Fig. 9

a Dye decolorization performance in various systems [Dye concentration = 500 mg L− 1, Catalyst loading = 1 g L− 1, pH = 4.2, Time = 90 min]. b Decolorization Percentage of BG dye in various systems [Dye concentration = 500 mg L− 1, Catalyst loading = 1 g L− 1, pH = 4.2, Time = 90 min]