Synthesis and magnetic properties of inverted core-shell polyaniline-ferrite composite

Donescu, Dan; Fierăscu, Radu Claudiu; Ghiurea, Marius; Mănăilă-Maximean, Doina; Nicolae, Cristian Andi; Şomoghi, Raluca; Spataru, Catalin Ilie; Stănică, Nicolae; Rădiţoiu, Valentin; Vasile, Eugeniu

doi:10.1016/j.apsusc.2017.04.061

Cited by 23 publications

(13 citation statements)

References 42 publications

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“…For the magnetite sample, the thermal analysis reveals a mass loss up to 150°C of 3.78% (Table 1); the loss is attributed to the evaporation of water and OH groups from the surface of the sample. The weight loss recorded in the two other temperature ranges are in good concordance with literature data and the results previously obtained by our group on magnetite samples [15,20].…”

Section: Resultssupporting

confidence: 91%

“…From the presented data in Table 2 it can be observed a slight decrease of the saturation magnetization value (Ms) obtained for the composite (from 48.04 emu/g to 41.3 emu/ g), both much higher compared with our previous results [15]. The relative preservation of the magnetic properties makes the composites available for magnetic separations in environmental applications.…”

Section: Resultsmentioning

confidence: 54%

“…[19]. The size of the magnetite particles determined using the equation (1) [15], from the values of the diffraction peak corresponding to the (311) plane, was found to be approx. 10.07 nm.…”

Section: Resultsmentioning

confidence: 99%

“…As the magnetic character of the adsorbent is of great importance for the easy removal from aqueous solutions, magnetization versus magnetic field strength were performed on a Lake Shore's fully integrated Vibrating Sample Magnetometer system 7404 at room temperature, using nitrogen gas, in variable magnetic field [0 -21,700] Oe, resolution of magnetization: 0.1×10 -6 emu; step control of applied magnetic field: 70 mOe; moment stability: ≥± 0.05% of full scale/day for fixed coil, constant field and temperature; resolution of magnetic field intensity: 3 ppm resolution; standard procedures for periodical calibration based on NIST standards (SRM 772a, SRM 762, SRM 2853) [15].…”

Section: Methodsmentioning

confidence: 99%

“…The inorganic/organic magnetic composites used as adsorbents were building a chitosan shell over a magnetite core. The magnetite was obtained using a co-precipitation method from chloride precursors, after a recipe previously described [15]. The adsorbent magnetic composites were obtained by grafting a layer of chitosan (CS) over the magnetite.…”

Section: Experimental Part Synthesis Of the Adsorbent Materialsmentioning

confidence: 99%

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Facile Removal of Pesticides from Aqueous Solutions Using Magnetic Nanocomposites I. Synthesis and characterization of the adsorbent material

Fierăscu¹,

Şomoghi²,

Nicolae³

et al. 2019

Rev.Chim.

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An inorganic/organic magnetic nanocomposite was synthesized and analytically characterized using X-ray fluorescence, X-ray diffraction, transmission electron microscopy and thermal analysis. The evaluation of the magnetic properties revealed that both the magnetite and the magnetite/chitosan nanocomposite are superparamagnetic with a paramagnetic component, having the saturation magnetization values of 48.04 emu/g, and 41.3 emu/g, respectively. The synthesized material is indented for the adsorption of two known commercial-available pesticides (active ingredients deltamethrin and thiamethoxam, respectively) from aqueous solutions.

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Section: Resultssupporting

confidence: 91%

Section: Resultsmentioning

confidence: 54%

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Experimental Part Synthesis Of the Adsorbent Materialsmentioning

confidence: 99%

See 3 more Smart Citations

Facile Removal of Pesticides from Aqueous Solutions Using Magnetic Nanocomposites I. Synthesis and characterization of the adsorbent material

Fierăscu¹,

Şomoghi²,

Nicolae³

et al. 2019

Rev.Chim.

