Study On The Degradation Of Rhodamine B With TiO₂ Doped With Sulphuric Acid And Metallic Oxide

Dye has a huge market demand,which makes the dye wastewater emissions increase.Dye wastewater is strong biological toxicity and its high content of organic matter and other features make dyes wastewater can not be discharged directly,to protect the environment,reduce environmental hazards,dye wastewater during treatment before being discharged into the environment after reaching emission standards.Dye wastewater containing a variety of organic compounds,the general approach can not purify wastewater.Based on the mechanism of photocatalytic oxidation.By co-crystallization method efficient photocatalytic degradation of dye wastewater,protecting the ecological environment system.The Second chapterin this paper,based on titanium dioxide,the use of liquid-phase crystallization method of co-doped with other metal elements through its surface oxide doped,to obtain a high catalytic activity of a modified catalyst which enables electron hole surface synergistic effective separation occurs,reducing the electron-hole pair recombination rate,thereby increasing their catalytic activity.We have to analyze the diffraction peak intensity and information about their respective crystal phases by XRD;SEM to obtain a catalyst by physical characteristics:to determine its performance by degrading the test:The test to detect the ultraviolet light absorption range;and through repeated tests to determine the number of reusable.The third chapter in this paper we doped a variety of metal oxides,acidification,many kinds of metal oxides,add template method for modification of TiO₂ photocatalyst to extension of TiO₂ photocatalyst can absorption spectral range and improve the photocatalytic activity of TiO₂ photocatalyst.Using XRD,UV and other samples were characterized.The results showed that the TiO₂ prepared by hydrothermal method had a complex and varied spatial structure,which significantly improved the catalytic activity of TiO₂.Doping and sulfuric acid treatment of nano TiO₂ significantly extends the sample absorption wavelength range,the degradation rate of Rhodamine B,up to a maximum of 87%,add template to prepare a sample degradation is the fastest,the degradation rate as high as 90 percent.