Catalytic CO oxidation reaction studies on lithographically fabricated platinum nanowire arrays with different oxide supports |
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| Authors: | A. M. Contreras X.-M. Yan S. Kwon J. Bokor G. A. Somorjai |
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| Affiliation: | (1) Department of Chemistry, University of California, Berkeley, CA 94720, USA;(2) Materials and Chemical Sciences Divisions, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA;(3) The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA;(4) Department of Electrical Engineering and Computer Science, University of California, Berkeley, CA 94720, USA |
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| Abstract: | Deep-ultraviolet lithography has been coupled with size-reduction and nanoimprint lithography to create high-density arrays
of 20-nm wide platinum nanowires supported on oxide thin films of silica, alumina, zirconia, and ceria. These nanowire arrays
have been used as two-dimensional platinum model catalyst systems to study the effects of support on catalytic activity during
the catalytic oxidation of carbon monoxide. Strong support dependence is seen for both reaction turnover frequency and the
measured activation energy. In addition, the stability of the nanowire arrays under reaction conditions shows support dependence. |
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| Keywords: | CO oxidation platinum nanowires model catalysis |
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