Fig. 3
From: Cu-doped ZnO nanoparticles and its application for the photocatalytic degradation of Rhodamine B

SEM images of ZnO and 0.5% Cu/ZnO samples (a–c is the SEM of ZnO catalyst, d–f is the SEM of 0.5% Cu/ZnO catalyst).
From: Cu-doped ZnO nanoparticles and its application for the photocatalytic degradation of Rhodamine B

SEM images of ZnO and 0.5% Cu/ZnO samples (a–c is the SEM of ZnO catalyst, d–f is the SEM of 0.5% Cu/ZnO catalyst).