Microstructural properties and antibacterial activity of Ce doped NiO through chemical method

The nickel oxide and different concentration of Cerium ions (0.01 M, 0.02 M and 0.03 M) doped NiO nanoparticles (NPs) were synthesized by chemical method. The XRD spectra exhibited the cubic structure of NiO. The average crystalline sizes were observed as 43 nm, 36 nm, 29 nm and 23 nm in NiO and Ce doped NiO NPs, respectively. The Ni (2p), O (1s) and Ce (3d) oxidation states were confirmed by XPS spectra. The FESEM image and TEM image showed the flowers with spherical nanostructure in undoped and doped NiO NPs. The Chemical compositions were identified by EDAX spectra. Metal-oxide (Ni–O) functional groups were found at 439, 435, 445 and 446 cm−1 in undoped and doped samples respectively. The optical studies were carried out using UV–Vis spectra and PL studies. Magnetization values were enhanced in Ce doped NiO NPs as compared to NiO NPs. Antibacterial activities were done by various human pathogens with using NiO and Ce doped NiO NPs.