Dielectric performance of CeO2/ZnO core–shell nanocomposite with their structural, optical and morphological properties

Abstract

Binary CeO2/ZnO nanocomposite was synthesized by combined co-precipitation and hydrothermal method. The dielectric property of the CeO2/ZnO was investigated. The grain boundaries were responsible for the increase and decrease of dielectric constant and AC conductivity which is discussed in the dielectric study. The prepared sample was carried out for the thermogravimetric, structural, optical, morphological investigations. The thermal stability of the sample was examined using the thermogravimetric analysis. Both the CeO2 and ZnO phases were confirmed from the Powder X-ray diffraction analysis (PXRD). The fourier transform infrared spectroscopy (FTIR) study further affirmed the presence of ceria and ZnO metal oxides in the nanocomposite is reported in detail. The particle size distribution graph was plotted from the high resolution-scanning electron microscopic image. CeO2/ZnO nanocomposite exhibited the spherical like structures which was confirmed from the high resolution transmission microscopy (HRTEM) images.

Keywords

• Kubelka-Munk function model
• CeO2/ZnO nanocomposite
• Diffuse reflectance spectroscopy
• Dielectrics Properties
• Electron microscopy
• Thermogravimetric analysis