In this paper, we have investigated the properties of a composite SiO 2 −TiO 2 /TiO 2 nanoparticle system. Hybrid films have been prepared using a sol−gel process, starting from tetraisopropoxy titanate and 3-glycidoxipropyltrimethoxysilane as precursors and performing the synthesis at room temperature. The spin-coated films have been thoroughly characterized with UV−vis and FT-IR spectroscopies, TEM analysis, profilometry, and ellipsometry to evaluate their physical and structural properties. Particular attention has been devoted to the study of their photocatalytic action.
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Gardin et al. (2010) studied this question.