Characterisation and biological activity of rare-earth ion (Ce3+)-doped ZnO nanoparticles

Autor: Bitar, Maryam Al, Khalil, Mahmoud, Awad, R.
Zdroj: International Journal of Nanoparticles; 2023, Vol. 15 Issue: 1 p41-67, 27p
Abstrakt: Zn1-xCexO nanoparticles with x = 0, 0.01, 0.03, 0.05 and 0.07 were synthesised using a chemical co-precipitation method. The effects of Ce3+doping on the properties of zinc oxide (ZnO) nanoparticles were studied. The prepared nanoparticles were characterised by X-ray diffraction, transmission electron microscopy, Fourier transform infrared spectroscopy, photoluminescence spectroscopy (PL), UV-visible spectroscopy and vibrating sample magnetometry. The CeO2secondary phase induced structural and morphological changes. The Zn-O stretching peak shifted slightly due to the inclusion of Ce3+ions into the ZnO matrix. PL spectroscopy revealed minor defects and a direct bandgap of 2.81-3.15 eV. The samples exhibited diamagnetic behaviour with a ferromagnetic contribution at room temperature. The prepared samples were assessed for their antibacterial efficiency against six bacterial strains using the agar well diffusion method.
Databáze: Supplemental Index