Tailoring the super-paramagnetic nature of MgFe 2 O 4  nanoparticles by In 3+  incorporation

Naik, M.Z.; Salker, A. V.

doi:10.1016/j.mseb.2016.05.019

Cited by 29 publications

(4 citation statements)

References 34 publications

(38 reference statements)

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“…A lower Ms value (21 emu/g) was measured in the MgFe2O4-MW sample (Figure 4 B). For the MgFe2O4 nanoparticles, similar Ms values (between 12 and 32 emu/g) to our results have been reported in other works of literature [45][46][47].…”

Section: Magnetization Measurementssupporting

confidence: 92%

Simplified Synthesis of the Amine-Functionalized Magnesium Ferrite Magnetic Nanoparticles and Their Application in DNA Purification Method

Ilosvai,

Gerzsenyi,

Sikora

et al. 2023

IJMS

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For pathogens identification, the PCR test is a widely used method, which requires the isolation of nucleic acids from different samples. This extraction can be based on the principle of magnetic separation. In our work, amine-functionalized magnesium ferrite nanoparticles were synthesized for this application by the coprecipitation of ethanolamine in ethylene glycol from Mg(II) and Fe(II) precursors. The conventional synthesis method involves a reaction time of 12 h (MgFe2O4-H&R MNP); however, in our modified method, the reaction time could be significantly reduced to only 4 min by microwave-assisted synthesis (MgFe2O4-MW MNP). A comparison was made between the amine-functionalized MgFe2O4 samples prepared by two methods in terms of the DNA-binding capacity. The experimental results showed that the two types of amine-functionalized magnesium ferrite magnetic nanoparticles (MNPs) were equally effective in terms of their DNA extraction yield. Moreover, by using a few minutes-long microwave synthesis, we obtained the same quality magnesium ferrite particles as those made through the long and energy-intensive 12-h production method. This advancement has the potential to improve and expedite pathogen identification processes, helping to better prevent the spread of epidemics.

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Section: Magnetization Measurementssupporting

confidence: 92%

Simplified Synthesis of the Amine-Functionalized Magnesium Ferrite Magnetic Nanoparticles and Their Application in DNA Purification Method

Ilosvai,

Gerzsenyi,

Sikora

et al. 2023

IJMS

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“…The lower values of the M s can be related to the presence of Ag 3 PO 4 particles and rGO sheets in the rGO/MFe 2 O 4 (M= Ca, Mg)/Ag 3 PO 4 composites. However, the magnetic behavior of rGO/MFe 2 O 4 (M= Ca, Mg)/Ag 3 PO 4 composites allows their easy separation from suspended system by an external magnet .…”

Section: Resultsmentioning

confidence: 99%

New Magnetically Recyclable Reduced Graphene Oxide rGO/MFe₂O₄ (M= Ca, Mg)/Ag₃PO₄ Nanocomposites With Remarkably Enhanced Visible‐light Photocatalytic Activity and Stability

Bagherzadeh

Kaveh

2018

Photochem & Photobiology

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New magnetically separable CaFe O /Ag PO , MgFe O /Ag PO , rGO/CaFe O /Ag PO and rGO/MgFe O /Ag PO photocatalysts were synthesized by the hydrothermal and ion-exchange deposition method. These four types of photocatalyst were used for degradation of Methylene blue (MB), Methyl orange (MO) and 4-chlorophenol (4-CP) in aqueous solution under visible-light illumination. The optimized photocatalyst, i.e. rGO/CaFe O /Ag PO with a mass ratio of (1:3:9) composite not only shows the highest photocatalytic performance for the degradation of MB, MO and 4-CP under visible light irradiation among the other synthesized photocatalysts but also exhibits high reusability and stability for at least five cycles. It was found that the impressive separation of electron-hole pairs as well as presence of rGO sheets which act as a high speed charge transfer were responsible for increasing photocatalytic activity over the optimized photocatalyst under visible-light irradiation. A possible mechanism for the increased photocatalytic activity of the rGO/CaFe O /Ag PO with a mass ratio of (1:3:9) composite was discussed in detail.

