Evolution of small copper clusters and dissociative chemisorption of hydrogen

Galip H. Guvelioglu, Pingping Ma, Xiaoyi He, Robert C. Forrey, Hansong Cheng

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125 Scopus citations

Abstract

The structural evolution of small copper clusters of up to 15 atoms and the dissociative chemisorption of H2 on the minimum energy clusters are studied systematically using density functional theory. The preferred copper sites for chemisorption are identified and the transition state structures and activation barriers for clusters four to nine atoms are determined and found to be inconsistent with the empirical Brønsted-Evans-Polanyi relationship. The physicochemical properties of the clusters are computed and compared with the bulk and surface values. The results indicate that a phase transition must occur in the going from cluster to bulk.

Original languageEnglish (US)
Article number026103
JournalPhysical review letters
Volume94
Issue number2
DOIs
StatePublished - Jan 21 2005

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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