Preparation of ZnFe2O4/SiO2 and CdFe2O4/SiO2 nanocomposites by sol–gel method

Plocek, Jiřı́; Hutlová, Alzbeta; Nižňanský, Daniel; Buršík, J.; Rehspringer, Jean‐Luc; Mička, Zdeněk

doi:10.1016/s0022-3093(02)01595-8

Cited by 47 publications

(15 citation statements)

References 7 publications

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“…Moreover, is observed that the nanoparticles present a sphericallike morphology. Plocek et al, prepared nanoparticles of CdFe2O4@SiO2, via sol gel methodology, with average size of 3.4 nm, and the TEM profile obtained is very similar to those obtained in this work 29 . The nanoparticles were synthesized by coprecipitation method and was used a surfactantfree synthesis in order to avoid remaining organic compounds, that can induce bubbles during the synthesis of the glass and react with the Pt-Au crucible during the melting process.…”

Section: Cdfe2o4 and Cdsinpssupporting

confidence: 83%

“…Cadmium ferrite nanoparticles (CdFe2O4) have been studied due to excellent chemical stability and applicability in magneto-optical devices and semiconductor sensors [25][26][27][28] . These nanoparticles can be further functionalized by adding layers of silica, which can act as a protective layer of the nanoparticles during the melting [29][30][31] .…”

Section: Introductionmentioning

confidence: 99%

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Incorporation of CdFe2O4SiO2 nanoparticles in SbPO4-ZnO-PbO glasses by melting quenching process

et al. 2018

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The development of glasses containing nanoparticles dispersed homogeneously with controlled size and optimum parameters for functionality is a challenge. Glasses in the ternary system 60SbPO4-30ZnO-10PbO containing CdFe2O4-SiO2 nanoparticles were studied. The CdFe2O4 nanoparticles were synthesized by the coprecipitation method and the average size was 3.9 nm and then, they were protected by a silica layer. The nanoparticles were mixed with the glass precursors and transformed into glasses by melt-quenching method. Thermal and structural properties were evaluated by differential scanning calorimetry, Raman spectroscopy, scanning electronic microscopy and transmission electron microscopy. While the optical properties were studied by M-Lines spectroscopy and UV-VIS spectroscopy. The glass samples obtained were completely transparent, with amber color and showed no sign of crystallization according to the techniques used. Scanning and transmission electron microscopy confirm that the methodology used for the incorporation of nanoparticles was efficient. The nanoparticle protection methodology prior to incorporation into glasses may contribute towards the development of glasses containing nanoparticles useful for magneto-optics devices.

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Section: Cdfe2o4 and Cdsinpssupporting

confidence: 83%

Section: Introductionmentioning

confidence: 99%

Incorporation of CdFe2O4SiO2 nanoparticles in SbPO4-ZnO-PbO glasses by melting quenching process

et al. 2018

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“…The nanocrystalline ferrite has been synthesized by various methods such as coprecipitation, sol–gel, solvothermal, hydrothermal, deposition–precipitation, electrochemical, high‐temperature, solid‐state reactions, wet‐chemical synthesis, and auto‐combustion methods .…”

Section: Introductionmentioning

confidence: 99%

Structural, Optical, and Isothermic Studies of CuFe₂O₄ and Zn‐Doped CuFe₂O₄ Nanoferrite as a Magnetic Catalyst for Photocatalytic Degradation of Direct Red 264 Under Visible Light Irradiation

Kar

Fazaeli

Manteghi

et al. 2019

Env Prog and Sustain Energy

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Cu and Zn‐doped Cu ferrites were synthesized by sol–gel auto‐combustion method. The samples were characterized by XRD, SEM, EDX, VSM, FT‐IR, and DRS methods. Powder XRD analysis and FT‐IR spectroscopy confirmed the formation of ferrites spinel phase. The crystallite sizes were calculated using Scherrer's equation. The morphologies and sizes of the synthesized nanoparticles have been observed by scanning electron microscopy. The saturation magnetization (MS) is obtained from VSM data. The energy band gaps were calculated from UV–DRS absorption data. Removal of Direct Red 264 was carried out by CuFe2O4 and Zn‐doped CuFe2O4 as catalysts under a visible lamp. The kinetic and isothermic analysis of photocatalytic degradation was studied. © 2019 American Institute of Chemical Engineers Environ Prog, 38:e13109, 2019

