In this research a new synthesis of CeO2 nanoparticles using cerium chloride as precursor have been investigated. Samples were obtained by wet chemical method and characterized by the Powder X-ray Diffraction (PXRD), Scanning Electron Microscopy (SEM), high resolution transmission electron microscopy (HRTEM), Fourier transform infrared spectroscopy (FTIR) and UV-Vis spectrophotometer. Particle size has been obtained as 50 nm for annealed nanoparticles increasing with the increase of the annealing temperature and they changed from sphere-like shaped to cubic-like shaped with increasing annealing temperature. Detailed measurements of XRD spectra exhibited cubic structure of nanocrystals. The surface morphological studies from SEM depicted a change in shape and crystality of particles with formation of clusters for calcined particles. The particle size of CeO2 was around 50 nm as estimated by XRD technique and direct HRTEM observation. The sharp peaks in FTIR spectrum determined the purity of CeO2 nanoparticles and absorbance peak of UV-Vis spectrum showed the small bandgap energy of 3.26 ev.

Keywords: CeO2 nanoparticles, Wet chemical, Synthesis, Crystalline particle.