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Dispersion Stability of TiO2 Powder Synthesized by Homogeneous Precipitation Process at Low Temperatures

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Abstract:

Crystalline TiO2 particles with a diameter of 300nm were obtained from aqueous TiOCl2 solution with 0.67M Ti4+ concentration, diluted by TiCl4 solution using the homogeneous spontaneous precipitation process. Dispersion stability of rutile TiO2 powder with acicular typed primary particles has been investigated in both aqueous and organic media. In this paper, we focus on the TiO2 suspension stability in aqueous and organic media using a recently developed optical analyzer(Turbiscan) and Zeta potential analyzer. The surface potentials of TiO2 particles were greatly modified by dispersion medium and valance of the ionic species, which governs the colloidal behavior of TiO2 particles virtually.

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Periodical:

Materials Science Forum (Volumes 510-511)

Pages:

46-49

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.510-511.46

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Online since:

March 2006

Authors:

S.H. Woo, Wheung Whoe Kim, Chang Kyu Rhee

Keywords:

Dispersion Stability, Titania (TiO2), turbiscan, Zeta-Potential

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© 2006 Trans Tech Publications Ltd. All Rights Reserved

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