Metal Doping Tio < Sub > 2 < / Sub > Column Brace Montmorillonite Catalytic Degradation Of Acid Orange Light

TiO2photocatalyst which is with efficient, energy-saving, strong oxidation ability is widely researched. However, there are such problems as low visible light utilization and quantum efficiency, catalyst loss and difficult recovery in TiO2’s use limit it’s application. For these problems in the photocatalysis application areas. This paper loaded TiO2on montmorillonite, prepared Zn doped TiO2photocatalyst pillared montmorillonite and explored their photo-catalytic. The effect of different factors and synergetic effect on the degradation of acid orange were studied and the mechanism of coordination effect of HNO3and Zn-TiO2-MMT was discussedIn this research TiO2photocatalyst were prepared by precipitation, hydrolysis and sol-gel method using and the photocatalytic activity was reserched by the decolorization rate of Acid Orange. TiO2photocatalyst prepared by the sol-gel method whit the strongest photocatalytie activity, after react65min, decolorization rate of Acid Orange reached86.4%, respectively,15.7%and29.7%higher than the precipitation and hydrolysis. The photocatalysts were analyzed by UV-Vis, the results show that absorb the ultraviolet is stronger and its absorption limit to move to the visible region by the catalyst prepared by the sol-gel method.Select the sol-gel method to prepare zinc, cerium doped titania pillared montmorillonite, using tetrabutyl titanate as precursor, ethylic acid as inhibitor and montmorillonite as matrix. Investigated the effect of the amount of metal ion doped, calcination temperature, and using XRD, SEM, UV-Vis, FT-IR characterization means to analyze and study the microscopic structure of the catalyst.In this research,investigated the effect of different factors on the degradation of acid orange such as the amount of Zn2+(Ce3+) doped, ratio of Ti to clay, calcination temperature, the pH of acid orange,ect.The result show that Studies indicated that Zinc or Cerium doping titanium TiO2pillared montmorillonite had highest catalytic activity when the amount of Zn2+(Ce3+) doped is0.5%, Ti to clay ratio is15mmol/g, calcination temperature is500℃.The technological conditions of degrade Acid Orange Ⅱ dye wastewater by Zn-doped titania pillared montmorillonite photocatalytic is the pH of Acid Orange Ⅱ is3, catalyst dosage is0.8g/L (Acid Orange Ⅱ concentration of20mg/L). Zn-doped titania pillared montmorillonite catalyst hold the high photocatalytic activity after reused six times,and the acidic orange degradation rate is still as high as89.3%after react75min.The technological conditions of degrade Acid Orange II dye wastewater by Ce-doped titania pillared montmorillonite photocatalytic is the pH of Acid Orange Ⅱ is2and9, catalyst dosage is1.2g/L (Acid Orange II concentration of20mg/L). The catalyst also has a strong photocatalytic activity after reused six times.In this paper, the photocatalytic activity of HNO3was investigated by the degradation rate of Acid Orange.The result show that acidic orange color removal rate reached93.7%after reaction75min. The degradation of acid orange wastewater with Zn(Ce)-TiO2-MMT and HNO3was investigated under ultraviolet irradiation. The effect of different factors and synergetic effect on the degradation of acid orange were studied and the mechanism of coordination effect of HNO3and Zn(Ce)-TiO2-MMT was discussed. The results showed that under the irradiation of ultraviolet light, HNO3and Zn-TiO2-MMT indeed has had the obvious synergy. For500mL solution with the acid orange initial concentration of20mg/L, the decoloration rate of the acid orange was up to96.3%after react45min under the optimal reaction conditions which, i.e. the pH value of the solution adjusted to3by2mol/L HNO3, Zn-TiO2-MMT mass of0.8g/L.