添加Fe3+对二氧化钛薄膜吸收光谱及光催化活性的影响

用阳极氧化法制备多孔状的纳米晶二氧化钛薄膜,通过往阳极氧化的电解液中添加Fe3 ,使其进入二氧化钛薄膜中,研究了掺杂Fe3 对二氧化钛薄膜吸收光谱和光催化活性的影响.在阳性氧化时通过往电解液中添加不同含量的Fe3 可以制得掺杂Fe3 浓度不同的薄膜,研究了掺杂Fe3 浓度不同对薄膜吸收光谱和光催化活性的影响.用X射线衍射、扫描电子显微镜、紫外-可见吸收光谱仪和X光电子能谱对薄膜进行了表征.实验发现掺杂Fe3 使二氧化钛薄膜对入射光的吸收带边发生红移,讨论了其作用机制.

Effect of Fe3+ Dopen of Titanium Dioxide Film on Absorption Spectra and Photo Catalysis

The porous titanium dioxide film in nano crystalline has been prepared by anodic oxidation on titanium. The effect of Fe3+dopen on absorption spectra photo-catalytic of the titanium dioxide films has been studied. The different amount of Fe3+ dopen of the film hasbeen taken by adding the different amount of the ferric ion the electrolyte during the anodic oxidation. The effect of different amount of Fe3+ -dopen on the absorption spectra and the photo-catalytic activity of the film have been studied. The films were characterized by X-raydiffraction, scanning electron microscope, UV-visible spectrophotometer, XPS and EDX analysis. The studies show that the Fe3+ dopencaused the red movement of the absorption edge for the incoming light.