Title: Compositional changes of Pd-Au bimetallic nanoclusters upon hydrogenation
Authors: Di Vece, M ×
Bals, S
Verbeeck, J
Lievens, Peter
Van Tendeloo, G #
Issue Date: Sep-2009
Publisher: Amer physical soc
Series Title: Physical review b vol:80 issue:12 pages:1-4
Article number: 125420
Abstract: Changes in the size distribution and composition of bimetallic Pd-Au nanoclusters have been observed after hydrogen exposure. This effect is caused by hydrogen-induced Ostwald ripening whereby the hydrogen reduces the binding energy of the cluster atoms leading to their detachment from the cluster. The composition changes due to a difference in mobility of the detached palladium and gold atoms on the surface. Fast palladium atoms contribute to the formation of larger nanoclusters, while the slower gold atoms are confined to the smaller nanoclusters. These transformations in the Pd-Au nanocluster size and composition set a limit for chemical reactions in which such nanoclusters are involved together with hydrogen.
ISSN: 1098-0121
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Solid State Physics and Magnetism Section
× corresponding author
# (joint) last author

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