Journal
COMPUTATIONAL MATERIALS SCIENCE
Volume 35, Issue 3, Pages 371-374Publisher
ELSEVIER
DOI: 10.1016/j.commatsci.2004.10.013
Keywords
cluster oxidation; density functional theory
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The adsorption sites Of O-2 on neutral Pd-N clusters (N = 1-4) were studied using spin density functional theory. Only for Pd1O2 molecular adsorption is found to be favorable. For Pd2-4O2 dissociative adsorption with the oxygen sitting on Pd bridge sites is preferred. Most Pd clusters remain in the same high spin states found for pure gas phase Pd clusters. Only the ground state of Pd4O2 increase its spin from a triplet to a quintet state. For molecular adsorption the O-O bond gets activated to a superoxo-like state. (c) 2005 Elsevier B.V. All rights reserved.
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