Fig. 5

(a) Absorbance reduction in the spectrum of MB with time due to photocatalysis, (b) % removal of photolysis (red line) and adsorption activity in the dark of CuO-NPs (black line).

(a) Absorbance reduction in the spectrum of MB with time due to photocatalysis, (b) % removal of photolysis (red line) and adsorption activity in the dark of CuO-NPs (black line).