Properties of pure and (Gd, Sm) doped CeO2 nano-particles
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Pure, Sm and Gd-doped Cerium oxide (ceria) powders have been prepared via hydrothermal technique. All powders were found to be nano-sized particles with particle size lie in the range of 4-16 nm as transmission electron microscope analysis revealed. The particle size was found to be decreased by doping as revealed from TEM images. X-ray diffraction studies show the formation of polycrystalline materials all belongs to cubic ceria phase. No other peaks belongs to separated phase of the dopants were recorded which ensure the good solubility of the dopants on ceria matrix. Small shift in the peak position accompanied with more broadening in Raman analysis is recorded. Optical enegy gaps, transition nature and particle size of the nano-powders all are speculated depending on the optical absorption measurement. The band gas was found fill in the range 6.1 to 5.9 eV in pure and doped powders.
M.H. Khedr, A.A. Fargali, W.M.A. El Rouby, Ahmed A. Aboud and A.Hamdedein (2015); Properties of pure and (Gd, Sm) doped CeO2 nano-particles, Int. J. of Adv. Res., 3 (03), 0, ISSN 2320-5407. DOI URL: https://dx.doi.org/
