Photosensitized Degradation Activity of Dye by Fe-doped TiO_2 Nanocrystals Synthesize via Gas Combustion Flames

Fe~(3+)doped TiO_2 nanoparticles were synthesized by diffusion flame method.The activity of Fe-TiO_2 nanoparticles on the photodegradation of RhB was investigated under visible light irradi- ation.And the photosensitized degradation mechanism was elaborated to demonstrate the improved photocatalytic activity of Fe-doped TiO_2 nanoparticles.The best of photocatalytic activity of 0.12mol% Fe~(3+)doped TiO_2 nanoparticles are attributed to the charge-transfer transition from 3d orbital of Fe~(3+)to the conduction band of TiO_2 under visible light irradiation,which can lead to effectively photocatalytic reaction.