华东师范大学学报(自然科学版) ›› 2003, Vol. 2003 ›› Issue (1): 62-67.

• 论文 • 上一篇    下一篇

纳米CuO/TiO2的光催化降解及其应用

艾仕云；鲜跃仲；陈俊水；蔡琪；金利通   

  1. 华东师范大学 化学系，上海 200062
  • 收稿日期:2002-01-03 修回日期:2002-10-19 出版日期:2003-03-25 发布日期:2003-03-25

Photodegration of CuO/TiO2 Nanoparticles and Its Application

AI Shi-yun; XIAN Yue-zhogn; CHEN Jun-shui; CAI Qi; JIN Li-tong

  

  1. Department of Chemistry, East China Normal University, Shanghai 200062, China
  • Received:2002-01-03 Revised:2002-10-19 Online:2003-03-25 Published:2003-03-25

摘要： 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。

关键词: 纳米CuO/TiO2, 光催化降解, 罗丹明6G, 纳米粉体固定化, 污水处理, 纳米CuO/TiO2, 光催化降解, 罗丹明6G, 纳米粉体固定化, 污水处理

Abstract: 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.

Key words: photocatalystic dearadation, rhodamine 6G, immobilization of nanoparticles, wastewater treatment, CuO/TiO2 nanoparticles, photocatalystic dearadation, rhodamine 6G, immobilization of nanoparticles, wastewater treatment