The Study On Preparation And Performance Nano-TiO₂ Hydrosol

In the Copenhagen conference, worrying about the issue of environment and energy has been aroused further. Nanotechnology has been continuously leading the people into new fields of research and solving the problems which the humanity faced. In this paper, a series of nano-TiO2-hydrosol was prepared to use the optical properties of the TiO2. TiO2 is such a versatile semiconductor material with chemical stability and non-toxic harmless to bodies that has been widespread concerned. Current research in the field of the TiO2 is on the application of its optical properties. One is the preparation of the nano-TiO2 dye-sensitized cells (DSSC), one of the others is the application of its photocatalyst property. DSC is a new type of photochemical solar cell. For the superiority of its fabrication process simple, low cost, stable and environmental friendly TiO2 has a good prospect. TiO2 can degrade the air poisonous gases and kill many bacterias. Toxins released from bacterias and fungals can be decomposed and harmless disposaled, meanwhile, it also has functions of deodorization and antifouling. This paper has two parts, the first part is that preparation of a series of TiO2 hydrosol, and the dye sensitization solar cell's electro-optic from this for raw material by the compound doping way. The plant chlorophyll used as the dye for preparing the solar cell. Use XRD to detect crystal structure and AFM to detect the surface morphology. The second part is that preparation of a transparent photocatalyst hydrosol in normal temperature. With Delsa-nano particle size analyzer and UV spectrophotometer analysis, the particle size and light receptivity can be tested. Then we use it to degradate the dye Acid Red 3R.The experiment proved that the photoelectrode prepared in compound doping way enhance the DSSC's electro-optical performance. Compared with the others the makeup of Fe-Ti-V way show the best Performance, obtaining the open-circuit voltage and the short-circuit current respectively as 602mV and 430μA. Experiment of degradation of acid scarlet 3R using the transparent nano-TiO2 hydrosol proved that the 100mg/L acid scarlet 3R is degraded above 95% under the sunlight in 80min, so the light catalyst has a good photochemical catalysis effect. As this photocatalyst stable performance, simple process, it has good value.