DISPERSIBILITY AND MORPHOLOGY OF TITANIUM DIOXIDE HYDROSOLS
Abstract
Hydrous titanium dioxide has been obtained by hydrolysis of titanium tetrachloride in aqueous solution both with and without alcohol. Method of atomic force microscopy has been used in order to investigate morphology of air dried samples of hydrous titanium dioxide. The paper shows formation of conglomerates in case of hydrolysis without addition of isobutyl alcohol. According to turbidimetric data particle radius of hydrosol has varied in the suspension within the range of (135 ± 5) nm that is in good correlation with atomic force microscopy data.
About the Authors
L. M. SlepnevaBelarus
T. A. Kouznetsova
Belarus
O. F. Kraetskaya
Belarus
References
1. TiO2 photocatalitic oxidation: I. Photocatalysts for Liquid-Phase Processes and Photocatalitic Degradation of Chemical Warfare Agent Simulants in a Liquid Phase / A. V. Vorontsov [et al.] // Kinet. Catal. A. – 2005. – Vol. 46, No 2. – P. 189–203.
2. Kato, S. Koguo Kagaru Zasshi / S. Kato, F. Masuo. – 1964. – Vol. 67. – p. 42 (цит. по: Ohtani B. Preparing Articles on Photocatalysis Beyond the Illusions, Misconceptions, and Speculation // Chem. Lett. – 2008. – Vol. 37, No 3. – p. 217–229.
3. McLintoclc, I. S. Reactions on Titanium Dioxide; Photo-Absorption and Oxidation of Ethylene and Propylene / I. S. McLintoclc, M. Ritchie // Trans. Faraday Soc. – 1965. – Vol. 61. – p. 1007–1016.
4. Photocatalytic Layer-by-Layer Coatings for Degradation of Acutely Toxic Agents / K. Krogman [et al.] // Chem. Mater. – 2008. – Vol. 20. – p. 1924–1930.
5. Савинов, Е. Н. Фотокаталитические методы очистки воды и воздуха / Е. Н. Савинов // Соросовский образовательный журнал. – 2000. – Т. 6, № 11.
6. Технология формирования покрытий на основе окислов циркония и титана / под ред. Л. М. Лынькова. – Минск, 2001.
Review
For citations:
Slepneva L.M., Kouznetsova T.A., Kraetskaya O.F. DISPERSIBILITY AND MORPHOLOGY OF TITANIUM DIOXIDE HYDROSOLS. Science & Technique. 2012;(5):67-71. (In Russ.)