Fe3O4 inverse spinal super paramagnetic nanoparticles

Rahman, Obaid Ur; Mohapatra, S C; Ahmad, Sharif

doi:10.1016/j.matchemphys.2011.11.032

Cited by 174 publications

(79 citation statements)

References 32 publications

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“…The peaks were indexed as planes (220), (311), (400), (511), and (440), which corresponds to a cubic unit cell, characteristic of a cubic spinel structure. (22)(23)(24) Therefore, it was confirmed that the crystalline structure of the obtained MNPs agreed with the structure of an inverse-spinel-type oxide. The crystallite size was determined from the full-width at half maximum (FWHM) of the strongest reflection of the (311) peak using the Scherrer approximation, which assumes the small crystallite size to be the cause of line broadening,…”

Section: Resultssupporting

confidence: 55%

Particle Size Determination and Magnetic Characterization of Fe3O4 Nanoparticles Using Superconducting Quantum Interference Device Magnetometry

2016

Sensors and Materials

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Magnetic nanoparticles (MNPs) were synthesized by a chemical co-precipitation method, which produces monodisperse, nanosize, benign superparamagetic iron oxide nanoparticles (SPIONs) at a reduced synthesis temperature. The crystal structure, morphology, and magnetic characterization were determined by X-ray diffraction (XRD), transmission electron microscopy (TEM), and superconducting quantum interference device (SQUID) magnetometer, respectively. The XRD pattern shows that the presence of the most intense peak corresponds to the (311) crystallographic orientation of the spinel phase of Fe 3 O 4 MNPs. The crystallite size of 4-6 nm was determined from the XRD pattern by using the Scherrer approximation. A TEM image of the MNP showed the mean diameter of 18 ± 10 nm. Magnetization versus temperature (M-T) curve values were used to determine the blocking temperature and particle size by Néel-Arrhenius law and magnetization versus magnetic field (M-H) curve values were used to calculate the size of magnetic particles by the Langevin equation. The particle sizes were found to be 19 and 10 nm. The MNPs proved to be superparamagnetic by M-H characterization at 10 and 300 K.

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Section: Resultssupporting

confidence: 55%

Particle Size Determination and Magnetic Characterization of Fe3O4 Nanoparticles Using Superconducting Quantum Interference Device Magnetometry

2016

Sensors and Materials

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“…This showed that the surface amount of OH groups on Ce-doped (0.5) Fe 3 O 4 particles was about 2.5 times that of un-doped Fe 3 O 4 particles. Moreover, over 500 • C temperature, all the samples were thermodynamically stable in phase [55].…”

Section: Adsorbent Characterizationmentioning

confidence: 95%

Synthesis of Ce(III)-doped Fe3O4 magnetic particles for efficient removal of antimony from aqueous solution

Joshi

Liu

et al. 2017

Journal of Hazardous Materials

172

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“…5a). 37 The functionalised magnetic nanoparticles also showed similar crystalline peaks (Fig. 5(b-d)).…”

Section: Characterisationmentioning

confidence: 64%

“…37 The thermal stability of MPTMS functionalised magnetic PSSQ nanoparticles showed improved initial degradation properties from $160 C to $260 C due to the presence of a long alkyl chain and the higher boiling point (213-215 C) of MPTMS on the surface of the magnetic nanoparticles, which delayed the initial degradation of water moieties and organic alkyl chains (Fig. 6A(b)).…”

Section: Characterisationmentioning

confidence: 96%

One-pot synthesis of multi-functional magnetite–polysilsesquioxane hybrid nanoparticles for the selective Fe³⁺ and some heavy metal ions adsorption

Nagappan

et al. 2017

RSC Adv.

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Multi-functional magnetite-polysilsesquioxane (PSSQ) hybrid nanoparticles were synthesised in a one-pot approach using ferrous and ferric chlorides and various silane monomers by coprecipitation followed by a surface grafting method. The functional groups, surface properties, and thermal stability of the materials were analyzed using a range of characterisation techniques. Furthermore, the functional magnetic hybrid nanoparticles were used for the adsorption of heavy metal ions. The results suggest that the magnetic PSSQ hybrid nanoparticles have excellent adsorption and selectivity behavior for iron (Fe 3+ ) and some heavy metal ions as individual ions or in mixtures of metal ions. The adsorption kinetics highlighted the excellent adsorption behavior of the functionalised magnetic PSSQ hybrid nanoparticles.On the other hand, the adsorption behavior depends on the type of functional groups present in the materials. These promising and highly desirable magnetic hybrid materials can be used in a wide range of applications.

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Fe3O4 inverse spinal super paramagnetic nanoparticles

Cited by 174 publications

References 32 publications

Particle Size Determination and Magnetic Characterization of Fe3O4 Nanoparticles Using Superconducting Quantum Interference Device Magnetometry

Particle Size Determination and Magnetic Characterization of Fe3O4 Nanoparticles Using Superconducting Quantum Interference Device Magnetometry

Synthesis of Ce(III)-doped Fe3O4 magnetic particles for efficient removal of antimony from aqueous solution

One-pot synthesis of multi-functional magnetite–polysilsesquioxane hybrid nanoparticles for the selective Fe³⁺ and some heavy metal ions adsorption

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Fe3O4 inverse spinal super paramagnetic nanoparticles

Cited by 174 publications

References 32 publications

Particle Size Determination and Magnetic Characterization of Fe3O4 Nanoparticles Using Superconducting Quantum Interference Device Magnetometry

Particle Size Determination and Magnetic Characterization of Fe3O4 Nanoparticles Using Superconducting Quantum Interference Device Magnetometry

Synthesis of Ce(III)-doped Fe3O4 magnetic particles for efficient removal of antimony from aqueous solution

One-pot synthesis of multi-functional magnetite–polysilsesquioxane hybrid nanoparticles for the selective Fe3+ and some heavy metal ions adsorption

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Product

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One-pot synthesis of multi-functional magnetite–polysilsesquioxane hybrid nanoparticles for the selective Fe³⁺ and some heavy metal ions adsorption