Abstract
It is shown that the addition of precursor, tetrakis(2-hydroxyethyl) orthosilicate, that is absolutely soluble in water to a solution of cyclodextrins (CDs) leads to the formation of a hydrogel as a result of sol-gel processes. The synthesis is performed with neither a catalyst nor heating under the conditions that are inapplicable for traditionally employed precursors (tetraethoxy- and tetramethoxysilanes). The occurrence of sol-gel processes is due to the catalytic action of CDs. At the same time, their molecules act as matrix for precipitating polysilicic acids. As a result of hydrogel calcination, xerogels were prepared with micropores and microparticles dimensions of which were determined by the sizes of CD molecules.
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Translated from Kolloidnyi Zhurnal, Vol. 67, No. 3, 2005, pp. 421–425.
Original Russian Text Copyright © 2005 by Shchipunov, Krekoten’, Kuryavyi, Topchieva.
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Shchipunov, Y.A., Krekoten’, A.V., Kuryavyi, V.G. et al. Microporous Nanocomposite Material Synthesized by Sol-Gel Processing in the Presence of Cyclodextrins. Colloid J 67, 380–384 (2005). https://doi.org/10.1007/s10595-005-0108-2
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DOI: https://doi.org/10.1007/s10595-005-0108-2