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  Impact of the vapour pressure of water on the equilibrium shape of ZnO nanoparticles: An ab-initio study

Kenmoe, S., Todorova, M., Biedermann, P. U., & Neugebauer, J. (2014). Impact of the vapour pressure of water on the equilibrium shape of ZnO nanoparticles: An ab-initio study. In APS March Meeting 2014, abstract #Q2.009.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-0028-493E-D Version Permalink: https://hdl.handle.net/11858/00-001M-0000-0028-4959-F
Genre: Meeting Abstract

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http://absimage.aps.org/image/MAR14/MWS_MAR14-2013-002816.pdf (Supplementary material)
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 Creators:
Kenmoe, Stephane1, Author           
Todorova, Mira2, Author           
Biedermann, Paul Ulrich3, Author           
Neugebauer, Jörg2, Author           
Affiliations:
1Atomistic Modelling in Interface Science, Interface Chemistry and Surface Engineering, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_1863351              
2Computational Materials Design, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_1863337              
3Atomistic Modelling, Interface Chemistry and Surface Engineering, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_1863350              

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 Abstract: ZnO powders and nanoparticles are used as catalysts and have potential applications in gas-sensing and solar energy conversion. A fundamental understanding of the exposed crystal facets, their surface chemistry and stability as function of environmental conditions is essential for rational design and improvement of synthesis and properties. Using density-functional theory cal- culations we study the adsorption of water on the non-polar low-index (1010) and (1120) surfaces of ZnO. Observing both molecular and dissociative H2O adsorption, we analyse the contributions of water-surface and water-water interactions to the energies of the stable structure. Based on this insight we compute and analyse the impact of water adsorption on surface energies and the equilibrium shape of nanoparticles in a humid environment.

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Language(s): eng - English
 Dates: 2014-03
 Publication Status: Issued
 Pages: -
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 Rev. Type: -
 Identifiers: Other: BAPS.2014.MAR.Q2.9
Other: 2014APS..MAR.Q2009K
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Title: APS March Meeting 2014
Place of Event: Denver, CO, USA
Start-/End Date: 2014-03-03 - 2014-03-07

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Title: APS March Meeting 2014, abstract #Q2.009
Source Genre: Proceedings
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