synthesis and characterization of cadmium oxide nanoparticles for antimicrobial activity

cadmium oxide (cdo) nanoparticles were prepared by precipitation method using cadmium acetate and ammonia solution. presence of chemical species, were verified by fourier transform infra red (ftir) spectrum. from x-ray diffraction (xrd) spectrum the particle size, d-spacing value and structure of the nanoparticle were analysed. size of the nanoparticles and the elemental composition were detected by using scanning electron microscope (sem) with energy dispersive x-ray analysis (edax). the optical band gap of cdo nanoparticles has been determined by using ultraviolet-visible (uv-vis) absorption spectroscopy. the antimicrobial activities of different concentration of the cdo nanoparticles were tested by treating e.coli cultures with cdo nanoparticles. cadmium oxide nanoparticles show effective antimicrobial activity. different organisms were used to observe the zone of inhibition of cdo nanoparticles.