Control of Metal Nanocrystal Size Reveals Metal-Support Interface Role for Ceria Catalysts
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- Matteo Cargnello
- Department of Chemical and Pharmaceutical Sciences, ICCOM-CNR, Consortium INSTM, University of Trieste, 34127 Trieste, Italy.
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- Vicky V. T. Doan-Nguyen
- Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, PA 19104, USA.
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- Thomas R. Gordon
- Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104, USA.
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- Rosa E. Diaz
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, NY 11973, USA.
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- Eric A. Stach
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, NY 11973, USA.
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- Raymond J. Gorte
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA 19104, USA.
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- Paolo Fornasiero
- Department of Chemical and Pharmaceutical Sciences, ICCOM-CNR, Consortium INSTM, University of Trieste, 34127 Trieste, Italy.
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- Christopher B. Murray
- Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, PA 19104, USA.
書誌事項
- 公開日
- 2013-08-16
- DOI
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- 10.1126/science.1240148
- 公開者
- American Association for the Advancement of Science (AAAS)
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説明
<jats:title>A Measure of Metal-Oxide Interfaces</jats:title> <jats:p> The rate of a catalytic reaction can sometimes be enhanced by using a different metal oxide as the support for adsorbed metal nanoparticles. Such enhancement is often attributed to more active sites at the metal-oxide interface, but it can be difficult to quantify this effect. <jats:bold> Cargnello <jats:italic>et al.</jats:italic> </jats:bold> (p. <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" issue="6147" page="771" related-article-type="in-this-issue" vol="341" xlink:href="10.1126/science.1240148">771</jats:related-article> , published online 18 July) synthesized monodisperse nanoparticles of nickel, platinum, and palladium and dispersed them on high-surface-area ceria or alumina supports. High-resolution transmission electron microscopy enabled a detailed analysis of interfacial site structure, which showed that the rate of CO oxidation on ceria was indeed enhanced greatly at interface sites. </jats:p>
収録刊行物
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- Science
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Science 341 (6147), 771-773, 2013-08-16
American Association for the Advancement of Science (AAAS)
