The Preparation Of New Titanium Dioxide And The Performance Of Photocatalytic Degradation Phenol

Titanium dioxide (TiO2) light catalysts possess high stability, non-toxic, and it could photocatalytic degradation organic compounds at room temperature, so it have extensive application prospect and the research value in sewage treatment. But, the stable sharp over-mining TiO2 only can be degraded by the wavelength of ultraviolet light 387.5 nm and reunion, precipitation and losses could happen to TiO2 when dealing with liquid that the pollutants in prone to, and severely limits the large-scale application of TiO2. To improve and change the preparation methods of TiO2 and load fixed it, is an efficient way to increase its spectrum use scope and eliminate the deficiency of the liquid treatment.This paper used microwave to produce ionic liquids hydrophobic [Bmim]PF6, use the ionic liquids dosing produce TiO2 colloid, and produce a new kind of micron-grade TiO2 light catalysts through the preparation of the dry and burning subsequent handling. The SEM and XRD can be used to analyze the New TiO2 morphology structure and crystalling phase structure. And in ionic liquids dosing based on the principle of metal ions doped preparation of TiO2 and use doping type of artificial zeolite and clay bricks as new TiO2 load carrier to produce TiO2, determined and analyzed hotocatalytic degradation performance and use of spectrum scope through the organic pollutants pheno experiment from the above three types of TiO2 degradationResults indicated that, the TiO2,which produced form the ionic liquids dosing and in subsequent calcination process devastates in 500℃temperature control in the preparation particle,its distribution is of arranged evently, and has certain specific surface area, it will benefit pollutants to degrade and absorb. Its main crystal is constitute mostly by the anatase type and a small rutile type over-mining crystal.When the calcination temperature reached to 600℃, TiO2 shapes from the anatase type crystal to the sharp over-mining relatively stable transition, forms a more perfect particle distribution system which constitute of a large sharp over-mining of crystal shape and small amounts of anatase type with greater specific surface area and, and formed the crystal shape structure with sharp over-mining type as the main body, rutile type as the unique degradation system defect fill that has improved photocatalytic degradation performance of the new TiO2. Using five kinds of common metal ions:Pb2+, Cu2+, Fe3+, Ni2+, Zn2+, to modified the TiO2 which was the degradation of TiO2 doping type better performance than that without Pb2+ TiO2 and doping type of degradation of doping modification the degradation of organic pollutants phenol best effect. The preparation of TiO2 load type and degradation and reuse of experiments prove that its can effectively resolve TiO2 in liquid phase processing loss and difficult to fixed issues, and load carrier TiO2 powders with new synergistic effects improved the catalytic degradation performance...