Synergetic effects in CO adsorption on Cu-Pd(111) alloys

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We present density functional calculations for the interaction of CO on different Cu-Pd(111) bulk and surface alloys. The modification of the adsorption properties with respect to hose of the adsorption on pure Cu(111) and Pd(111) is described in terms of changes in the adsorption sites and the change of the electronic structure occurring upon alloying. The presence of cooperative, synergetic. effects is found to be important specially for Cu-rich bulk alloys. In this case. a larger adsorption energy is found for the inactive component than for the pure inactive system. This activation induces a larger reactivity than might be expected, from the position of the Pd d-band. for the active Pd centers. (C) 2001 Elsevier Science B.V. All rights reserved.
Original languageEnglish
JournalSurface Science
Issue number1
Pages (from-to)59
Publication statusPublished - 2001


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