چكيده به لاتين
In recent years, environmental pollution on a global scale and a lack of clean energy resources have focused scientists' attention on environmental issues. One way to combat environmental pollution is to decompose toxic and harmful molecules and turn them into non-toxic substances by photocatalytic processes that ZnV2O6 due to chemical stability and high potential, cheapness and environmental compatibility. Biology has attracted attention as a photocatalytic material. In this study, ZnV2O6 and the composite sample ZnV2O6_TiO2 were synthesized by solution combustion synthesis using fuels such as citric acid and glycine with different amounts of molybdenum. Synthesized powders using X-ray diffraction (XRD), field electron scanning electron microscopy (FESEM), Diffuse reflectance spectra (DRS), FTIR infrared spectrometry (FTIR) spectroscopy, photoluminescence spectroscopy (PL), Brunauer emmett teller (BET) and visible-ultraviolet (UV-Visible) spectroscopy were analyzed, and Simultaneous thermal analysis (STA) was performed on their gels. The combination and different molecular values of the fuel were used to change the combustion conditions, including temperature, amount and composition of the combustion gas. The results showed that the superiority of photocatalytic performance, high purity, excellent porosity observed in SEM images and better energy gap compared to other samples, the sample contained 15 mmol citric acid among ZnV2O6 substances and composite sample 0.1 g ZnV2O6 and 0.1 g TiO2 among ZnV2O6_TiO2 composite materials had more photocatalytic activity in pigment degradation, better energy gap than other samples, significant porosity in SEM images as well as high purity. Examination of the photocatalytic activity of the synthesized powders showed good results, so that in the sample containing 15 mmol citric acid in ZnV2O6 samples, 73% of methylene blue destruction at pH equal to 9 and in the composite sample 0.1 g ZnV2O6 and 0.1 g Among the ZnV2O6_TiO2 composite TiO2, 91% methylene blue degradation was observed at pH 9. The study of other pigments also took place at different pHs, and it was observed that in all pHs equal to 2, there was only adsorption.
