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Sol–gel synthesis of Ta2O5–SiO2 composites from tantalum(V) chloride and tetraethyl orthosilicate in ethanol

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Abstract

Ta2O5–SiO2 composites containing 10, 50, and 90 wt % SiO2 have been prepared by a sol–gel process in ethanolic solutions of tantalum(V) chloride with tetraethyl orthosilicate. The physicochemical aspects of their formation have been studied by IR spectroscopy, X-ray diffraction, X-ray microanalysis, and thermal analysis in combination with mass spectrometry. The results demonstrate that the SiO2 content of the Ta2O5–SiO2 composites influences the uniformity of the tantalum and oxygen distributions on the surface of the materials and that heat-treatment conditions influence their crystallinity.

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Authors and Affiliations

  1. National Research Tomsk Polytechnic State University, pr. Lenina 30, Tomsk, 634050, Russia

    A. G. Mal’chik, S. O. Kryuchkova & V. V. Kozik

  2. National Research Tomsk State University, pr. Lenina 36, Tomsk, 634050, Russia

    S. A. Kuznetsova & V. V. Kozik

Authors
  1. A. G. Mal’chik
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  2. S. A. Kuznetsova
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  3. S. O. Kryuchkova
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  4. V. V. Kozik
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Correspondence to S. A. Kuznetsova.

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Original Russian Text © A.G. Mal’chik, S.A. Kuznetsova, S.O. Kryuchkova, V.V. Kozik, 2017, published in Neorganicheskie Materialy, 2017, Vol. 53, No. 9, pp. 1016–1025.

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Mal’chik, A.G., Kuznetsova, S.A., Kryuchkova, S.O. et al. Sol–gel synthesis of Ta2O5–SiO2 composites from tantalum(V) chloride and tetraethyl orthosilicate in ethanol. Inorg Mater 53, 994–1003 (2017). https://doi.org/10.1134/S0020168517090126

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  • DOI: https://doi.org/10.1134/S0020168517090126

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