Size dependent oxygen buffering capacity of ceria nanocrystals

The structural, chemical and electronic changes of ceria as a function of decreasing particle size have been studied: at sizes below 5 nm the total amount of reducible oxygen dramatically increases due to superoxide formation on the ceria surface, a result indicative of a size dependent oxygen buffe...

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Bibliographic Details
Published inChemical communications (Cambridge, England) Vol. 46; no. 11; pp. 1887 - 1889
Main Authors Xu, Jiahui, Harmer, Jeffrey, Li, Guoqiang, Chapman, Thomas, Collier, Paul, Longworth, Sarennah, Tsang, Shik Chi
Format Journal Article
LanguageEnglish
Published England 01.01.2010
Subjects
Buffers
Cerium oxide
Electronics
Nanocrystals
Particle size
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Summary:The structural, chemical and electronic changes of ceria as a function of decreasing particle size have been studied: at sizes below 5 nm the total amount of reducible oxygen dramatically increases due to superoxide formation on the ceria surface, a result indicative of a size dependent oxygen buffering capacity.
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ISSN:1359-7345
1364-548X
DOI:10.1039/b923780a