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“…Sol-gel method is preferred because of its simplicity, cost effectiveness, room temperature deposition and elimination of the need for vacuum apparatus. Plocek et al [12] reported the preparation of ZnFe 2 O 4 /SiO 2 nano-composites by the sol-gel method. Veith et al [13] studied the synthesis of nano-crystalline ZnFe 2 O 4 and zinc-iron oxide composites by the sol-gel method.…”

Section: Introductionmentioning

confidence: 99%

Fabrication and Characterization of ZnFe<sub>2</sub>O<sub>4</sub> Thin Film Based Metal-Insulator-Semiconductor Capacitors

Vishwas

Rao

Raichur

2015

ILCPA

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Thin films of zinc ferrite (ZnFe 2 O 4 ) were deposited on glass, quartz and p-silicon (100) substrates by the sol-gel method. The structural properties of the films were studied using x-ray diffraction (XRD), scanning electron microscopy (SEM) and atomic force microscopy (AFM). The XRD data show the film having a spinel structure and the crystalline phase exists after annealing at 500 o C for 2 h in air. The SEM and AFM images show the nano-crystalline nature of the films. The optical transmittance decreased with increase of annealing temperature. The optical band gap energy was estimated at different annealing temperatures and found to be 2.71 eV after annealing at 400 o C. The metal-insulator-semiconductor (MIS) capacitors were fabricated using ZnFe 2 O 4 films on p-silicon (100) substrates. The capacitance-voltage (C-V), dissipation-voltage (D-V) and currentvoltage (I-V) characteristics were studied. The dependence of dielectric constant on annealing temperature and signal frequency was analyzed. The variation of current density and resistivity of the ZnFe 2 O 4 films with annealing temperature was also explored.

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Preparation of ZnFe2O4/SiO2 and CdFe2O4/SiO2 nanocomposites by sol–gel method

Cited by 47 publications

References 7 publications

Incorporation of CdFe2O4SiO2 nanoparticles in SbPO4-ZnO-PbO glasses by melting quenching process

Incorporation of CdFe2O4SiO2 nanoparticles in SbPO4-ZnO-PbO glasses by melting quenching process

Structural, Optical, and Isothermic Studies of CuFe₂O₄ and Zn‐Doped CuFe₂O₄ Nanoferrite as a Magnetic Catalyst for Photocatalytic Degradation of Direct Red 264 Under Visible Light Irradiation

Fabrication and Characterization of ZnFe<sub>2</sub>O<sub>4</sub> Thin Film Based Metal-Insulator-Semiconductor Capacitors

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Preparation of ZnFe2O4/SiO2 and CdFe2O4/SiO2 nanocomposites by sol–gel method

Cited by 47 publications

References 7 publications

Incorporation of CdFe2O4SiO2 nanoparticles in SbPO4-ZnO-PbO glasses by melting quenching process

Incorporation of CdFe2O4SiO2 nanoparticles in SbPO4-ZnO-PbO glasses by melting quenching process

Structural, Optical, and Isothermic Studies of CuFe2O4 and Zn‐Doped CuFe2O4 Nanoferrite as a Magnetic Catalyst for Photocatalytic Degradation of Direct Red 264 Under Visible Light Irradiation

Fabrication and Characterization of ZnFe<sub>2</sub>O<sub>4</sub> Thin Film Based Metal-Insulator-Semiconductor Capacitors

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Structural, Optical, and Isothermic Studies of CuFe₂O₄ and Zn‐Doped CuFe₂O₄ Nanoferrite as a Magnetic Catalyst for Photocatalytic Degradation of Direct Red 264 Under Visible Light Irradiation