Fig. 6. DR-UV-Vis diffuse reflectance spectra (a) and magnetic studies (b) of the various nanocatalysts synthesized using low-frequency ultrasound; percentages of degradation of Acid Blue 113 at various concentrations in the presence of a fixed CoFe2O4/ZnO nanocatalyst dosage (1.5 g L−1) (c); and percentages of degradation of Acid Blue 113 [5 × 10−5 M] in the presence of various dosages of CoFe2O4/ZnO (d). The insert shows the observed characteristic changes in the UV-Vis spectra of AB113 degradation.
