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Density functional theory calculations for the CeO 2 (111) surface doped with Au, Ag, and Cu show that the bond between the oxygen atoms and the oxide is weakened by presence of the dopant. In CO oxidation, doping of CeO 2 with Au allows the oxide to react readily with CO and make carbonates. These decompose to release CO 2 and form an oxygen vacancy on the surface. The vacancy...
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