Journal
JOURNAL OF CATALYSIS
Volume 229, Issue 1, Pages 206-212Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcat.2004.11.004
Keywords
CeO2 nanorods; well-defined; crystal planes; CO oxidation
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The crystal plane of ceria plays an essential role in determining its catalytic oxidation properties. In this study, single-crystalline CeO2 nanorods with well-defined crystal planes have been synthesized by a facile solution-based hydrothermal method. HRTEM studies reveal that the predominantly exposed planes are the unusually reactive {001} and {110} in the CeO2 nanorods rather than the stable {111} in the irregular nanoparticles. Consequently, it is demonstrated that the CeO2 nanorods are more reactive for CO oxidation than their counterparts, irregular nanoparticles. The present results indicate that catalysts with well-defined reactive sites may be designed because of the recent development of morphology-control led synthesis of nanostructured materials. (C) 2004 Elsevier Inc. All rights reserved.
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