Antipollution And Antibacterial Dope Of Titania

We are attention to both of the antibacterial and antipollution property of material, because people persist in searching the healthy living environment and struggle in preventing the hydrophily biology that harm to marine and other establishments. Titania is a photocatalysis material, which has several application in catalysis. We can use and research these characters of titania , in this paper, we are fixing the technology of photocatalysis and review based on the brief introduction of the degradation mechanisms of semiconductor photocatalysts; the recent developments in the preparation of the photocatalytical titania nanoparticles according to solid, gas and liquid, such as hydrothermal methods, oxidation methods, sol-gel methods, precipitation process at low temperatures, liquid phase deposition, and so on; technichques relating to modification of TiO₂ based photocatalysts in recent years such as metal cation doping, noble metal aggradation, oxide composite et al. We make suggestions about the photocatalysis research direction and preparation methods in the near future based on myself knowledge of titania.In this paper, we used the hydrolyze deposition method at low temperatures to prepare titania,used AgNO₃ deposit and SiO₂ pack relating to modification of TiO₂. The methods of X radial diffraction(XRD), infrared spectrum(IR),scanning electronic spectrum(SEM), granularity analysis and so on are used to test the solid crystal and configuration, the photocatalysis is based on the UV1601 spectrum instrument decomposing methyl orange. Epoxy rosin is used as base material and then append different titania solid to it which is testing contact angle and their antibacterial property.According to the research, as the adding of AgNO₃ deposit,the titania granularity will drop and crystal particulate will diminish ,but their anatase crystal and granularity will increase,it has the best photocatalysis character at 3% deposition; the using of SiO₂ will improve the calcine temperature to higher than normal, and the production will change from anatase crystal to unformed titania,there is Ti-O-Si bond when the SiO₂ achieve to 8%,it will have several effect to the increasing of photocatalysis property, at 4% packing it has the best photocatalysis character for the granularity especially aggrandizing.In the system of epoxy rosin,the deposition will disperse better than the packing. Among the different materials, we know the samples which the granularity is small and uniformity is good will easily disperse in the epoxy rosin from the pictures of SEM. It won't be antipollution according to the contact angle results, because the increasing of SiO₂ will make the contact angle drop. We know the rosin will has well antibacterial character for the result of antibacterial test attained zero grade.