ZrO2 Nanopowders Prepared by Low-Temperature Vapor-Phase Hydrolysis |
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| Authors: | Bin Xia Lianyun Duan Youchang Xie |
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| Affiliation: | College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, People's Republic of China |
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| Abstract: | ZrO2 powder is prepared by low-temperature vapor-phase hydrolysis of ZrCl4. TG-DTA, XRD, Raman, BET, and TEM methods are used to investigate the particle size, phase composition, and agglomeration before and after heat treatment. The results show that the as-prepared ZrO2 powder is characterized by large surface area (150 m2/g), fine grain size (5.8 nm), and weak agglomeration. Additionally, the as-prepared ZrO2 powder shows predominantly tetragonal phase attributed to a grain size effect. This route is free of powder drying and calcination processes that are essential for wet chemical preparation, contributing to less agglomeration. |
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| Keywords: | zirconia hydrolysis phase transformations |
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