biostudies-literatureKwiatkowski ALRussian Science Foundation541https://www.ebi.ac.uk/biostudies/studies/S-EPMC10976011biostudies-literatureUnknown14(6)We report a new facile method for the synthesis of prolate cobalt ferrite nanoparticles without additional stabilizers, which involves a co-precipitation reaction of Fe³⁺ and Co²⁺ ions in a static magnetic field. The magnetic field is demonstrated to be a key factor for the 1D growth of cobalt ferrite nanocrystals in the synthesis. Transmission electron microscopy (TEM), X-ray diffraction (XRD), and Raman spectroscopy are applied to characterize the morphology and structure of the obtained nanoparticles. According to TEM, they represent nanorods with a mean length of 25 nm and a diameter of 3.4 nm that have a monocrystalline structure with characteristic plane spacing of 2.9 Å. XRD and Raman spectroscopy confirm the spinel CoFe₂O₄ structure of the nanorods. After aging, the synthesized nanorods exhibit maximum saturation magnetization and coercivity equal to 30 emu/g and 0.3 kOe, respectively. Thus, the suggested method is a simple and "green" way to prepare CoFe₂O₄ nanorods with high aspect ratios and pronounced magnetic properties, which are important for various practical applications, including biomedicine, energy storage, and the preparation of anisotropic magnetic nanocomposites.Nanomaterials (Basel, Switzerland)Cobalt Ferrite Nanorods Synthesized with a Facile "Green" Method in a Magnetic Field.PMC1097601121-73-10197Philippova OEShipkova EDShibaev AVShvets PVMuravlev DAKuznetsov IAKwiatkowski ALKessel DETimchenko ISMaslakov KIfalseCobalt Ferrite Nanorods Synthesized with a Facile "Green" Method in a Magnetic Field.We report a new facile method for the synthesis of prolate cobalt ferrite nanoparticles without additional stabilizers, which involves a co-precipitation reaction of Fe³⁺ and Co²⁺ ions in a static magnetic field. The magnetic field is demonstrated to be a key factor for the 1D growth of cobalt ferrite nanocrystals in the synthesis. Transmission electron microscopy (TEM), X-ray diffraction (XRD), and Raman spectroscopy are applied to characterize the morphology and structure of the obtained nanoparticles. According to TEM, they represent nanorods with a mean length of 25 nm and a diameter of 3.4 nm that have a monocrystalline structure with characteristic plane spacing of 2.9 Å. XRD and Raman spectroscopy confirm the spinel CoFe₂O₄ structure of the nanorods. After aging, the synthesized nanorods exhibit maximum saturation magnetization and coercivity equal to 30 emu/g and 0.3 kOe, respectively. Thus, the suggested method is a simple and "green" way to prepare CoFe₂O₄ nanorods with high aspect ratios and pronounced magnetic properties, which are important for various practical applications, including biomedicine, energy storage, and the preparation of anisotropic magnetic nanocomposites.2024-01-01T00:00:00Z2024 Mar2025-04-26T11:25:35.427Z2025-04-06T13:40:09.505ZS-EPMC109760113853568910.3390/nano14060541