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Room temperature synthesis of crystalline metal oxides

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Abstract

Crystalline titanium dioxide powders have been synthesized as either rutile or anatase from aqueous solutions at low temperatures (T≤100°C) and atmospheric pressure. First, a sol is prepared by the hydrolysis of a titanium alkoxide in an acidic solution. The sol is subsequently heated at different rates to produce the different crystalline phases of titanium dioxide. Powder characterization was carried out using X-ray diffraction, scanning electron microscopy and high resolution transmission electron microscopy. In general, the precipitate size was observed to be between 50 and 100 nm. Possible mechanisms involved in determining the crystal variants are discussed.

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Authors and Affiliations

  1. Lawrence Berkeley National Laboratory, Center for Advanced Materials, Berkeley, CA 94720, USA

    M Gopal, W. J Moberly Chan & L. C De Jonghe

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  1. M Gopal
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  2. W. J Moberly Chan
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  3. L. C De Jonghe
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Gopal, M., Moberly Chan, W.J. & De Jonghe, L.C. Room temperature synthesis of crystalline metal oxides. Journal of Materials Science 32, 6001–6008 (1997). https://doi.org/10.1023/A:1018671212890

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