Abstract
The effect of pH of a dispersed medium and electrolytes on the aggregative stability of yttrium oxohydroxide hydrosol obtained by the peptization method is studied. It is found that the sol under study is stable to coagulation in a narrow range of pH values, from 6.9 to 8.2. Upon introduction of nitrate and sulfate ions, hydrosol coagulation proceeds by different mechanisms. In the presence of sodium sulfate, irreversible coagulation of the sol takes place. It is shown that stability of the yttrium oxohydroxide hydrosol to coagulation is determined not only by the electrostatic factor but also by the availability of strongly hydrated gel layers on particles.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Yagi, H., Bisson, J.F., Ueda, K., and Yanagitani, T., Y3Al5O12 Ceramic Absorbers for the Suppression of Parasitic Oscillation in High-Power Nd:YAG Lasers, J. Lumin., 2006, vol. 121, no. 1, pp. 88–94.
Marsh, P.J., Silver, J., Vecht, A., and Newport, A., Cathodoluminescence Studies of Yttrium Silicate: Cerium Phosphors Synthesized by a Sol-Gel Process J. Lumin., 2002, vol. 97, nos. 3–4, pp. 229–236.
Shabanova, N.A. and Sarkisov, P.D., Osnovy sol’-gel’-tekhnologii nanodispersnogo kremnezema (Bases of Sol-Gel-Processing of Nanodispersed Earth Silicon), Moscow: Akademkniga, 2004.
Nazarov, V.V. and Pavlova-Verevkina, O.B., Synthesis and Colloid-Chemical Properties of Boehmite Hydrosols, Kolloidn. Zh., 1998, vol. 60, no. 6, pp. 797–807 [Colloid. J. (Engl. Transl.), vol. 60, no. 6, p. 738].
Grishchenko, L.I., Medvedkova, N.G., Nazarov, V.V., and Frolov, Yu.G., Synthesis and Properties of Zirconium Dioxide Hydrosol Obtained by Hydrolysis of its Oxychloride, Kolloidn. Zh., 1993, vol. 55, no. 1, pp. 30–34.
Minyaeva, O.A., The Structure and Some Properties of Gel-Like Yttrium and Gadolinium Hydrated Oxides, Kolloidn. Zh., 2001, vol. 63, no. 4, pp. 476–481 [Colloid. J. (Engl. Transl.), vol. 63, no. 4, p. 431].
Avdin, V.V., Sukharev, Yu.I., Lymar’, A.A. et al., Specific Features of Structure Formation of Zirconium, Lanthanum, and Yttrium Oxyhydrates, Izv. Chelyabinck. Nauchn. Tsentra, 2005, issue 3, no. 29, pp. 85–89.
Sukharev, Yu.I. and Lepp, Ya.N., On Sorption Characteristics of Oxohydrates of Some Rare-Earth Elements, Neorg. Mater., 1995, vol. 31, no. 12, pp. 1562–1566.
Dibtseva, N.M., Kienskaya, K.I., and Nazarov, V.V., Synthesis and Some Properties of Sols Prepared by Hydrolysis of Lanthanum Nitrate, Kolloidn. Zh., 2001, vol. 63, no. 2, pp. 169–172 [Colloid. J. (Engl. Transl.), vol. 63, no. 2, p. 150].
Medvedkova, N.G., Grishchenko, L.I., Gorokhova, E.V. et al., Rheological Properties and Hydrophilic Behavior of Sols, Kolloidn. Zn., 1994, vol. 56, no. 6 pp. 813–816.
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © I.A. Belova, K.I. Kienskaya, A.B. Yanchilin, 2009, published in Neorganicheskie Materialy, 2009, Vol. 45, No. 3, pp. 292–295.
Rights and permissions
About this article
Cite this article
Belova, I.A., Kienskaya, K.I. & Yanchilin, A.B. Influence of various factors of a dispersed medium on stability of the hydrosol YOOH. Inorg Mater 45, 250–253 (2009). https://doi.org/10.1134/S0020168509030054
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S0020168509030054