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Polymer–spinel ferrite composite containing nickel, magnesium, and nickel–magnesium ions: Structural, magnetic, electrical, and thermal stability properties

et al. 2018

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Firstly, three different nano ferrites (MgFe2O4, NiFe2O4, and Ni0.5Mg0.5Fe2O4) were synthesized using a combustion method. Secondly, polyaniline composites containing small amounts of those nano ferrites were prepared using in situ chemical polymerization method. Ferrite samples were characterized using X‐ray diffraction (XRD) and Fourier transform infrared spectroscopy (FT‐IR) analyses. XRD analysis of ferrites exhibited well‐resolved broad peaks, which confirm the polycrystalline and mono‐phasic nature. FT‐IR confirmed the spinel structure of these ferrites. Polymer nano ferrites composites were also characterized using XRD, FT‐IR, thermal analysis (TG and DTA), and transmission electron microscope (TEM). Also, electrical (AC conductivity, dielectric constant, dielectric loss, and complex impedance) and magnetic properties were investigated for all nano composite samples. XRD analysis confirmed the formation of polymer nano composites. Moreover, the absorption bands of polyaniline were shifted in the presence of the three different ferrites, confirming the presence of interactions between the different phases in all composites. Additionally, different thermal stability behavior of nano composite samples was observed, which may be attributed to the nano ferrite type and the physical interactions nature with polymer matrix. The sample containing nano magnesium ferrite showed the core–shell structure by TEM. The same sample exhibited the highest values of both AC conductivity (1.01 × 10−4 ohm−1 cm−1) and magnetization saturation (3.38 emu/g) at room temperature. In comparison with other similar composites containing large amounts of the same ferrite, the investigated sample showed a good magnetization saturation value and thermal stability behavior.

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Investigation of Magnetic Electrodes in Conducting Polymeric Materials: Electrochemical Properties of a Fullerene[C₆₀]‐Pd Polymer and Iron Oxide Magnetic Nanocomposite

Wysocka‐Zolopa,

Wojtulewski,

Basa

et al. 2023

Macromol. Rapid Commun.

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A composite of iron oxide magnetic nanoparticles and coordination fullerene polymer (C60Pd3)n is formed by chemical deposition of spherical polymer nanoparticles on iron oxide magnetic nanoparticles in benzene containing C60 and Pd(0) complex. The composition of the composite can be controlled by the amount of magnetite and concentration of polymerization precursors as well as the time of polymerization. The magnetic composite material Fe3O4‐γFe2O3/(C60Pd3)n is used as a model system to investigate its deposition on a magnetic electrode and its electrochemical properties. The iron oxide magnetic nanoparticles ensure both the magnetic activity of the composite and its nanostructured morphology. Both of these factors are responsible for the enhancement of the electrochemical activity of the polymer phase forming the composite in comparison to the pure polymer material deposited on the same magnetic electrode. In the magnetic field of the electrode, the composite undergoes permanent and strong bonding with the surface of the electrode. The nanostructured morphology of the Fe3O4‐γFe2O3/(C60Pd3)n composite also provides very good capacitive properties.

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Synthesis and magnetic properties of inverted core-shell polyaniline-ferrite composite

Cited by 23 publications

References 42 publications

Facile Removal of Pesticides from Aqueous Solutions Using Magnetic Nanocomposites I. Synthesis and characterization of the adsorbent material

Facile Removal of Pesticides from Aqueous Solutions Using Magnetic Nanocomposites I. Synthesis and characterization of the adsorbent material

Polymer–spinel ferrite composite containing nickel, magnesium, and nickel–magnesium ions: Structural, magnetic, electrical, and thermal stability properties

Investigation of Magnetic Electrodes in Conducting Polymeric Materials: Electrochemical Properties of a Fullerene[C₆₀]‐Pd Polymer and Iron Oxide Magnetic Nanocomposite

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Synthesis and magnetic properties of inverted core-shell polyaniline-ferrite composite

Cited by 23 publications

References 42 publications

Facile Removal of Pesticides from Aqueous Solutions Using Magnetic Nanocomposites I. Synthesis and characterization of the adsorbent material

Facile Removal of Pesticides from Aqueous Solutions Using Magnetic Nanocomposites I. Synthesis and characterization of the adsorbent material

Polymer–spinel ferrite composite containing nickel, magnesium, and nickel–magnesium ions: Structural, magnetic, electrical, and thermal stability properties

Investigation of Magnetic Electrodes in Conducting Polymeric Materials: Electrochemical Properties of a Fullerene[C60]‐Pd Polymer and Iron Oxide Magnetic Nanocomposite

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Product

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Investigation of Magnetic Electrodes in Conducting Polymeric Materials: Electrochemical Properties of a Fullerene[C₆₀]‐Pd Polymer and Iron Oxide Magnetic Nanocomposite