Fe^3＋／Ce^3＋掺杂纳米TiO2的制备及光催化性能研究

Preparation and Photocatalysis Properties of TiO2 Nano-particles Doped with Fe3+/Ce3+

摘要:

采用溶胶-凝胶法制备了不同粒径的纯纳米TiO2和掺杂Fe^3＋和Ce^3＋的纳米TiO2。样品的X射线衍射（XRD）和透射电镜（TEM）表征说明：在相同的制备条件下，掺杂可以减小粒子粒径，掺Fe^3＋和Ce^3＋可以抑制晶相转变。光催化降解NO2的结果表明，在相同的制备方法和掺杂量的条件下合成的光催化剂对亚硝酸盐的降解率由高到低的顺序为：掺铁TiO2〉掺铈TiO2〉TiO2。

Abstract:

Nano-TiO2 and Fe3 ,Ce3 doped TiO2 particles in different sizes have been prepared by sol-gel method.XRD and TEM analysis results show that the particle size of doped TiO2 decreased;TiO2 crystal phase transition could be prevented by doping Fe3 and Ce3 .The results of photocatalytic degradation of NO2-show that of all the degradations of nitrite by photocatalyst synthesized under the same condition of preparation and doping amount,the highest is that of Fe3 doped TiO2,the second is that of Ce3 doped TiO2,and the last is that of TiO2.