Room-temperature oxidation of reduced Cu/ZnO surfaces by lattice oxygen diffusion |
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| Authors: | Jesse A. Ahlers Jordan A. Grasser Brett T. Loveless Darrin S. Muggli |
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| Affiliation: | (1) Department of Chemical Engineering, University of North Dakota, Grand Forks, ND 58202, USA |
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| Abstract: | At room temperature in the absence of gas-phase oxygen, reduced Cu on Cu/ZnO extracts oxygen from the ZnO lattice to reoxidize the surface. After 120 min at room temperature, diffusion of lattice oxygen reoxidizes reduced Cu/ZnO to 3% of its completely oxidized state. When gas-phase oxygen is present, it promotes the partial reoxidation of the reduced Cu/ZnO surface at room-temperature. |
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| Keywords: | room temperature oxidation |
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