[Retracted] Effect of Cu Doping on ZnO Nanoparticles as a Photocatalyst for the Removal of Organic Wastewater

Figure 9

(a) Plot of ln (Co/Ct) versus time for illustrating the kinetics of photodegradation. (b) Charge transportation process of Cu-doped ZnO NPs leading to photocatalytic dye degradation.

(a)

(b)