Growth behavior of nanosized ceria powders prepared by coprecipitation routes |
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| Authors: | GuoLi Yang Horng-Huey Ko Yu-Wei Hsu Ko-Ho Yang Moo-Chin Wang Jianjun Han Xiu Jian Zhao |
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| Affiliation: | 1. State Key Laboratory of Silicate Materials for Architectures (Wuhan University of Technology), Wuhan 430070, People''s Republic of China;2. Department of Fragrance and Cosmetic Science, Kaohsiung Medical University, 100 Shih-Chuan 1st Road, Kaohsiung 80708, Taiwan;3. Graduate Institute of Applied Science, National Kaohsiung University of Applied Sciences, 415 Chien-Kung Road, Kaohsiung 80782, Taiwan |
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| Abstract: | Nanosized ceria (CeO2) powders were obtained by coprecipitation routes of cerium nitrate hexahydrate [Ce(NO3)3·6H2O]. The growth behavior of the nanosized CeO2 powders was investigated by X-ray diffraction, transmission electron microscopy and selected area electron diffraction. The XRD results showed that the dried precursor powders contained a single crystalline phase of CeO2, and only a single phase of CeO2 appeared when the dried precursor powders were calcined at different temperatures for various durations. Moreover, the crystallite size of CeO2 increased on increasing the calcination temperature and duration. The kinetics equation of the nanosized CeO2 powders grown between 673 and 1273 K for various durations is described as |
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| Keywords: | Ceria Coprecipitation powders Kinetic equation |
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