Structure, Morphological, Magnetic, and Antibacterial Studies of Undoped and Ce/Mg-Doped NiO Nanoparticle Semiconductors Synthesized by Microwave Method

The NiO and different concentrations of Ce/Mg-doped NiO were prepared by simple microwave method. For this synthesis, urea is added as a precursor material. The optical, magnetic, and antibacterial properties of the synthesized nanoparticles were investigated. The powdered XRD diffraction pattern gives the structural analysis and also the study revealed that the particles were multi polycrystalline nature. The HRTEM images show that the nanoparticles were homogeneous spherical particles. The UV–visible spectrum shows that while increasing the cerium doping concentration, the band gap energy also increases. The bacterial efficiency of the synthesized samples was analyzed by using Gram-positive and Gram-negative bacteria.