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  Au,@ZrO2 yolk-shell catalysts for CO oxidation: Study of particle size effect by ex-post size control of Au cores

Güttel, R., Paul, M., Galeano Nunez, D. C., & Schüth, F. (2012). Au,@ZrO2 yolk-shell catalysts for CO oxidation: Study of particle size effect by ex-post size control of Au cores. Journal of Catalysis, 289, 100-104. doi:10.1016/j.jcat.2012.01.021.

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 Creators:
Güttel, Robert1, Author              
Paul, Michael1, Author              
Galeano Nunez, Diana Carolina1, Author              
Schüth, Ferdi1, Author              
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1Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, DE, ou_1445589              

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Free keywords: Yolk-shell catalysts; Gold; Carbon monoxide oxidation; Particle size effect; Nanoparticles
 Abstract: Gold nanoparticles supported on transition metal oxides are found to exhibit a pronounced particle size effect in CO oxidation. However, the preparation of comparable supported gold nanoparticles with different sizes remains challenging, since the catalytic behavior of these materials is very sensitive to the preparation conditions. To overcome this difficulty, Au, @ZrO2 catalysts with gold core sizes between 5 and 15 nm were prepared by partial leaching of gold in an ex-post manner. The material obtained offers a unique comparability for particle size effect studies in CO oxidation. No effect of gold particle size was observed in the studied size range. (C) 2012 Elsevier Inc. All rights reserved

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 Dates: 2012-05-01
 Publication Status: Published in print
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 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1016/j.jcat.2012.01.021
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Title: Journal of Catalysis
Source Genre: Journal
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Pages: - Volume / Issue: 289 Sequence Number: - Start / End Page: 100 - 104 Identifier: ISSN: 0021-9517