Oxygen adsorption on Pt(110)-(1x2): new high-coverage structures

Stig Helveg, Henrik Qvist Lorensen, Sebastian Horch, Erik Lægsgaard, Ivan Stensgaard, Karsten Wedel Jacobsen, Jens Kehlet Nørskov, Flemming Besenbacher

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From an interplay between scanning tunneling microscopy (STM) experiments and density functional theory (DFT) calculations, a comprehensive picture is obtained for oxygen adsorption on the Pt(110)-(1 x 2) surface, from single isolated oxygen atoms chemisorbed in FCC sites along the platinum ridges to the formation of a new high-coverage oxide-like structure with a local coverage of two oxygen atoms per platinum surface atom. We find that the repulsive O-O interactions for the O/Pt(110) system are compensated by an effective O-O attractive interaction originating from a strong coupling between oxygen adsorption and platinum lattice distortions. (C) 1999 Elsevier Science B.V. All rights reserved.
Original languageEnglish
JournalSurface Science
Issue number1-3
Pages (from-to)L533-L539
Publication statusPublished - 1999


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