CTAB-assisted hydrothermal synthesis of NiFe2O4 and its magnetic characterization

Baykal, A.; Kasapoğlu, Nermin; Köseoğlu, Yüksel; Toprak, Muhammet S.; Bayrakdar, Harun

doi:10.1016/j.jallcom.2007.10.041

Cited by 165 publications

(55 citation statements)

References 44 publications

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“…where, 'd' is the average crystallite size, 'k' is the Scherrer's constant (0.9), 'b' is the full width at half maxima (FWHM), 'k' is the X-ray wavelength (1.54 Å ) and 'h' is the Bragg angle [29,30]. The average crystallite size of NFOTP and NFOCP nanoparticles calculated is given in Table 2.…”

Section: Structural and Morphological Analysismentioning

confidence: 99%

Micro-structural analysis of NiFe2O4 nanoparticles synthesized by thermal plasma route and its suitability for BSA adsorption

Bhosale

Kanhe

Bhoraskar

et al. 2015

J Mater Sci: Mater Med

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The paper presents the experimental studies pertaining to the adsorption of bovine serum albumin (BSA) on the nanoparticles of nickel ferrite (NiFe2O4) with a view of correlating the adsorption properties to their microstructure and zeta potentials. Physical properties of two kinds of nickel ferrites, one synthesized by thermal plasma route and the other by chemical co-precipitation method, are compared. Maximum adsorption (231.57 μg/mg) of BSA onto nickel ferrite nanoparticles, at body temperature (37 °C) was observed at pH-value of 5.58 for the thermal plasma synthesized particles showing its higher adsorption capacity than those synthesized by wet chemical means (178.71 μg/mg). Under the same physical conditions the value of zeta potential, obtained for the former, was higher than that of the latter over a wide range of pH values (3.64-9.66). This is attributed to the differences in the specific surface energies of the two kinds of nanoparticles arising from the degree of crystallinity. The paper presents the experimental evidence for the single crystalline nature of the individual nanoparticles, with mean size of 32 nm, for the thermal plasma synthesized particles as evidenced from the high resolution transmission electron microscopy and electron diffraction analysis. The measurements also reveal the poor crystalline morphology in the chemically prepared particles (mean size of 28 nm) although the X-ray diffraction patterns are not much different. The atomic force microscopy images confirm that the surfaces of plasma synthesized nanoparticles possesses higher surface roughness than that of chemically synthesized one. Presence of adsorbed protein was confirmed by vibrational spectroscopy. The Langmuir adsorption model is found to fit into the experimental data better than the Freundlich adsorption model.

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Section: Structural and Morphological Analysismentioning

confidence: 99%

Micro-structural analysis of NiFe2O4 nanoparticles synthesized by thermal plasma route and its suitability for BSA adsorption

Bhosale

Kanhe

Bhoraskar

et al. 2015

J Mater Sci: Mater Med

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“…1(a)) of the prepared samples exhibited the reflection planes (1 1 1), (2 2 0), (3 1 1), (2 2 2), (4 0 0), (4 2 2), (5 1 1), (4 4 0), (620), (533) and (622) that indicate the presence of the spinel cubic structure matching well with the powder diffraction File No. 10-325 [29,30]. The mean size of the crystallites was estimated from the diffraction pattern by line profile fitting method using Eq.…”

Section: Construction Of Hrp/nife 2 O 4 /Chitosan Nanobiocompositementioning

confidence: 99%

“…Among magnetic nanoparticles, ferrites are a broad class of complex magnetic oxides of considerable technological importance [19,20]. Nickel ferrite (NiFe 2 O 4 ), with an inverse spinel structure shows good biocompatibility, noncytotoxicity, easy preparation and also ferromagnetism that originates from magnetic moment of anti-parallel spins between Fe 3+ ions at tetrahedral sites and Ni 2+ ions at octahedral sites [21,22]. Due to their large surface-tovolume ratio, high surface reaction activity, high catalytic efficiency and strong adsorption ability, nanomaterials are utilized for biosensor applications.…”

Section: Introductionmentioning

confidence: 99%

Development of an Amperometric Hydrogen Peroxide Biosensor based on the Immobilization of Horseradish Peroxidase onto Nickel Ferrite Nanoparticle-Chitosan Composite

et al. 2011

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Abstract:Nickel ferrite (NiFe2O4) nanoparticles have been dispersed in chitosan solution in order to fabricate nanocomposite films. Horseradish peroxidase (HRP) has been immobilized onto this chitosan-NiFe2O4 nanocomposite film via physical adsorption. The size of the NiFe2O4 nanoparticles has been estimated using X-ray diffraction pattern and scanning electron microscopy (SEM) to be 40±9 nm. The chitosan-NiFe2O4 nanocomposite film and HRP/chitosan-NiFe2O4 bioelectrode have been characterized using SEM technique. The HRP/chitosan-NiFe2O4 nanocomposite bioelectrode has a response time of 4 s, linearity as 0.3 to 12 mM of H2O2, sensitivity as 22 nA/mM. The effects of pH and the temperature of the immobilized HRP electrode have also been studied.

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“…The characteristic behaviors of NiFe 2 O 4 are connected with the structure and microstructural building blocks of the nanoparticles which are very sensitive to the applied synthesis routes. The ferrite nanoparticles have been developed by several chemical and physical techniques which include sonochemical reactions [22], solid state reactions [23], microwave plasma [24], high temperature self-propagation [25], solvothermal synthesis [26], sol-gel methods [27], chemical co-precipitation [28], hydrothermal method [29], etc. Besides, sol-gel wet chemical, sol-gel autocombustion and co-precipitation methods are very favorable [30][31][32].…”

Section: Introductionmentioning

confidence: 99%

Influence of preparation method on structural, optical and magnetic properties of nickel ferrite nanoparticles

Khan

Javed

Khan

et al. 2017

Materials Science-Poland

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Nanocrystalline NiFe 2 O 4 particles were prepared by conventional sol-gel, citrate-nitrate sol-gel combustion and coprecipitation methods. The synthesized samples were annealed at 1000°C for two hours and structural, chemical, morphological, optical and magnetic properties of nickel ferrite were investigated. The structural properties were investigated by X-ray diffraction (XRD) technique which confirmed the formation of single phase NiFe 2 O 4 particles derived by the three methods. The chemical properties were analyzed by Fourier transform infrared (FT-IR) spectroscopy which confirmed the corresponding vibration modes in the samples. The optical properties were studied by UV-Vis spectroscopy. The morphological study of the as-synthesized samples was carried out by scanning electron microscopy (SEM). SEM images showed the agglomerated nanoparticles of NiFe 2 O 4 . The magnetic properties were investigated by vibrating sample magnetometer (VSM), which showed that the calcined samples exhibited typical magnetic behavior.

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CTAB-assisted hydrothermal synthesis of NiFe2O4 and its magnetic characterization

Cited by 165 publications

References 44 publications

Micro-structural analysis of NiFe2O4 nanoparticles synthesized by thermal plasma route and its suitability for BSA adsorption

Micro-structural analysis of NiFe2O4 nanoparticles synthesized by thermal plasma route and its suitability for BSA adsorption

Development of an Amperometric Hydrogen Peroxide Biosensor based on the Immobilization of Horseradish Peroxidase onto Nickel Ferrite Nanoparticle-Chitosan Composite

Influence of preparation method on structural, optical and magnetic properties of nickel ferrite nanoparticles

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