Ta/TiO₂-and Nb/TiO₂-Mixed Oxides as Efficient Solar Photocatalysts: Preparation, Characterization, and Photocatalytic Activity

Figure 5

Solar photocatalytic decolorization of Orange II applying treated and untreated TiO₂. (Orange II conc. = 10 mg/L, catalyst conc. = 1.8 g/L).