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Preparation of Core/Shell Structure of α-Al(OH)3-SiO2 by Heterogeneous Nucleation-and-Growth Processing

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Abstract

In order to solve the difficult problem of heterogeneity of different components in the procedure of ceramic preparation, a novel processing (heterogeneous nucleation-and-growth processing) was used to prepare homogeneous distribution powders. Composite coating particles consisting of alpha aluminum hydroxide (α-Al(OH)3) cores (average particle size 0.42 μm) with outer homogeneous amorphous silica layer are prepared by heterogeneous nucleation-and-growth processing. Effects of silica content in composite coating particles versus concentration of silicon tetraethoxide (TEOS), pH value, time and temperature are studied. The homogeneous amorphous silica layer on cores is confirmed by X-ray diffraction, transmission electron microscopy and zeta potential measurement.

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Authors and Affiliations

  1. National Laboratory of Solid State Microstructures, and Department of Materials Science and Engineering, Nanjing University, Nanjing, 210093, People's Republic of China

    Yuefeng Tang & Aidong Li

  2. College of Materials Science and Engineering, Nanjing University of Technology, Nanjing, 210009, People's Republic of China

    Yinong Lü, Xiaoyun Li, Shuzhe Shi & Zhida Ling

Authors
  1. Yuefeng Tang
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  2. Aidong Li
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  3. Yinong Lü
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  4. Xiaoyun Li
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  5. Shuzhe Shi
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  6. Zhida Ling
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Tang, Y., Li, A., Lü, Y. et al. Preparation of Core/Shell Structure of α-Al(OH)3-SiO2 by Heterogeneous Nucleation-and-Growth Processing. Journal of Sol-Gel Science and Technology 27, 263–265 (2003). https://doi.org/10.1023/A:1024056617029

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  • DOI: https://doi.org/10.1023/A:1024056617029

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