Abstract
We have investigated the preparation of titanosilicate mesoporous materials from both the self-assembly and the liquid crystal templating mechanisms. A fluorinated surfactant has been used as a template. Different amounts of titanium have been incorporated in the silica matrix. The Ti contents have been estimated by elementary analysis. Samples have been characterized by SAXS; XRD; nitrogen adsorption−desorption; and XPS, SEM, Raman, UV, and IR spectroscopies. SAXS analysis and nitrogen adsorption−desorption have shown that the hexagonal array is lost when the titanium contents increase in the materials. In the meantime, the specific surface area decreases. However, when materials are prepared via the liquid crystal mechanism, the hexagonal structure is preserved for the higher amounts of titanium. As proven by XRD and Raman experiments, whatever the mechanism, anatase is formed. XPS analysis has shown different locations of TiO2 anatase according to the mechanism involved in the synthesis. If materials a...
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