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  Interaction of water with FeO(111)/Pt(111): Environmental effects and influence of oxygen

Ringleb, F., Fujimori, Y., Wang, H.-F., Ariga, H., Carrasco, E., Sterrer, M., et al. (2011). Interaction of water with FeO(111)/Pt(111): Environmental effects and influence of oxygen. The Journal of Physical Chemistry C, 115(39), 19328-19335. doi:10.1021/jp207332n.

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Ringleb, Franziska1, Author              
Fujimori, Yuichi1, Author              
Wang, Hui-Feng1, Author              
Ariga, Hiroko1, Author
Carrasco, Esther1, Author              
Sterrer, Martin1, Author              
Freund, Hans-Joachim1, Author              
Giordano, Livia2, Author
Pacchioni, Gianfranco2, Author
Goniakowski, Jacek3, Author
Affiliations:
1Chemical Physics, Fritz Haber Institute, Max Planck Society, Berlin, DE, ou_24022              
2Dipartimento di Scienza dei Materiali, Univ. di Milano-Bicocca, Milano, Italy, ou_persistent22              
3CNRS, Inst. des Nanosciences de Paris, UMR 7588, Paris, France, ou_persistent22              

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 Abstract: The structural and chemical properties of a monolayer FeO(111)/Pt(111) exposed to air, liquid water, and controlled atmospheres of water vapor and water vapor/oxygen mixtures have been studied by a combination of infrared spectroscopy, X-ray photoelectron spectroscopy, and scanning tunneling microscopy experiments together with density functional calculations using ab initio thermodynamics. The FeO(111)/Pt(111) film is inert toward pure water vapor up to mbar pressure. Coadsorption of oxygen and water, however, transforms the film into a hydroxyl terminated trilayer with a (Pt−)O–Fe–OH structural motif. The trilayer film forms spontaneously upon contact of FeO(111)/Pt(111) with air and preserves long-range order even in liquid water. The calculated phase diagram in the relevant range of oxygen and water chemical potentials is in agreement with the experimental results and shows that the oxygen chemical potential is the main driving force for the formation of the trilayer film. Results for Au nucleation on and CO oxidation over the FeO(OH) film are presented and compared to previous studies on nonhydroxylated films.

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Language(s): eng - English
 Dates: 2011-08-232011-08-012011-08-242011-08-242011-10-06
 Publication Status: Published in print
 Pages: 8
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1021/jp207332n
 Degree: -

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Title: The Journal of Physical Chemistry C
  Other : J. Phys. Chem. C
Source Genre: Journal
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Publ. Info: Washington DC : American Chemical Society
Pages: - Volume / Issue: 115 (39) Sequence Number: - Start / End Page: 19328 - 19335 Identifier: ISSN: 1932-7447
CoNE: https://pure.mpg.de/cone/journals/resource/954926947766