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Oxygen vacancy pairs on CeO2(110): A DFT + U study
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2009 (English)In: Physics Letters A, ISSN 0375-9601, Vol. 373, no 31, 2786-2792 p.Article in journal (Refereed) Published
Abstract [en]

Oxygen vacancy pairs have been suggested to play a role in the reduction of NO molecules on ceria and for the oxidation processes of reducible rare-earth oxides. The formation energy of the oxygen vacancy pairs and the changes in the structural and electronic properties of the ceria (110) surface with oxygen vacancy pairs are investigated using density-functional theory (DFT + U) methodology within the generalized gradient approximation. It is found that the excess electrons localize on the Ce ions neighbouring the vacancies, and the most stable structure for the oxygen vacancy pairs on the ceria (110) surface is at next-nearest-neighbour site.

Place, publisher, year, edition, pages
Elsevier B.V. , 2009. Vol. 373, no 31, 2786-2792 p.
Keyword [en]
Oxygen vacancy pair, CeO2(110), Formation energy, Electronic properties, DFT + U
National Category
Chemical Sciences
Research subject
Inorganic Chemistry
URN: urn:nbn:se:uu:diva-121460DOI: 10.1016/j.physleta.2009.05.055ISI: 000268533700036OAI: oai:DiVA.org:uu-121460DiVA: diva2:305426
Available from: 2010-03-23 Created: 2010-03-23 Last updated: 2014-07-25Bibliographically approved

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