Sedimentation Properties of TiO2 Nanoparticles in Organic Solvents

Abstract:

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In this study, the colloidal stability and sedimentation behavior of crystalline TiO2 particles (∼300nm) in various organic solvents have been investigated by means of a backscattered light flux profile (Turbiscan) and a zeta potential measurement. The backscattered light flux profiles revealed that the TiO2 nanoparticles were readily sedimented in water, methyl alcohol, and ethyl alcohol due to a flocculation-induced particle growth, while a particle coalescence and a sedimentation of the TiO2 nanoparticles were hardly observed in isopropyl alcohol. The measured ζ potentials verified the differences of the colloidal stabilities of the TiO2 particles in the organic solvents, showing a good correlation with the migration velocity.

Info:

Periodical:

Solid State Phenomena (Volume 119)

Edited by:

Chang Kyu Rhee

Pages:

267-270

DOI:

10.4028/www.scientific.net/SSP.119.267

Citation:

S.H. Woo et al., "Sedimentation Properties of TiO2 Nanoparticles in Organic Solvents", Solid State Phenomena, Vol. 119, pp. 267-270, 2007

Online since:

January 2007

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Price:

$35.00

[1] A. Fujishima, K. Honda, Nature, Vol 238, p.37, (1972).

[2] M. R. Hoffmann, S. T. Martin, W. Choi, D. W. Bahnemann, Chem. Rev., Vol 95, p.69, (1995).

[3] A. C. van Dyk, A. M. Heyns: J. Colloids Interf. Sci., Vol. 206, p.381, (1998).

[4] S. J. Kim, S. D. Park, Y. H. Jeong, and S. Park, J. Am. Ceram. Soc., Vol 82, p.927, (1999).

[5] D. J. Shaw: Introduction to Colloid and Surface Chemistry, Butterworth, London, p.157, (1997).

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