Nilchi, AbdolrezaJanitabar-Darzi, SiminRasouli-Garmarodi, Somayeh2020-03-112020-03-1120112153-117Xhttps://doi.org/10.4236/msa.2011.25064https://cutt.ly/ntaD09HMSA Google ScholarA new anatase/SiO2 nanocomposite was synthesized by sol-gel method at room temperature using titanium tetrachloride and tetraethylorthosilicate as raw materials. Characterization of the product was carried out by means of X-ray diffraction (XRD), X-ray fluorescence spectroscopy (XRF), transmission electron microscopy (TEM), Brunauer-Emmett-Teller (BET) specific surface areas, Thermogravimetry analysis (TGA), Fourier transform infrared (FT-IR), and UV-vis absorption spectroscopy. Thermal phase transformation studies of composite were carried out up to 1100°C which showed the establishment of anatase TiO2 phase. The presence of some tetrahedral coordination of TiO2 species in SiO2 matrix was confirmed by UV-Vis study. The produced TiO2/SiO2 nanocomposite has good photocatalytic properties due to its anatase phase, existence of tetrahedral coordination of TiO2 in the SiO2 matrix and very large surface area. Furthermore, the synthesized anatase/SiO2 shows significant adsorption ability towards Congo Red (CR) azo dye in comparison with the pure commercial TiO2 which is known as Degussa, P25.enNanocompositesSol-Gel PreparationPhotocatalystCongo RedArticlehttps://doi.org/10.4236/msa.2011.25064