The fabrication and characterization of CeO/CuO nanocomposites with enhanced visible-light photocatalytic activity.

Spherical CuO nanocrystals were synthesized and CeO/CuO nanocomposites were successfully prepared from the spherical CuO nanocrystals. Characterization analysis was performed scanning electron microscope (SEM), transmission electron microscope (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and UV-visible diffusion reflectance spectroscopy (DRS) studies. In comparison with the CuO nanocrystals, the CeO/CuO nanocomposites exhibited high visible-light-induced photocatalytic activity for the degradation of methyl orange solution.