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First Principles Study of Carbon Monoxide Adsorption on Zirconia-Supported Copper | | Eric J. Walter
; Steven P. Lewis
; Andrew M. Rappe
; | | Date: |
10 Dec 1999 | | Subject: | Materials Science | cond-mat.mtrl-sci | | Abstract: | We have calculated the adsorption energy of carbon monoxide on a monolayer of copper adsorbed on the (111) face of cubic zirconia. We investigate the structural parameters of three phases of bulk zirconia (cubic, tetragonal, and monoclinic) and find excellent agreement with experiment. We have also analyzed the structural relaxation of both the stoichiometric and reduced (111) surfaces of cubic zirconia ($c$-ZrO$_2$). For adsorption of copper on $c$-ZrO$_2$, we find that the preferred binding site is atop the terminal oxygen atom, favored by 0.3 eV over other high symmetry sites. We compare CO adsorption on zirconia-supported copper to the results of carbon monoxide on copper (100) (S. P. Lewis and A. M. Rappe, J. Chem. Phys. {f 110}, 4619,(1999).) and show that adsorption on oxide-supported copper is over 0.2 eV more stable than adsorption on the bare surface. | | Source: | arXiv, cond-mat/9912189 | | Services: | Forum | Review | PDF | Favorites | |
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