Inorganic Materials

, Volume 45, Issue 10, pp 1146-1152

First online:

Fabrication and properties of SiO2/TiO2 composites

  • A. N. MurashkevichAffiliated withBelarussian State Technological University Email author 
  • , A. S. LavitskayaAffiliated withBelarussian State Technological University
  • , O. A. AlisienokAffiliated withBelarussian State Technological University
  • , I. M. ZharskiiAffiliated withBelarussian State Technological University

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Composites in the form of precipitated powders, hybrid xerogels, and SiO2 core/TiO2 shell particles have been produced via hydrolysis of precursors (alkoxides and inorganic derivatives of titanium and silicon) and have been characterized by differential thermal analysis, X-ray diffraction, adsorption measurements, and macroelectrophoresis. The results demonstrate that heat treatment of the composites leads to crystallization of the titanium-containing component and, accordingly, reduces their specific surface area. Hydrothermal treatment enables the fabrication of materials in which TiO2 nanocrystals are evenly distributed over an amorphous SiO2 matrix.