Abstract: In this study, the photocatalytic properties of titanium dioxide / zinc oxide nanoparticles were investigated using the method of combustion gel synthesis. Then another solution of ethanol and zinc nitrate was prepared and added dropwise to the first stirring solution. After homogenization, the solution was heated to a uniform gel temperature of 150 ° C and the resulting gel was heated in an oven with The temperature was set at 280 ° C for combustion and the final material was formed. After synthesis, the samples were calcined at 480 ° C for 90 minutes to improve the bonds and remove organic matter. Four samples with different percentages of titanium dioxide and zinc oxide phases were prepared. Structural, optical and photocatalytic properties of nanoparticles prepared using X-ray diffraction (XRD) tests, infrared spectroscopy (FTIR), scanning electron microscopy images Field (FESEM) tests were performed to eva‎luate the photocatalytic properties of PL and UV-vis. The test results show a decrease in the photocatalytic activity of titanium dioxide combined with zinc oxide. Increasing the percentage of oxidation changed the appearance of the samples. The results of XRD test showed wider peak sizes for the sample synthesized with citric acid fuel, which indicates that the size of the sample crystals is smaller. The results of FESEM analysis reported particle size in the range of 11 to 21 nm and also the effect of increasing the percentage of ZnO on particle size can be seen in this analysis. As the percentage of ZnO increases, we see larger particle sizes.

مهدي رفيعائي

نرگس جوهري