Characterization and activity of visible-light-driven TiO2 photocatalyst codoped with lanthanum and iodine

► La/I/TiO2 photocatalyst was synthesized using simple precipitation-dipping method. ► Only diffraction peaks of anatase phase can be discovered from XRD pattern of sample. ► Sample shows drastic and strong photoabsorption in the 400-800 nm wavelength range. ► La/I/TiO2 displays a higher photocatalytic activity than the P25 and monodoped TiO2. ► Work are helpful in treatment dye pollutants under simulated sunlight irradiation.