CO interactions with copper-covered Ru(0001)
- 1 April 1983
- journal article
- Published by American Vacuum Society in Journal of Vacuum Science & Technology A
- Vol. 1 (2) , 1185-1187
- https://doi.org/10.1116/1.571894
Abstract
Photoemission-thermal desorption studies for saturation coverage CO on submonolayer Cu-covered Ru(0001), and self-consistent total-energy calculations for CO bound to small-cluster analogs of Cu(111), Ru(0001), and Cu/Ru(0001) chemisorption geometries are reported. New Cu-perturbed Ru binding sites are observed experimentally with (∼25%) reduced activation energy for desorption and increased molecular photoelectron binding energies (∼0.3 eV) relative to CO/Ru(0001). The mixed-metal cluster calculation provides a description of a possible precursor intermediate state for CO desorption, in qualitative accord with experiment.Keywords
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