期刊
JOURNAL OF PHYSICAL CHEMISTRY C
卷 113, 期 52, 页码 21520-21525出版社
AMER CHEMICAL SOC
DOI: 10.1021/jp9065168
关键词
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资金
- Shanghai Leading Academic Discipline Project [J50101]
- Science and Technology Commission of Shanghai [0852 nm00700]
Large-scale CeO2 spherical architectures composed of numerous nanoflakes have been controllably prepared through a simple hydrothermal reaction without any template. The products were characterized with X-ray diffraction, nitrogen adsorption-desorption experiments, transmission electron microscopy (TEM), and high-resolution transmission electron microscopy (HRTEM). It was found that the CeO2 architecture ca. 100-230 nm in diameter was made tip of many nanoflakes with a BET surface of 24 m(2)/g. The possible mechanism for the nanostructures formation was discussed. The catalytic performance of CeO2 nanospheres and the direct-depositing CeO2 nanoparticles in CO oxidation were also tested, and the catalytic results were compared and explained by analyzing the exposed planes of the two.
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