ANALISIS MIKROSTRUKTUR NANOPARTIKEL CeO2 DIDOPING Zn YANG DISINTESIS MENGGUNAKAN METODE PRESIPITASI

Abstract

Zn-doped CeO₂ nanoparticles with various Zn content of 0 - 20% have been synthesized by using precipitation method in the solvent mixture of aquades and isopropanol at room temperature.  The precipitant was calcinated at temperatur 300^oC for 3 hours.  The structural properties of CeO₂ nanoparticles were characterized by using x-ray diffraction.  X-ray diffraction pattern was analyzed to investigate the influence of Zn doping on crystalite size, lattice constant and lattice strain of CeO₂ nanoparticle.  Observation to the peaks diffraction indicate that all of the CeO₂ nanoparticle with various Zn doping have cubic fluorite structure and lattice constants in the range 5,4155 Å – 5,4254 Å.  The crystallite sizes of 6 – 11 nm were obtained by Williamson-Hall plot method.  Incorporation of Zn to the CeO₂ nanoparticle decrease the crystallite size.  The crystallite size of Zn-doped CeO₂ nanoparticles is depend on Zn%.

Keywords: CeO₂, nanoparticle, precipitation, lattice constant, x-ray diffraction