Antibacterial effect assessment of ZnO nanoparticles, ZnO: Fe nanoflower and magnetic fields
Subject Areas : International Journal of Bio-Inorganic Hybrid Nanomaterials
Keywords: antibacterial effect, Escherichia coli, Quantum Dots, Staphylococci aurous,
Abstract :
Chemical precipitation method was used in order to synthesize of ZnO quantum dots (2-3nm) and ZnO:Fe nanoflower. Their physical properties and characteristics were assessed by X-raydiffraction (XRD), ultraviolet-visible (Uv) spectrophotometer and Transmission Electron Microscope (TEM) and it was shown that the obtained ZnO:Fe quantum dots have a hhexagonal crystal structureof a high-quality. Antibacterial effects of ZnO:Fe nanoparticles against some pathogenic bacteriawere investigated. Staphylococci aurous and Escherichia coli were used as test microorganisms.Disc bacteriological tests were used in order to assess the effects of ZnO:Fe concentration (0.35 to6 mg/mL) as antibacterial. The magnetic field with nanoparticles with different concentrations of ironcontaminatedoxide has no effect on stopping the growth of Staphylococcus aureus and Escherichiacoli bacteria in the field. The sizes of inhibition zone were different according to the type of bacteria andthe concentrations of ZnO:Fe nanoflower, the maximum diameter being observed for Staphylococcusaurous.