علی ایزدبخش

To assess the ability of TiO2 in the destruction of phenol, the test conditions were selected first. The two lamps, first with UV radiation and another one with visible radiation was used and for each experiment, the desired concentration of phenol in water was prepared. Also the synthesized photocatalyst were used in powder form and to spread them in a solution the magnetic stirrer was used. The wavelength of lights measured by a spectrometer.For the synthesis of TiO2, first the structure of the photocatalyst was modified by three surfactants Pluronic P-123, Pluronic F-127 and CTAB. XRD tests were taken from each of the three photo catalyst and it was found that all three catalysts are in anatase phase and have crystals of 10-15 nm. After testing the photo catalysts with UV light, it was found that TiO2 synthesized by P-123 by 64.41 ± 3.93% phenol destruction under the test condition was the best choice. In the second part TiO2 mesopore was synthesized. XRD, UV-Vis DRS and nitrogen absorption and desorption tests were taken from this photocatalyst. From XRD test it was found that the catalystis synthesized in the anatase phase. Also from BET equation the surface area of mesopore catalyst M-TiO2 was obtained 107.2851 ±4.7641 m2/g and from BJH method in nitrogen absorption and desorption it was found that the catalyst has an average pore diameter of 13.55 nm and has a uniform pore size. The catalyst was used in the experiment of phenol destruction by UV light and it was found that the ability of the photocatalyst in destruction of phenol in water is 44.91 ± 6.32%. In the third part SBA-15 was used, in the first method,SBA-15 was synthetized and then TiO2 were deposited in its structure and the photocatalyst was named TiO2/SBA-15. In the second methodthrough synthesis of SBA-15, Ti source was added and the synthesized photocatalyst named Ti-SBA-15.Nitrogen adsorption and desorption test for Ti-SBA-15 showed that the photocatalys has a surface area of 848.0621 ± 4.8314