Studies on the Structures and Optical Properties of TiO2 Doped with Transition Metals

The structures and optical properties TiO2 doped with 4th periodic transition metal ions were investigated in this paper. The characterization results of X-ray photoelectron spectroscopy and X-ray diffraction show that the metal ions exist in oxidative states, and composites form because of the reaction between doped metal ions and TiO2. The absorption spectroscopy of TiO2 doped with zinc is mainly in ultraviolet region, close to that of pure TiO2. While for TiO2 doped with other transition metal ions including V, Cr, Mn, Fe, Co, Ni and Cu ions, the absorption spectroscopies cover ultraviolet region and visible light region, which are broaden greatly comparing with that of pure TiO2.