Figure 7

(a) Degradation of MB with time using different samples under visible light irradiation. (b) Chemical kinetic study of photocatalytic MB degradation over various samples. (c) UV-Vis absorption spectra of the MB dye solution during photocatalysis at successive time intervals in the presence of the recycled BiVO4/Ag2%/rGO photocatalyst sample. (d) Bar diagram of the recycled runs showing the MB dye degradation efficiency over the BiVO4/Ag2%/rGO sample.