中文摘要：

采用水热法制备了苝二酰亚胺（PTCDI）敏化的光催化剂TiO2／PTCDI以及PTCDI和酞菁铜（CuPc）共敏化的可见光光催化剂（TiO2／PTCDI）-CuPc。利用XRD，TEM和UV—Vis光谱对催化剂进行表面形貌和结构表征。以罗丹明B的光催化降解为模型反应，考察敏化样品的可见光光催化性能。研究表明染料共敏化样品（TiO2／PTCDI）-CuPc的活性比TiO2和TiO2／PTCDI分别提高了223％和113％。应用能带结构理论，阐明了TiO2／PTCDI和（TiO2／PTCDI）-CuPc的光生电子转移路径和光催化降解机理。

英文摘要：

Dye-sensitized TiO2 photocatalysts using perylene diimide （ab. TiO2/PTCDI ） and co-sensitized using Perylenediimide（PTCDI） and copper phthaloeyanine （CuPc） （ ab. （TiO2/PTCDI） -CuPc ） as sensitizing compound were prepared by hydrothermal method. The crystalline structure and surface properties of the samples were characterized by XRD, TEM and UV-Vis spectra. The photocatalytic degradation of RhB under visible light illumination was used as the model reaction to investigate the photoeatalytie activities of dye-sensltized TiO2 samples. The results show that the photocatalytic activity of co-sensitized photocatalyst （TiO2/PTCDI）-CuPc was higher than that of TiO2 and TiO2/PTCDI, by the extent of 223% and 113% , respectively. According to the band theory, the electron transfer processes and photoeatalytic degradation mechanism of TiO2/PTCDI and （TiO2/PTCDI） -CuPe were explained.