One step preparation of visible-light responsive Fe-TiO_2 coating photocatalysts by MOCVD

摘要

Supported Fe-TiO_2 coating photocatalysts were prepared by metal organic chemical vapor deposition (MOCVD) in one step. The results of XRD revealed that the doping of Fe~(3+) into TiO_2 accelerated anatase-rutile phase transition. UV-Vis diffuse reflectance spectra showed a slight shift to longer wavelengths and an enhancement of the absorption in the visible region (> 400 nm) for the Fe doped TiO_2 coatings, compared to the non-doped sample. The Fe doped TiO_2 samples exhibited good photocatalytic activities for the degradation of an azo dye — methyl orange under visible light irradiation. The optimum deposition temperature was found to be 873 K.