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“…Therefore, in this study, NPs with diameters of 10 nm, 30 nm, 50 nm, 70 nm, and 90 nm were investigated. It is worth noting that the magnetic susceptibility of MNPs is not constant, and is highly dependent on the particle size, e.g., MNPs smaller than 50 nm can be super-paramagnetic (χ 1) [31]. In order to capture the complex effects of the numerous parameters (magnetic field intensity (B), the gradient of magnetic field intensity ∇B, particle size (d), and magnetic susceptibility (χ)) while they themselves are mutually coupled, we here introduce a new parameter: magnetic force density ( f = χB∇B/µ 0 [N/m 3 ]).…”

Section: Materials Propertiesmentioning

confidence: 99%

Mathematical Optimisation of Magnetic Nanoparticle Diffusion in the Brain White Matter

Yuan

Yang

Zhan

et al. 2023

IJMS

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Magnetic nanoparticles (MNPs) are a promising drug delivery system to treat brain diseases, as the particle transport trajectory can be manipulated by an external magnetic field. However, due to the complex microstructure of brain tissues, particularly the arrangement of nerve fibres in the white matter (WM), how to achieve desired drug distribution patterns, e.g., uniform distribution, is largely unknown. In this study, by adopting a mathematical model capable of capturing the diffusion trajectories of MNPs, we conducted a pilot study to investigate the effects of key parameters in the MNP delivery on the particle diffusion behaviours in the brain WM microstructures. The results show that (i) a uniform distribution of MNPs can be achieved in anisotropic tissues by adjusting the particle size and magnetic field; (ii) particle size plays a key role in determining MNPs’ diffusion behaviours. The magnitude of MNP equivalent diffusivity is reversely correlated to the particle size. The MNPs with a dimension greater than 90 nm cannot reach a uniform distribution in the brain WM even in an external magnitude field; (iii) axon tortuosity may lead to transversely anisotropic MNP transport in the brain WM; however, this effect can be mitigated by applying an external magnetic field perpendicular to the local axon track. This study not only advances understanding to answer the question of how to optimise MNP delivery, but also demonstrates the potential of mathematical modelling to help achieve desired drug distributions in biological tissues with a complex microstructure.

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Tailoring the super-paramagnetic nature of MgFe 2 O 4 nanoparticles by In 3+ incorporation

Cited by 29 publications

References 34 publications

Simplified Synthesis of the Amine-Functionalized Magnesium Ferrite Magnetic Nanoparticles and Their Application in DNA Purification Method

Simplified Synthesis of the Amine-Functionalized Magnesium Ferrite Magnetic Nanoparticles and Their Application in DNA Purification Method

New Magnetically Recyclable Reduced Graphene Oxide rGO/MFe₂O₄ (M= Ca, Mg)/Ag₃PO₄ Nanocomposites With Remarkably Enhanced Visible‐light Photocatalytic Activity and Stability

Mathematical Optimisation of Magnetic Nanoparticle Diffusion in the Brain White Matter

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Tailoring the super-paramagnetic nature of MgFe 2 O 4 nanoparticles by In 3+ incorporation

Cited by 29 publications

References 34 publications

Simplified Synthesis of the Amine-Functionalized Magnesium Ferrite Magnetic Nanoparticles and Their Application in DNA Purification Method

Simplified Synthesis of the Amine-Functionalized Magnesium Ferrite Magnetic Nanoparticles and Their Application in DNA Purification Method

New Magnetically Recyclable Reduced Graphene Oxide rGO/MFe2O4 (M= Ca, Mg)/Ag3PO4 Nanocomposites With Remarkably Enhanced Visible‐light Photocatalytic Activity and Stability

Mathematical Optimisation of Magnetic Nanoparticle Diffusion in the Brain White Matter

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Product

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New Magnetically Recyclable Reduced Graphene Oxide rGO/MFe₂O₄ (M= Ca, Mg)/Ag₃PO₄ Nanocomposites With Remarkably Enhanced Visible‐light Photocatalytic Activity and Stability