Abstract
In order to investigate the growth mechanism of TiO2, the monodispersed TiO2 fine particles were prepared by hydrolysis of Ti(OC2H5)4 using the seed preparation method. Although it was impossible to grow TiO2 particles to more than 1 μm with conventional liquid phase reaction method, we obtained monodispersed T1O2 fine particles of up to 2.5 urn. Nielsen’s chronomal analysis and Overbeek’s theory were applied to clarify the particle growth mechanism. The particle growth mechanism was found out as a first-order polynuclear layer growth mechanism and the growth rate constant, kP was about 6.45X10-6 cm/s.
Similar content being viewed by others
References
Bailey, J. K. and Mecartney, M. L., “Formation of Colloidal Silica Particles from Alkoxides”,Colloids and Surfaces,63, 151 (1992).
Barringer, E. A. and Bowen, H. K., “Formation, Packing, and Sintering of Monodisperse TiO2 Powders”,J. Am. Ceram, Soc.,65(12), C199 (1982).
Barringer, E. A., Jubb, N., Fegley, B., Pober, R. L. and Bowen, H. K., “Ultrastructure Processing of Advanced Ceramics”, Wiely, New York (1984).
Barringer, E. A. and Bowen, H. K., “High-Purity, Monodisperse TiO2 Powders by Hydrolysis of Titanium Tetraethoxide. 1. Synthesis and Physical Properties 2. Aqueous Interfacial Electrochemistry and Dispersion Stability”,Langmuir,1, 414 (1985).
Bogush, G. H. and Zukoski, C. F., “Ultrastructure Processing of Advanced Ceramics”, Wiely, New York, 477, 1988.
Brinker, C. Jeffrey and Scherer, George W., “Sol-Gel Science”, Academic Press, San Diego, 1990.
Byers, C. H. and Harris, M. T., “Ultrastructure Processing of Advanced Ceramics”, Wiely, New York, 843, 1988.
Duonghong, D., Borgarello, E. and Gratzel, M., “Dynamics of Lightfoot-Induced Water Cleavage in Colloidal Systems”,J. Am. Chem. Soc.,103, 4685 (1981).
Edelson, L. H. and Glaeser, A. M., “Role of Particle Substructure in the Sintering of Monosized Titania”,J. Am. Ceram. Soc,71(4), 225 (1988).
Edelson, L. H. and Glaeser, A. M., “Effects of Thermal Pretreatment on Coarsening of Nominally Monodispersed Titania”,J. Am. Ceram. Soc.,71(4), C198 (1988).
Harris, M. T. and Byers, C. H., “Effect of Solvent on the Homogeneous Precipitation of Titania by Titanium Ethoxide Hydrolysis”,J. Non-Cryst. Solids,103, 49 (1988).
Hench, L. L. and West, J. K., “The Sol-Gel Process”,Chem. Rev.,90, 33 (1990).
Jean, J. H. and Ring, T. A., “Nucleation and Growth of Monodisperse TiO2 Powders from Alcohol Solution in the Presence of a Sterically Stabilizing Surfactant”,Proceedings of the British Ceramic Society,38, 11 (1984).
Jean, J. H. and Ring, T. A., “Processing Monosized TiO2 Powders Generated with HPC Dispersant”,Am. Ceram. Soc. Bull.,65(12), 1574 (1986).
Lamer, V. K. and Dinegar, R. H., “Theory, Production and Mechanism of Formation of Monodispersed Hydrosols”,J. Am. Chem. Soc.,72(11), 4847 (1950).
Matijevic, E., Budmik, M. and Meites, L., “Preparation and Mechanism of Formation of Titanium Dioxide Hydrosols of Narrow Size Distribution”,J. Colloids Interface Sci.,61(2), 302 (1977).
Messing, G. L. and Minehan, W. T., “Synthesis of Ceramic Powders from Methyl Alkoxides”,J. Ceram. Soc. Japan,99(10), 1036 (1991).
Mohanty, R., Bhandarkar, S. and Estrin, J., “Kinetics of Nucleation from Aqueous Solution”,AIChE J.,36(10), 1536 (1990).
Moller, H. J. and Welsch, G., “Sintering of Ultrafine Silicon Powder”,J. Am. Ceram. Soc.,68(6), 320 (1985).
Nakanishi, K. and Takamiya, Y., “Growth of Seeded Silica from Si(OEt)4in Ethanol”,J. Ceram. Soc. Japan,96(7), 719 (1988).
Ogihara, T., Mizutani, N. and Kato, M., “Growth Mechanism of Monodispersed ZrO2 Particles”,J. Am. Ceram. Soc.,72(3), 421 (1989).
Okamura, H., Barringer, E. A. and Bowen, H. K., “Preparation and Sintering of Monosized Al2O3-TiO2 Composite Powder”,J. Am. Ceram. Soc.,69(2), C22 (1986).
Overbeek, J. Th. G., “Recent Developments in the Understanding of Colloid Stability”,J. Colloids Interface Sci.,58(2), 408 (1977).
Overbeek, J. Th. G., “Monodisperse Colloidal Systems, Fascinating and Useful”,Adv. Colloids Interface Sci.,15, 251(1982).
Ragai, J. and Lotfi, W., “Effects of Preparative pH and Aging Media on the Crystallographic Transformation of Amorphous TiO2 to Anatase and Rutile”,Colloids and Surface,61, 97 (1991).
Sacks, M. D. and Tseng, T., “Preparation of SiO2 Glass from Model Powder Compacts: I. Formation and Characterization of Powders, Suspensions, and Green Compacts”,J. Am. Ceram. Soc.,67(8), 526 (1984).
Yan, M. F., “Microstructural Control in the Processing of Electronic Ceramics”,Mater. Sci. Eng.,48, 53 (1981).
Yonemoto, T., Takagi, S., Doi, T., Uchida, F. and Tadaki, T., “Kinetics and Mechanism of Formation of Fine Hydrated TiO2 Particles by Hydrolysis of Ti(OC2H5)4”,J. Chem. Eng. Japan,18(6), 887 (1992).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Kim, H.T., Park, H., Bae, S.Y. et al. Growth mechanism of monodispersed TiO2 fine particles by the hydrolysis of Ti(OC2H5)4 . Korean J. Chem. Eng. 12, 516–522 (1995). https://doi.org/10.1007/BF02705853
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF02705853