Two-step reaction on a strained, nanoscale segmented surface (Articolo in rivista)

Type
Label
  • Two-step reaction on a strained, nanoscale segmented surface (Articolo in rivista) (literal)
Anno
  • 2004-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1103/PhysRevLett.93.126104 (literal)
Alternative label
  • Africh, C (1,2); Esch, F (2); Li, WX (3); Corso, M (1,2); Hammer, B (3); Rosei, R (1,2); Comelli, G (1,2) (2004)
    Two-step reaction on a strained, nanoscale segmented surface
    in Physical review letters (Print); American Physical Society (APS), College Pk (Stati Uniti d'America)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Africh, C (1,2); Esch, F (2); Li, WX (3); Corso, M (1,2); Hammer, B (3); Rosei, R (1,2); Comelli, G (1,2) (literal)
Pagina inizio
  • 126104 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 93 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 4 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 12 (literal)
Note
  • ISI Web of Science (WOS) (literal)
  • Scopu (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • (1) Univ Trieste, Dept Phys and Ctr Excellence Nanostructured Mat, I-34127 Trieste, Italy; (2) TASC INFM Lab, I-34012 Trieste, Italy; (3) Interdisciplinary Nanoscience Center (iNANO) and Department of Physics and Astronomy, University of Aarhus, DK-8000 Aarhus C, Denmark (literal)
Titolo
  • Two-step reaction on a strained, nanoscale segmented surface (literal)
Abstract
  • By means of scanning tunneling microscopy and density functional theory calculations we demonstrate that on the Rh(110)-(10x2)-O surface, a prototypical multiphase surface of an oxidized transition metal model catalyst, water formation upon H-2 exposure is a two-step reaction, with each step requiring special active sites. The 1st step initiates at (2x1)p2mg-O defect islands in the (10x2) structure and propagates across the surface as a reaction front, removing half of the adsorbed oxygen. The oxygen decorated Rh ridges of the (10x2) structure lose their tensile strain upon this reduction step, whereby nanoscale patches of clean Rh become exposed and act as special reaction sites in the 2nd reaction step, which therefore initiates homogeneously over the entire surface. (literal)
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