Synthesis of Zero, One, and Three Dimensional CeO2 Particles and CO Oxidation over CuO/CeO2

doi:10.1016/S1872-2067(10)60251-3

Abstract

Abstract: A method to synthesize zero, one, and three dimensional (0D, 1D, 3D) CeO₂ from single crystal cerium formate by a surfactant-free route using H₂O, ethanol and ethylene glycol as solvents is shown. 0D CeO₂ was composed of aggregated particles of 0.2–0.5 μm. 1D CeO₂ was hexagonal rods that were 25–30 μm in width and more than 500 μm in length. The pine needle shaped 3D CeO₂ was assembled from smooth rods of 1 to 5 µm diameter and up to 50 µm length that had CeO₂ nanoparticles as building units to give 3D micro/nanocomposite structures with a high BET surface area of 234 m²/g. Both 5 wt% CuO/1D CeO₂ and 5 wt% CuO/3D CeO₂ exhibited high catalytic activities for CO conversion due to the high BET surface area and the facile reducibility of surface CeO₂.

Key words: ceria, copper oxide, carbon monoxide, oxidation, nanostructure, Raman spectroscopy

DAN Wen-Juan, LIU Chang, GUO Hong-Juan, YANG Li-Hua, WANG Xiao-Nan, FENG Zhao-Chi. Synthesis of Zero, One, and Three Dimensional CeO2 Particles and CO Oxidation over CuO/CeO2[J]. Chinese Journal of Catalysis, 2011, 32(8): 1336-1341.

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URL: https://www.cjcatal.com/EN/10.1016/S1872-2067(10)60251-3

https://www.cjcatal.com/EN/Y2011/V32/I8/1336

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