Fig. 6
From: Surfactant-free Synthesis of CuO with Controllable Morphologies and Enhanced Photocatalytic Property
Absorption spectra of RhB under visible light irradiation with different CuO nanostructures. a Without any catalyst and H2O2, b only with H2O2, c with sample A, d with sample B, e with sample C, f with sample D, g with sample E, h with sample F, and i plot of the extent of photodegradation of RhB which corresponds to A, B, C, D, E, F, G and H