literal)
Titolo
  • Unexpected behavior of the surface composition of PtRh alloys during chemical reaction (literal)
Abstract
  • The changes in the surface composition of a Pt50Rh50(100) alloy due to an ongoing 2H(2) + O-2-2H(2)O chemical reaction have been studied in situ. Exploiting the high-energy resolution and surface sensitivity of synchrotron radiation core-level spectroscopy it was possible to monitor the population of the two transitions metals atoms at the gas-surface interface. Sequences of fast high-resolution core-level spectra of the Rh3d(5/2), Pt4f(7/2), and O1s core levels showed a continuous exchange of atoms between the first and subsurface layers. An unexpected Pt surface enrichement was found under slightly oxidizing conditions, opposite to what found in a highly oxidizing atmosphere. (literal)
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