Ti^(3+)自掺杂黑色TiO_(2)薄膜的制备及可见光催化性能研究

Synthesis of Tiself-doped black TiO film with visible-light photocatalytic performance

采用溶剂热法制备出含Ti^(3+)自掺杂的黑色TiO_(2)薄膜,采用X射线衍射、扫描电镜、紫外可见漫反射吸收光谱、拉曼光谱和X射线光电子能谱等手段对其进行了表征。光催化结果显示,黑色TiO_(2)薄膜的可见光催化活性高于白色TiO_(2)薄膜,对罗丹明B的降解速率提高了约18%。其优越的可见光催化活性归因于表面的无定形TiO_(2)和较高的Ti^(3+)含量。

The self-doped black TiO_(2)film containing Ti^(3+)was prepared by solvothermal method,and characterized by XRD,SEM,UV-Vis,Raman and XPS.The photocatalytic results showed that the visible light catalytic activity of the film was higher than that of white TiO_(2)film,and the degradation rate of Rhodamine B was increased by18%.Its superior visible light catalytic activity was attributed to amorphous TiO_(2)and high Ti^(3+)content on the surface.