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Hydrothermal soft chemical synthesis of BaTiO3 and titanium oxide with cocoon-like particle morphology

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Abstract

The hydrothermal reactions of fibrous H2Ti4O9 particles with Ba(OH)2 solution in the presence of cationic surfactants of n-hexadecyltrimethylammonium hydroxide (HTMA-OH) and n-hexadecyltrimethylammonium bromide (HTMA-Br) were investigated in a temperature range of 150–250 °C. H2Ti4O9 phase with layered structure was transformed to BaTiO3 phase in the Ba(OH)2–(HTMA-OH) and the Ba(OH)2–(HTMA-Br) solutions, and partially transformed to anatase phase in the Ba2+-free HTMA-OH and HTMA-Br solutions by topotactic structural transformation reactions under the hydrothermal conditions. The cocoon-like BaTiO3 and titanium oxide particles were obtained after the hydrothermal reactions in the Ba(OH)2–(HTMA-OH) and HTMA-OH solution, respectively. These cocoon-like particles were formed by assembling the fibrous particles in the surfactant solutions.

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Acknowledgement

This work was supported in part by Grants-in-Aid for Scientific Research (C) (No.13650894) from Japan Society for the Promotion of Science and the Murata Science Foundation.

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Authors and Affiliations

  1. Department of Advanced Materials Science, Faculty of Engineering, Kagawa University, 2217-20, Hayashi, Takamatsu, 761-0396, Japan

    Qi Feng

  2. Research Laboratory of Hydrothermal Chemistry, Faculty of Science, Kochi University, 2-5-1 Akebono, Kochi, 780-8520, Japan

    M. Hirasawa, K. Kajiyoshi & K. Yanagisawa

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  1. Qi Feng
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  2. M. Hirasawa
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  3. K. Kajiyoshi
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  4. K. Yanagisawa
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Correspondence to Qi Feng.

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Feng, Q., Hirasawa, M., Kajiyoshi, K. et al. Hydrothermal soft chemical synthesis of BaTiO3 and titanium oxide with cocoon-like particle morphology. J Mater Sci 42, 640–645 (2007). https://doi.org/10.1007/s10853-006-1142-0

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  • DOI: https://doi.org/10.1007/s10853-006-1142-0

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