Abstract: Due to the remarkable optoelectronic, photocatalytic properties and promising practical application in photodegrading environmental pollutions, heterostructure semiconductor nanomaterials have attracted wide attention.CeO2/TiO2 heterostructure nanoflower composites were prepared by hydrothermal method.Structure and morphology of the heterostructure semiconductor nanomaterials were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscope (TEM), and ultraviolet-visible spectrum (UV-vis).It was found that the CeO2/TiO2 heterostructure nanoflower nanocomposites show excellent catalytic activity.There are about 98; degradation of methyl orange is degraded within 60 min.The enhanced photocatalytic activity may come from the special heterostructure.

Key words: Due to the remarkable optoelectronic, photocatalytic properties and promising practical application in photodegrading environmental pollutions, heterostructure semiconductor nanomaterials have attracted wide attention.CeO2/TiO2 heterostructure nanoflower composites were prepared by hydrothermal method.Structure and morphology of the heterostructure semiconductor nanomaterials were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscope (TEM), and ultraviolet-visible spectrum (UV-vis).It was found that the CeO2/TiO2 heterostructure nanoflower nanocomposites show excellent catalytic activity.There are about 98; degradation of methyl orange is degraded within 60 min.The enhanced photocatalytic activity may come from the special heterostructure.