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

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

    Research output: Contribution to journalArticlepeer-review

    4 Citations (Scopus)


    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.

    Original languageEnglish
    Pages (from-to)994-1003
    Number of pages10
    JournalInorganic Materials
    Issue number9
    Publication statusPublished - 1 Sep 2017


    • silicon oxide
    • sol–gel synthesis
    • TaO–SiO composites
    • tantalum(V) oxide

    ASJC Scopus subject areas

    • Chemical Engineering(all)
    • Metals and Alloys
    • Inorganic Chemistry
    • Materials Chemistry

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