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Article

Soft Chemistry Synthesis and Characterization of CoFe1.8RE0.2O4 (RE3+ = Tb3+, Er3+) Ferrite

1
“Ilie Murgulescu” Institute of Physical Chemistry, Romanian Academy, Splaiul Independentei 202, 060021 Bucharest, Romania
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Faculty of Chemistry, “Politehnica” University of Bucharest, Polizu Street, No. 1–7, 011061 Bucharest, Romania
3
National Institute of Materials Physics, Atomistilor Street, No. 405 A, 077125 Magurele, Romania
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Microbiology Department, Faculty of Biology & Life, Environmental and Earth Sciences Division, Research Institute of the University of Bucharest, ICUB, University of Bucharest, Splaiul Independentei 91–95, 050095 Bucharest, Romania
*
Author to whom correspondence should be addressed.
Academic Editor: Andrea Caneschi
Magnetochemistry 2022, 8(2), 12; https://doi.org/10.3390/magnetochemistry8020012
Received: 15 December 2021 / Revised: 13 January 2022 / Accepted: 15 January 2022 / Published: 19 January 2022
(This article belongs to the Special Issue Magnetic Materials and Their Electronic and Thermokinetic Properties)
Nanosized CoFe1.8RE0.2O4 (RE3+ = Tb3+, Er3+) ferrites were obtained through wet ferritization method. These ferrites were characterized by X-ray diffraction (XRD), scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM/HR-TEM), Fourier transform infrared spectroscopy (FTIR), Mössbauer spectroscopy and magnetic measurements. The XRD results revealed that the average crystallite size is 5.77 nm for CoFe1.8Tb0.2O4 and 6.42 nm for CoFe1.8Er0.2O4. Distribution of metal cations in the spinel structure estimated from X-ray diffraction data showed that the Tb3+ and Er3+ ions occupy the octahedral sites. TEM images indicated the presence of polyhedral particles with average size 5.91 nm for CoFe1.8Tb0.2O4 and 6.80 nm for CoFe1.8Er0.2O4. Room temperature Mössbauer spectra exhibit typical nanoscaled cobalt ferrite spectra in good agreement with XRD and TEM data. The saturation magnetization value (Ms) is 60 emu/g for CoFe1.8Tb0.2O4 and 80 emu/g for CoFe1.8Er0.2O4. CoFe1.8RE0.2O4 nanoparticles showed similar antimicrobial efficacy against the five tested microbial strains, both in planktonic and biofilm state. The results highlight the promising potential of these types of nanoparticles for the development of novel anti-biofilm agents and materials. View Full-Text
Keywords: nanospinel ferrites; wet chemical method; magnetic properties; antimicrobial activity nanospinel ferrites; wet chemical method; magnetic properties; antimicrobial activity
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MDPI and ACS Style

Gingasu, D.; Mindru, I.; Ianculescu, A.-C.; Diamandescu, L.; Surdu, V.-A.; Marinescu, G.; Bartha, C.; Preda, S.; Popa, M.; Chifiriuc, M.C. Soft Chemistry Synthesis and Characterization of CoFe1.8RE0.2O4 (RE3+ = Tb3+, Er3+) Ferrite. Magnetochemistry 2022, 8, 12. https://doi.org/10.3390/magnetochemistry8020012

AMA Style

Gingasu D, Mindru I, Ianculescu A-C, Diamandescu L, Surdu V-A, Marinescu G, Bartha C, Preda S, Popa M, Chifiriuc MC. Soft Chemistry Synthesis and Characterization of CoFe1.8RE0.2O4 (RE3+ = Tb3+, Er3+) Ferrite. Magnetochemistry. 2022; 8(2):12. https://doi.org/10.3390/magnetochemistry8020012

Chicago/Turabian Style

Gingasu, Dana, Ioana Mindru, Adelina-Carmen Ianculescu, Lucian Diamandescu, Vasile-Adrian Surdu, Gabriela Marinescu, Cristina Bartha, Silviu Preda, Marcela Popa, and Mariana Carmen Chifiriuc. 2022. "Soft Chemistry Synthesis and Characterization of CoFe1.8RE0.2O4 (RE3+ = Tb3+, Er3+) Ferrite" Magnetochemistry 8, no. 2: 12. https://doi.org/10.3390/magnetochemistry8020012

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