Structural and optical properties of Cerium oxide nanoparticles
Sr. S Sebastiammal, V. Shally, M. Priyadharshini, Sr. Gerardin Jayam "Structural and optical properties of Cerium oxide nanoparticles", International Journal of Engineering Trends and Technology (IJETT), V49(2),69-70 July 2017. ISSN:2231-5381. www.ijettjournal.org. published by seventh sense research group
Ceria (CeO2) is a technologically important rare earth material because of its unique properties and various engineering and biological applications. The structural features and optical properties of the nanoparticles were determined in depth with X-ray powder diffraction (XRD), Field Emission Scanning Electron Microscopy (FESEM), UV-Vis absorption spectroscopy (UV), Photoluminescence spectroscopy (PL) and EDAX. The average crystallite size was estimated from the XRD pattern using Debye Scherrer equation as about 8.92 nm. The Cell volume, dislocation density are calculated. Lattice parameters were also determined and it is verified by Williamson- Hall plot. The EDAX analysis shows the chemical compositions of nanoparticles. The UV-visible absorption spectroscopic measurement results showed that the products had conspicuous quantum size effects. The absorption spectrum indicates that the nanostructured CeO2 has a wide band gap of 4.26 eV and the photoluminescence spectra shows a strong band at 360 nm and so it has promising application in optoelectronic materials.
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Precipitate, XRD, Band gap, Photoluminescence, Metal Oxide.