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Hydrothermal synthesis of well-dispersed TiO2 nano-crystals

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Abstract

Well-dispersed anatase and rutile nano-particles were prepared via hydrothermal treatment of tetrabutylammonium hydroxide-peptized and HNO3-peptized sols at 240 °C. A broad particle size distribution of anatase crystals was observed in the nonpeptized TiO2 species hydrothermally treated at 240 °C. X-ray diffraction and transmission electron microscopy, as well as zeta potential measurement, were used to characterize the particles. The formation of the well-dispersed anatase and rutile particles from the peptized samples could be attributed to (i) homogeneous distribution of the component in the peptized sols, and (ii) the high long-range electrostatic forces between particles in the presence of both peptizers, which were not present in the nonpeptized samples. This work provided a new way to prepare nano-crystals of titania.

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Authors and Affiliations

  1. Department of Ceramic and Glass Engineering, CICECO, University of Aveiro, Aveiro, 3810-193, Portugal

    Juan Yang, Sen Mei & José M. F. Ferreira

Authors
  1. Juan Yang
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  2. Sen Mei
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  3. José M. F. Ferreira
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Yang, J., Mei, S. & Ferreira, J.M.F. Hydrothermal synthesis of well-dispersed TiO2 nano-crystals. Journal of Materials Research 17, 2197–2200 (2002). https://doi.org/10.1557/JMR.2002.0323

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  • DOI: https://doi.org/10.1557/JMR.2002.0323

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