Journal
CHINESE JOURNAL OF CATALYSIS
Volume 29, Issue 11, Pages 1089-1092Publisher
SCIENCE PRESS
DOI: 10.1016/S1872-2067(09)60006-1
Keywords
gold; carbon monoxide oxidation; ceria; crystal plane
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Uniformly distributed crystalline nanorods, nanocubes, and nanopolyhedra of ceria were prepared by a hydrothermal method. Au colloid nanoparticles were deposited on the surface of these ceria to obtain Au/CeO2 catalysts. Their catalytic activity for CO oxidation was evaluated, and the effect of the ceria morphology on the activity was investigated. As a support, nanorod (110 + 100) and nanopolyhedra (111 + 100) ceria exhibit higher activity than nanocube (100) ceria. At the lower temperature, Au/nanopolyhedra ceria exhibited better activity, while Au/nanorod ceria was the best catalyst at higher temperature.
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