Figure 7

Photodegradation of methylene blue (MB) dye, (a) Effect of solar irradiation using CuONPs on photocatalytic degradation of MB dye; (b) Percent photocatalytic degradation of MB dye as effect of time with varying photocatalyst (CuONPs) load; (c) Photodegradation of dye versus irradiation time at varying photocatalyst (CuONPs) measured by optical absorption; (d) Plot of ln(C0/C) versus irradiation time for dye degradation kinetics.