Abstract
Nanoscale composite materials based on the SiO2–TiO2 system were prepared in the form of co-precipitated composites and core SiO2–shell TiO2 composites, with specific surface area 150–650 m2/g and sorption volumes 0.1–1.0 cm3/g. It is shown that variation of phase composition and morphology permits to change their structural-adsorption properties and nanocrystallites size after thermal treatment. It is discovered that co-precipitated composite materials differ from core SiO2–shell TiO2 composites by a component interaction degree. It determines the difference of the titan-containing component crystallization process and alteration of their structural-absorption properties after thermal treatment. The results of the tests of composites as photocatalysts for Rhodamine B decomposition reaction, as catalysts of Hantzsch and Biginelli reaction, and as fillers in electrorheological fluids are shown.
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The authors are grateful to the Belarusian Republican Foundation for Fundamental Research for financial support (grants X10P-027, X12P-071).
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Murashkevich, A.N., Alisienok, O.A., Zharskiy, I.M. et al. Nanoscale composite materials in the system SiO2–TiO2 . J Sol-Gel Sci Technol 65, 367–373 (2013). https://doi.org/10.1007/s10971-012-2947-8
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DOI: https://doi.org/10.1007/s10971-012-2947-8