Size-dependent antimicrobial properties of the cobalt ferrite nanoparticles

The growing resistance of bacteria to conventional antibiotics elicited considerable interest to non-typical drugs. In this study, antimicrobial investigations were performed on low-size dispersion cobalt ferrite nanoparticles (Nps) fabricated by co-precipitation approach in several average sizes, i...

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Bibliographic Details
Published in:Journal of nanoparticle research : an interdisciplinary forum for nanoscale science and technology 2016-10, Vol.18 (10), p.1, Article 300
Main Authors: Žalnėravičius, Rokas, Paškevičius, Algimantas, Kurtinaitiene, Marija, Jagminas, Arūnas
Format: Article
Language:English
Subjects:
Antibiotics
Characterization and Evaluation of Materials
Chemical analysis
Chemistry and Materials Science
Cobalt
Inorganic Chemistry
Lasers
Materials Science
Microorganisms
Nanoparticles
Nanotechnology
Optical Devices
Optics
Photonics
Physical Chemistry
Research Paper
X-ray diffraction
X-ray spectroscopy
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Summary:The growing resistance of bacteria to conventional antibiotics elicited considerable interest to non-typical drugs. In this study, antimicrobial investigations were performed on low-size dispersion cobalt ferrite nanoparticles (Nps) fabricated by co-precipitation approach in several average sizes, in particular, 15.0, 5.0, and 1.65 nm. A variety of experimental tests demonstrated that the size of these Nps is determinant for antimicrobial efficiency against S. cerevisiae and several Candida species, in particular, C. parapsilosis, C. krusei , and C. albicans . The small and ultra-small fractions of CoFe 2 O 4 Nps possess especially strong antimicrobial activity against all tested microorganisms. The possible reasons are discussed. Nps were characterized by means of transmission and high-resolution transmission electron microscopy, X -ray diffraction, energy dispersive X -ray spectroscopy and atomic force microscopy, chemical analysis and magnetic measurements. Graphical Abstract
ISSN:1388-0764
1572-896X
DOI:10.1007/s11051-016-3612-x