Synthesis and Characterization of Chitosan-Coated Cobalt Ferrite Nanoparticles and Their Antimicrobial Activity.

Autor: Gingasu, Dana, Mindru, Ioana, Patron, Luminita, Ianculescu, Adelina, Vasile, Eugeniu, Marinescu, Gabriela, Preda, Silviu, Diamandescu, Lucian, Oprea, Ovidiu, Popa, Marcela, Saviuc, Crina, Chifiriuc, Mariana Carmen
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Zdroj: Journal of Inorganic & Organometallic Polymers & Materials; Sep2018, Vol. 28 Issue 5, p1932-1941, 10p
Abstrakt: Chitosan-coated cobalt ferrites were synthesized by wet ferritization method through two different approaches. The nanostructured chitosan-coated cobalt ferrites were characterized by: X-ray diffraction (XRD), scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM/HR-TEM), thermal analysis, infrared spectroscopy (IR) and Mössbauer spectroscopy. X-ray diffraction patterns confirmed the formation of CoFe2O4 cubic spinel structure with an average crystallite size of 1.75 and 5.5 nm, respectively. Mössbauer spectra consist in a central quadrupole pattern. The deconvolution in the hypothesis of Lorentzian line shape evidences the prevailing presence of Fe3+ ions at the nanoparticle surface. The antimicrobial activity of chitosan-coated cobalt ferrites against Gram-positive and Gram-negative bacteria, as well as fungal strains was investigated. Based on the results, chitosan-coated cobalt ferrites are thought to be suitable candidates for the development of novel anti-biofilm agents. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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