Journal of Shanghai Normal University (Natural Sciences) | |
Synthesis of mesocrystal CeO2 hollow spheres and their catalytic performance on CO oxidation | |
CHEN Feifei1  BIAN Zhenfeng2  CAO Fenglei2  WANG Jinguo2  | |
[1] College of Environmental and Chemical Engineering,Shanghai University of Electric Power;College of Life and Environment Sciences,Shanghai Normal University; | |
关键词: mesocrystal; CeO2 hollow sphere; CO oxidation; high energy facets; | |
DOI : | |
来源: DOAJ |
【 摘 要 】
The highly active mesocrystal CeO2 hollow spheres with exposed (110) high energy facets were synthesized by hydrothermal process.We studied the formation process and proposed the formation mechanism.The as-synthesized catalyst was characterized by the X-ray diffraction,transmission electron microscopy,and N2 adsorption-desorption isotherms.It was found that the mesocrystal CeO2 hollow spheres had porous structure and high specific surface area (259 m2/g).The catalytic oxidation of CO to CO2 was selected as the model reaction to characterize the performance of the mesocrystal CeO2.The result showed that the mesocrystal CeO2 hollow spheres displayed higher catalytic activity than the commercial CeO2 sample mainly due to their mesocrystal structure,high surface area,the hollow structure,and the exposed (110) high energy facets.
【 授权许可】
Unknown