| The preparation, characterization of nano-scale Pb0 95M0 05TiO.3 (M=Zn, Cd) PbTiO3 (doped by nitrate)and their application on photocatalytic degradation of dyes have been studied. Using lead acetate, titanium oxalate and citric acid as raw materials, doped PbTiO3 nanopowders have been prepared by sol-gel or by hydrothermol method . These methods have some advantages of simple process, little contamination of environment, lower cost and thus are suitable for production in larger scale. The characterization of doped PbTiO.3 nanopowders were carried out by TEM,XRD,FJ-IR, et aT.. XRD results showed that Pb0 95M005T103 nanopowders are tetragonal crystals. The average size of Pb0 95M005TiO3 nanopowders are about 60 nm. FT-IR,XRD results showed that the structure of PbTiO3 has not been changed after doping The characterization of modified PbTiO3 which prepared by hydrothermol method was carried out by TEM XRD FT-IR EA. The average size of this powder is about 100 nm. The efficiency of photocatalytic degradation by ultraviolet light and influence of irradiation time for turquoise blue(KGL) solution have been measured. The results show that the activity of modified PbTiO3 is better than that of pure PbTiO3 and the activity of fine crystals is better than that of fine powders. Experiments revel that the catalytic activity is also influenced by PH of the solution. As a simple model that inorganic ZnS segment directly assembling with organic molecule, a coordination polymer of [(ZnSX(en) 1,, has been synthesized by solvothermal method from elemental sulfur and zinc(II) salt in en. The compound has good photocatalytie activity for degradation of dyestuff X?R. It is thermo-stable at temperature below 2400C and photo-stable during the catalyzation. Zheng-jing, JIANG Directed by: Jie ,DAI...
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