纳米CuO/TiO2的光催化降解及其应用

利用水热法制备了掺杂铜离子的纳米TiO₂粉体，并利用XRD和TEM对其进行了表征。通过对罗丹明6G 溶液光催化降解反应，研究了固定化纳米CuO/TiO₂粉体的光催化性质。实验表明，固定化纳米CuO/TiO₂粉体的光催化性高于固定化纳米TiO₂粉体。其机理是铜离子掺杂后提高了TiO₂对氧的吸附能力，减少了纳米粒子表面光生电子与光生空穴的复合，从而加速了光降解反应。另外，将其用于污水处理中取得了满意的结果。

Photodegration of CuO/TiO2 Nanoparticles and Its Application

CuO/TiO₂ nanoparticles were prepared with hydrothrmal method and characterized by means of X-ray diffraction (XRD) and Transmission electronmicroscopy (TEM). The photocatalytic properties of the immobilization of CuO/TiO₂ nanoparticles were assessed by measuring the photodegration of Rhodamine 6G in aqueous solution. These immobilization of CuO/TiO₂ nanoparticles showed much higher photoactivity than immobilization of TiO₂ nanoparticles. Results of this study also indicate that the photodegradative mechanisms are that the doping of Cu²⁺ in TiO₂ nanoparticles made the ability of TiO₂ particles adsorbed Oxggen enhance, and decreaded the recombination of photogenerated electrons and photogenerated hole in the interface of nanoparticles. Therefore the photogenerated reactions were accelerated. In addition, the results that the polluted water was treated with CuO/TiO₂ nanoparticles wre exciting and promising.