Oxidation-Resistant Gold-55 Clusters-Reference-Cited by-同舟云学术

Oxidation-Resistant Gold-55 Clusters

Published:2002-08-30 Issue:5586 Volume:297 Page:1533-1536
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Boyen H.-G.¹,Kästle G.¹,Weigl F.¹,Koslowski B.¹,Dietrich C.¹,Ziemann P.¹,Spatz J. P.²,Riethmüller S.³,Hartmann C.³,Möller M.³,Schmid G.⁴,Garnier M. G.⁵,Oelhafen P.⁵

Affiliation:

1. Abteilung Festkörperphysik,

2. Physikalisch Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 253, D-69120 Heidelberg, Germany.

3. Abteilung Organische Chemie III, Universität Ulm, D-89069 Ulm, Germany.

4. Institut für Anorganische Chemie, Universität GH Essen, Universitätsstrasse 5-7, D-45117 Essen, Germany.

5. Institut für Physik, Universität Basel, Klingelbergstrasse 82, CH-4056 Basel, Switzerland.

Abstract

Gold nanoparticles ranging in diameter from 1 to 8 nanometers were prepared on top of silicon wafers in order to study the size dependence of their oxidation behavior when exposed to atomic oxygen. X-ray photoelectron spectroscopy showed a maximum oxidation resistance for “magic-number” clusters containing 55 gold atoms. This inertness is not related to electron confinement leading to a size-induced metal-to-insulator transition, but rather seems to be linked to the closed-shell structure of such magic clusters. The result additionally suggests that gold-55 clusters may act as especially effective oxidation catalysts, such as for oxidizing carbon monoxide.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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