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  Copper(110) surface in thermodynamic equilibrium with water vapor studied from first principles

Baghbanpourasl, A., Hingerl, K., Wippermann, S. M., & Schmidt, W. G. (2013). Copper(110) surface in thermodynamic equilibrium with water vapor studied from first principles. Surface Science, 612, 82-89. doi:10.1016/j.susc.2013.02.016.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0026-C2C7-D Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0026-C2C9-9
Genre: Journal Article

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 Creators:
Baghbanpourasl, Amirreza1, Author              
Hingerl, Kurt1, Author              
Wippermann, Stefan Martin2, Author              
Schmidt, Wolf Gero3, Author              
Affiliations:
1Center for Surface and Nanoanalytics, Johannes Kepler University Linz, Altenbergerstr. 69, A-4040 Linz, Austria, ou_persistent22              
2Department of Theoretical Physics, Paderborn University, 33095 Paderborn, Germany, ou_persistent22              
3Lehrstuhl für Theoretische Physik, Universität Paderborn, 33095 Paderborn, Germany, ou_persistent22              

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Free keywords: Copper; Water; Adsorption; DFT; Cu(110); Phase diagram
 Abstract: The adsorption of water monomers, small water clusters, water chains and water thin films on the Cu(110) surface is studied by density-functional theory (DFT) as well as using a semi-empirical scheme to include dispersion forces (DFT-D). Among the cluster structures, tetramers are most favorable. The calculated surface phase diagrams show that out of the multitude of Cu(110)-adsorbed water structures studied here (and proposed in earlier experimental and theoretical works) only monolayers resembling water ice, water-hydroxyl group layers stabilized by Bjerrum defects, and - in a narrow range of the water chemical potential - chains assembled from water pentagons are thermodynamically stable. The inclusion of van der Waals interaction increases the calculated adsorption energies, but has only minor consequences for the energetic ordering of adsorption geometries. It increases the calculated desorption temperatures from 60 K in low pressures until 150 K in near ambient pressures. (C) 2013 Elsevier B.V. All rights reserved.

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Language(s): eng - English
 Dates: 2013-06
 Publication Status: Published in print
 Pages: 8
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Degree: -

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Title: Surface Science
  Abbreviation : Surf. Sci.
Source Genre: Journal
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Publ. Info: Amsterdam : Elsevier
Pages: - Volume / Issue: 612 Sequence Number: - Start / End Page: 82 - 89 Identifier: ISSN: 0039-6028
CoNE: /journals/resource/0039-6028