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Journal article

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

By Helveg, Stig1; Lorensen, Henrik Qvist2; Horch, Sebastian2; Lægsgaard, Erik1; Stensgaard, Ivan1; Jacobsen, Karsten Wedel2; Nørskov, Jens Kehlet2; Besenbacher, Flemming1

From

Aarhus University1

Department of Physics, Technical University of Denmark2

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.

Language: English
Year: 1999
Pages: L533-L539
ISSN: 18792758 and 00396028
Types: Journal article
DOI: 10.1016/S0039-6028(99)00411-2
ORCIDs: Horch, Sebastian , Jacobsen, Karsten Wedel and Nørskov, Jens Kehlet
Keywords

Chemisorption Density functional theory calculations Oxygen Platinum Scanning tunneling microscopy Surface structure

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