Shift the Photocatalytic Activity of P25 TiO₂ Nanoparticles toward the Visible Region upon Surface Modification with Organic Hybrid of Phosphotungstate

Figure 5

UV-Vis absorption spectra of MB (30 mg/L, ) during the photodegradation under visible light in the presence of TiO₂-PTA-HMT-MB (0.5 g/L) (a), (1.0 g/L) (b), and / vs. time curves (c).

(a)

(b)

(c)