期刊
JOURNAL OF CHEMICAL PHYSICS
卷 115, 期 24, 页码 11261-11267出版社
AMER INST PHYSICS
DOI: 10.1063/1.1421107
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We report density functional theory calculations of the interaction of Cu and Pd with the (0001) surface of alpha -Al2O3. The interaction of those metals with the oxide surface varies from covalent-like for the aluminum rich surface to ionic-like for the oxygen terminated surface. Stoichiometric hydroxylation of the surface does not increase the metal-oxide interaction significantly. We suggest that defects created upon hydroxylation are the main mechanism to explain the observed metal wetting of the oxide. (C) 2001 American Institute of Physics.
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