TiO₂/g-C₃N₄ Visible-Light-Driven Photocatalyst for Methylene Blue Decomposition

Figure 8

(a) Effect of pH on MB decolorization; the inset presents the estimation for point of zero charge (pH_PZC) of (2/8)TiO₂/g-C₃N₄; (b) yield of MB decolorization with present of the scarvengers using (2/8) TiO₂/g-C₃N₄ catalyst (conditions: V = 100 mL, C_0(MB) = 10 ppm, m_catalyst = 0.02 g, V_scarvenger = 20 mL, illumination time: 120 min, ambient temperature); (c) UV–vis spectra; (d) kinetics of disappearance of chemical oxygen demand (COD) on (2/8)TiO₂/g-C₃N₄ (conditions: c) V = 100 mL, C_0(MB) = 10 ppm, m_catalyst = 0.02 g, illumination time: 200 min; (d) V = 100 mL, C_0(MB) = 500 ppm, m_catalyst = 1.00 g, illumination time: 120 min, ambient temperature.

(a)

(b)

(c)

(d)