Fig. 1: Preparation and characterization of CuO-NPs.
From: Electrochemical CO2 reduction to ethylene by ultrathin CuO nanoplate arrays
a Schematic illustration of the preparation of CuO-NPs. b SEM images of Cu foils at different anodic oxidation times. The scale bars are 500 nm. c Oxygen content of the Cu surface at different anodic oxidation times. d TEM image of the CuO-NPs. e AFM image of the CuO-NPs and the corresponding height profile from the dashed line.
