Preparation and performance of CeO2 hollow spheres and nanoparticles

Abstract CeO 2 hollow spheres were synthesized by polystryrene sphere (PS) templates and CeO 2 nanoparticles were prepared by a facile method. The as-obtained products were characterized by scanning electron microscopy (SEM), N 2 adsorption-desorption, X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and UV-vis diffuse reflectance spectra. The results showed that the structure of the obtained CeO 2 hollow spheres was hollow microsphere with a diameter of 380 nm and the average particle size of CeO 2 nanoparticles was about 1700 nm. The two samples’ Brunauer-Emmett-Teller (BET) surface area was 67.1 and 37.2 m 2 /g. The CeO 2 hollow spheres had a better performance than nanoparticles at UV-shielding because of higher surface area and the structure of hollow sphere.