Fabrication of Monodisperse CeO2 Hollow Spheres Assembled by Nano-octahedra

A simple hydrothermal method has been employed to fabricate monodisperse CeO2 hollow spheres assembled by nano-octahedra. Results revealed that the as-obtained CeO2 hollow spheres were assembled by nano-octahedra with an average edge length of ca. 20 nm. A possible crystal growth and hollowing mechanism was suggested based oil the detailed experiment. The CO oxidation properties were investigated, and the novel Structured CeO2 hollow spheres exhibitcd it higher catalytic properties compared to the commercial CeO2 powders.