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Journal ArticleDOI

Study of structural, morphological and magnetic properties of Ag substituted cobalt ferrite nanoparticles prepared by honey assisted combustion method and evaluation of their antibacterial activity

TL;DR: In this article, a honey assisted combustion method was used to investigate the structural and magnetic properties of cobalt-ferrite nanoparticles along with their antibacterial activity, and the results of these properties are reported in the present manuscript.
About: This article is published in Journal of Magnetism and Magnetic Materials.The article was published on 2019-01-01. It has received 70 citations till now. The article focuses on the topics: Coercivity & Spinel.
Citations
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Journal ArticleDOI
TL;DR: In this paper, the authors reviewed the CoFe2O4 nanoparticles doped with various elements and their applications in various fields, including permanent magnets, magnetic recorders in high-density and micro-wave devices, and magnetic fluids.

140 citations

Journal ArticleDOI
TL;DR: In this paper, the zinc ferrite (ZnFe2O4) nanoparticles were prepared by a green method using Limonia acidissima (wood apple) juice.

114 citations

Journal ArticleDOI
TL;DR: In this article, the nanostructured zinc-doped cobalt ferrites (Zn x Co 1−x Fe2O4 where x ranges from 0.0 to 0.6 with the step of 0.2) were further characterized using XRD, SEM with EDAX, TEM, FTIR, UV-DRS, and luminescence spectroscopy.
Abstract: The nanostructured zinc-doped cobalt ferrites (Zn x Co 1−x Fe2O4 where x ranges from 0.0 to 0.6 with the step of 0.2) were prepared by combustion method using curd as a green fuel. The prepared nanoparticles were further characterized using XRD, SEM with EDAX, TEM, FTIR, UV-DRS, and luminescence spectroscopy. From the XRD, it shows that these nanomaterials exhibit average crystallite size in the range ∼ 12-21 nm with inverse cubic spinel structure. The agglomerated and spherical structure of the nanoparticles is confirmed by SEM and TEM. The vibrational stretching modes of tetrahedral (582 cm−1) and octahedral (385 cm−1) sites were confirmed by FTIR. Further, density functional theory (DFT) analysis was carried out in order to study the electronic properties of cobalt ferrite and zinc-doped cobalt ferrite nanostructures. The band gap results for pure CoFe2O4 and Zn-doped CoFe2O4 nanoparticles were closer to the experimental values. The luminescence spectrum shows peaks correspond to violet, blue, green, yellow and orange emission. The photodegradation studies of obtained nanoparticles were evaluated for the degradation of Congo red and Evans blue dyes under visible light irradiation. Pure CoFe2O4 and Zn-doped CoFe2O4 nanoparticles were inspected against both gram-positive (Staphylococcus aureus) and the gram-negative (Salmonella typhi) bacteria for antibacterial studies. The gram-negative bacterium Salmonella typhi shows high antibacterial activity with the inhibition zone of Zn-doped CoFe2O4 (22 mm) compared to pure CoFe2O4 (16 mm)

102 citations

Journal ArticleDOI
TL;DR: In this paper, a review of the current status of cobalt ferrite nanoparticles and nanocomposites with respect to its application in wastewater treatment, advantages, and toxicity aspects is presented.

69 citations

Journal ArticleDOI
TL;DR: In this paper, copper ferrite (CuFe2O4) nanoparticles were synthesized by sol-gel auto combustion method using cow-urine as a chelating agent.

63 citations

References
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Journal ArticleDOI
TL;DR: Potential opportunities for the combination of hyperthermia-based therapy and controlled drug release paradigms--towards successful application in personalized medicine are portrayed.

1,380 citations

Journal ArticleDOI
TL;DR: In this article, a summary on the physical concepts of ferrofluids, hyperthermia principal, magnetic properties and synthesis methods of nanosized ferrites is given, based on the importance of ferrite particles in ferro-fluids for hyper-thermia treatment.

612 citations

Journal ArticleDOI
TL;DR: In this article, the superparamagnetism of Fe3O4@Ag nanoparticles with both superparamagnetic and antibacterial properties were obtained by reducing silver nitrate on the surface of the nanoparticles using the water-in-oil microemulsion method.
Abstract: Bifunctional Fe3O4@Ag nanoparticles with both superparamagnetic and antibacterial properties were prepared by reducing silver nitrate on the surface of Fe3O4 nanoparticles using the water-in-oil microemulsion method. Formation of well-dispersed nanoparticles with sizes of 60 ± 20 nm was confirmed by transmission electron microscopy and dynamic light scattering. X-ray diffraction patterns and UV–visible spectroscopy indicated that both Fe3O4 and silver are present in the same particle. The superparamagnetism of Fe3O4@Ag nanoparticles was confirmed with a vibrating sample magnetometer. Their antibacterial activity was evaluated by means of minimum inhibitory concentration value, flow cytometry, and antibacterial rate assays. The results showed that Fe3O4@Ag nanoparticles presented good antibacterial performance against Escherichia coli (gram-negative bacteria), Staphylococcus epidermidis (gram-positive bacteria) and Bacillus subtilis (spore bacteria). Furthermore, Fe3O4@Ag nanoparticles can be easily removed from water by using a magnetic field to avoid contamination of surroundings. Reclaimed Fe3O4@Ag nanoparticles can still have antibacterial capability and can be reused.

536 citations

Journal ArticleDOI
TL;DR: The magnetic properties, synthesis methods and some medical applications, including the hyperthermia, magnetic resonance imaging (MRI), magnetic separation and drug delivery of cobalt ferrite nanoparticles are introduced.

391 citations

Journal ArticleDOI
TL;DR: In this paper, the magnetic properties of cobalt ferrite nanoparticles synthesized by a sol-gel auto combustion method using nitrates of respective metal ions have been studied using X-ray diffraction pattern indexed by Rietveld program.

230 citations

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