The Preparation And Application Of Titanium Dioxide Photo-catalyst Co-doped With Fe, S And Ce

TiO₂is widely used in air purification, sewage treatment, sterilization and other newfunctional materials with its biological and chemical inertness,stable structure, low price,non-toxic, strong oxidizing and other advantages,and is added to toothpaste,skincream,pigment. Especially in the recent years, as an n-type semiconductor oxide, TiO₂attained outstanging achievement in organic wastewater, toxic, bio-biodegradable pollutants,which is a hot topic in the current environmental governance research.In this article, tetrabutyl titanate and ethanol are the precursor and Fe, S and Ce aredoping elements.Degradation of Fe, S and Ce co-doped Miscellaneous TiO₂photocatalyst ofvarious dyes were prepared by sol-gel method.By dong Alizarin Red solution photocatalyticdegradation research to make clear the effect of preparation conditions on the co-doped TiO₂catalyst activity. The results showed that, in the450°C, calcined2h, Fe, S and Ce and Tiatomic ratio of the resultant catalyst is0.01:1:0.1:100maximum activity and alizarin red dyedegradation rate of94%.Skeleton structure and sizeof doped TiO₂, which is analysised by XRD,SEM and FT-IR,the results showed that: Fe, S and Ce ternary Codoped the catalytic activity of TiO₂isconnected with temperature, time and its composition. Fe, S and Ce-doped suppressedpolymorph changes and photoinduced electron-hole pairs of the composite to improve thequantum efficiency, thereby enhancing the response range of doped TiO₂photocatalyticactivity and redshift of light.Co-doped TiO₂catalyst activity was studied by different preparation methods. Fe, S andCe-doped TiO₂catalyst is prepared by Precipitation. Likely by dong Alizarin Red solutionphotocatalytic degradation research to make clear the effect of preparation conditions on theco-doped TiO₂catalyst activity. The results showed that, in the500°C, when Fe, S and Ceatomic ratio of1:10:4, calcined2h, ultrasonic15min, immersed for8hours, the photocatalystactivity, degradation rate reached80%.Finally, a comparative study with co-doped TiO₂in different kinds of dyes and throughthe degradation of the different structures of the dye （anthraquinone class: Acid Blue BRL;Alizarin Red; the azo class: methyl orange; Acid Scarlet GR）.are showed that: Co-doped TiO₂light catalyst had some effects of degradation on the above dyes and has good effect on thedegradation of acid blue. At the same time, catalyst has certain red shift phenomenon.