Synthesis and characterization of nanoparticles with magnetic core and photocatalytic shell: Anatase TiO2–NiFe2O4 system

Rana, Subhasis; Srivastava, R. S.; Sorensson, M.M.; Misra, R.D.K.

doi:10.1016/j.mseb.2005.02.043

Cited by 225 publications

(55 citation statements)

References 32 publications

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“…The location of the divalent cations (Ni 2+ ) in the crystal structure is almost homologous to the magnetic properties of the nickel ferrite. However, nickel ferrite shows super-paramagnetic nature and it has diverse applications such as gas-sensor, magnetic fluids, catalysts, magnetic storage systems, photomagnetic materials, site-specific drug delivery, magnetic resonance imaging and microwave devices [3][4][5][6][7] . Various methods such as hydrothermal method 8 , co-precipitation method 9 , gelassistant hydrothermal route 10 , thermolysis 11 , wet chemical co-precipitation technique 12 , self-propagating 13 , have been developed to prepare nanocrystallite nickel ferrite.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of Nickel ferrite Nanoparticles via Co-precipitation Method

2018

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Nickel ferrite (NiFe 2 O 4 ) nanoparticles were synthesized using co-precipitation method. The X-ray diffraction (XRD) pattern was used to determine the structure of NiFe 2 O 4 nanoparticles. The presence of NiFe 2 O 4 nanoparticles was confirmed by the FT-IR spectrum. The details of the surface morphology of NiFe 2 O 4 nanoparticles were obtained by Scanning Electron Microscopic analysis. The particle size of the NiFe 2 O 4 nanoparticles could be determined by means of Transmission Electron Microscopy. This work aimed at the investigation of the dielectric properties such as the dielectric loss and the dielectric constant of NiFe 2 O 4 nanoparticles at varied frequencies and temperatures. In addition, the magnetic properties of the NiFe 2 O 4 nanoparticles were studied.

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Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of Nickel ferrite Nanoparticles via Co-precipitation Method

2018

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“…This presents a major drawback to the application of the hybrid catalyst for treating wastewaters. To overcome the problem of catalyst recovery, a magnetic photocatalyst, comprising a magnetic core coated with photoactive titanium oxide layer, has been developed [7][8][9][10][11][12][13][14][15][16][17][18][19]. The fabrication of the magnetic photocatalyst is based on the magnetic separation technique, providing a solution to the solid-liquid separation problem of the photocatalyst particles from the suspended photoreactors.…”

Section: Introductionmentioning

confidence: 99%

Sonochemical synthesis and characterization of magnetic separable Fe₃O₄–TiO₂nanocomposites and their catalytic properties

Jiang

Zhang

Gong³

et al. 2010

International Journal of Smart and Nano Materials

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A novel sonochemical method is described for the preparation of Fe 3 O 4 -TiO 2 photocatalysts in which nanocrystalline titanium dioxide particles are directly coated onto a magnetic core. The Fe 3 O 4 nanoparticles were partially embedded in TiO 2 agglomerates. TiO 2 nanocrystallites were obtained by hydrolysis and condensation of titanium tetraisopropyl in the presence of ethanol and water under high-intensity ultrasound irradiation. This method is attractive since it eliminated the high-temperature heat treatment required in the conventional sol-gel method, which is important in transforming amorphous titanium dioxide into a photoactive crystalline phase. In comparison to other methods, the developed method is simple, mild, green and efficient. The magnetization hysteresis loop for Fe 3 O 4 -TiO 2 nanocomposites indicates that the hybrid catalyst shows superparamagnetic characteristics at room temperature. Photocatalytic activity studies confirmed that the as-prepared nanocomposites have high photocatalytic ability toward the photodegradation of RhB solution. Furthermore, the photodecomposition rate decreases only slightly after six cycles of the photocatalysis experiment. Thus, these Fe 3 O 4 -TiO 2 nanocomposites can be served as an effective and conveniently recyclable photocatalyst.

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“…However, we can facilitate this removal if composite particles consisting of a magnetic core and a photocatalytic shell are fabricated. In previous papers [21,22], we reported the synthesis of composite nanoparticles consisting of a photocatalytic titania shell and a nickel ferrite magnetic (NiFe 2 O 4 ) core. The synthesis process involved a combination of the reverse micelle technique and a chemical precipitation process.…”

Section: Introductionmentioning

confidence: 99%

Antimicrobial function of Nd3+-doped anatase titania-coated nickel ferrite composite nanoparticles: A biomaterial system

et al. 2006

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Synthesis and characterization of nanoparticles with magnetic core and photocatalytic shell: Anatase TiO2–NiFe2O4 system

Cited by 225 publications

References 32 publications

Preparation and Characterization of Nickel ferrite Nanoparticles via Co-precipitation Method

Preparation and Characterization of Nickel ferrite Nanoparticles via Co-precipitation Method

Sonochemical synthesis and characterization of magnetic separable Fe₃O₄–TiO₂nanocomposites and their catalytic properties

Antimicrobial function of Nd3+-doped anatase titania-coated nickel ferrite composite nanoparticles: A biomaterial system

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Synthesis and characterization of nanoparticles with magnetic core and photocatalytic shell: Anatase TiO2–NiFe2O4 system

Cited by 225 publications

References 32 publications

Preparation and Characterization of Nickel ferrite Nanoparticles via Co-precipitation Method

Preparation and Characterization of Nickel ferrite Nanoparticles via Co-precipitation Method

Sonochemical synthesis and characterization of magnetic separable Fe3O4–TiO2nanocomposites and their catalytic properties

Antimicrobial function of Nd3+-doped anatase titania-coated nickel ferrite composite nanoparticles: A biomaterial system

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Sonochemical synthesis and characterization of magnetic separable Fe₃O₄–TiO₂nanocomposites and their catalytic properties