Research Article

Characterization of Co2+- and Fe3+-Codoped TiO2 Nanomaterials for Photocatalytic Degradation of Organic Pollutants under Visible Light Irradiation

Figure 6

UV-vis spectra of undoped TiO2, TiO2-1%Co, TiO2-2.5%Co, TiO2-5%Co, TiO2-1%Co-2.5%Fe, and TiO2-2.5%Co-2.5%Fe samples.