Fig. 10From: Effect of Zinc Acetate Concentration on Optimization of Photocatalytic Activity of p-Co3O4/n-ZnO HeterostructuresIrradiation time-dependent UV-vis absorbance spectra of MO aqueous solution: a without catalyst, and in the presence of b pure Co3O4, c Co3O4/ZnO-5, d Co3O4/ZnO-15, e Co3O4/ZnO-25, f Co3O4/ZnO-35, g Co3O4/ZnO-45, and h Co3O4/ZnO-55, respectivelyBack to article page