Synthesis of Fe3O4 nanoparticles and its antibacterial application

Abstract

The Present work outlines the antibacterial activity of Fe 3 O 4 nanoparticles synthesized through che-mical combustion method where ferric nitrate is used as precursor material and urea as fuel with the assistant of Tween 80, a non-ionic surfactant. The obtained Fe 3 O 4 nanoparticles were characterized by X-ray diffraction, differential thermal analysis/thermo gravimetric analysis (DTA/TGA), particle size analyzer, SEM with EDAX and TEM. Various parameters such as dislocation density, micro strain, analysis of weight loss and surface morpho-logical studies were calculated. The particle size was cal-culated from XRD and it was found to be 33–40 nm. Using well diffusion method antibacterial activity of Fe 3 O 4 nanoparticles was tested against gram-positive and gram-negative Staphylococus aureus, Xanthomonas, Escherichia coli and Proteus vulgaris. Fe 3 O 4 nanoparticles exhibited strong antibacterial activity against bacterial species.