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Synthesis, Physical Characterization, Antifungal And Antibacterial Activity Of Oleic Acid-Capped Nanomagnetite And Cobalt-Doped Nanomagnetite, Abbas Rahdar, Hamid Beyzaei, Mohsen Saadat, Xiao Yu, John F. Trant

Chemistry and Biochemistry Publications

Nanoparticles, 10-14 nm, consisting of either Fe₃O₄ or Co_0.2Fe_2.8O₄ stabilized with oleic acid, were prepared using solution combustion. Their structural and magnetic properties were examined using X-ray diffractometry, scanning electron microscopy, vibrating sample magnetometry, and Fourier-transform infrared spectroscopy. The properties of both sets of materials are similar except the cobalt-doped particles are considerably less magnetic. The in vitro inhibitory activities of the nanoparticles were assessed against pathogenic bacteria Shigella dysenteriae, Klebsiella pneumoniae, Acinetobacter baumannii, Streptococcus pyogenes, and pathogenic fungi and molds Candida albicans, Fusarium oxysporum and Aspergillus …