Effect of the preparation method on the structural and catalytic properties of spinel cobalt-iron oxide

Hammiche-Bellal, Yasmina; Djadoun, Amar; Meddour-Boukhobza, Laâldja; Benadda, Amel; Auroux, A.; Berger, Marie‐Hélène; Mernache, Fateh

doi:10.1016/j.matchemphys.2016.04.043

Cited by 19 publications

(10 citation statements)

References 47 publications

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“…The spinel structure in cobalt ferrite is inverse and has various advantages such as good coupling efficiency, high magnetostrictivity and low cost [ 1 ]. Several applications are mentioned for Cobalt ferrite, such as magnetic resonance imaging (MRI), magnetic thermo-drug delivery hyperthermia, catalytic treatment of gases, oxidation of alkanes, drugs delivery, biosensors and gas detectors [ 2 ].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and potent antimicrobial activity of CoFe2O4 nanoparticles under visible light

Gheidari

Mehrdad

Maleki

et al. 2020

Heliyon

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The nanoparticles of Cobalt ferrite are synthesized using polyethylene glycol as a solvent by the solvothermal method in a surfactant-free condition. Nanoparticles that were synthesized were determined by using various techniques such as Diffuse Reflection Spectroscopy (DRS), X-Ray Diffraction (XRD), Scanning Electron Microscope (SEM), and Energy Dispersive X-ray spectroscopy (EDAX). The Scanning electron microscope confirmed the range of spherical nanoparticles in the size of 20–33 nm. An excellent match was observed between the calculated particles size in the X-ray diffraction and electron microscopes results. Furthermore, their antimicrobial efficacy was determined by MIC, MBC, IC50 and disc diffusion method on Gram-negative ( Pseudomonas aeruginosa and Escherichia coli ) and Gram-positive ( Staphylococcus aureus, Bacillus cereus ) bacteria. The results indicated an acceptable bacteriostatic and bactericidal effects of this nanoparticles. Additionally, it was seen that by the increase in the concentration of nanoparticles, their antimicrobial property would increase. Background and objective In recent years, antibacterial materials have found a special place to avoid the overuse of antibiotics. In this study, the antibacterial effects of CoFe 2 O 4 nanoparticles on Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa, and Bacillus cereus, were investigated due to their importance as human pathogens in nosocomial infection. Methodology In this study, the antibacterial effects of CoFe 2 O 4 nanoparticles such as MIC, MBC, IC50, and disc diffusion method were examined. Findings According to the results, CoFe 2 O 4 nanoparticles exhibited potent antibacterial activity against the bacteria that were examined, especially Bacillus cereus . The MBC (Minimum Bactericidal Concentration) of CoFe 2 O 4 nanoparticle on Escherichia coli , Staphylococcus aureus , Pseudomonas aeruginosa , Bacillus cereus was between 0.12-0.48 mg/ml and MIC (Minimum Inhibition Concentration) on these bacteria detected between 0.06-0.24 mg/ml. The least IC50 determined for Bacillus cereus with a concentration of 0.061 mg/ml. Pseudomonas aeruginosa and Bacillus cereus identified as the most resistant and sensitive bacteria in the disc diffusion method, respectively.

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Section: Introductionmentioning

confidence: 99%

Synthesis and potent antimicrobial activity of CoFe2O4 nanoparticles under visible light

Gheidari

Mehrdad

Maleki

et al. 2020

Heliyon

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“…The CoFe 2 O 4 NPs have been synthesized by various methods including coprecipitation, microemulsion, mechanical alloying, hydrothermal, and sol‐gel autocombustion . Among these methods, sol‐gel method offers a flexible approach to obtaining a diverse range of materials without use of expensive processing technologies, such as vacuum methods .…”

Section: Introductionmentioning

confidence: 99%

“…7-10 Based on these excellent properties, CoFe 2 O 4 is used in high frequency magnets, microwave absorbers, magnetic catalysis, magnetic bulk cores, magnetic resonance imaging, and drug delivery. 8,11 The CoFe 2 O 4 NPs have been synthesized by various methods including coprecipitation, [12][13][14][15][16] microemulsion, [17][18][19][20] mechanical alloying, [21][22][23] hydrothermal, [24][25][26][27][28][29][30] and sol-gel autocombustion. [31][32][33][34][35] Among these methods, sol-gel method offers a flexible approach to obtaining a diverse range of materials without use of expensive processing technologies, such as vacuum methods.…”

Section: Introductionmentioning

confidence: 99%

The effect of agarose content on the morphology, phase evolution, and magnetic properties of CoFe₂O₄ nanoparticles prepared by sol‐gel autocombustion method

Rouhani

Esmaeil‐Khanian

Davar

et al. 2017

Int J Applied Ceramic Tech

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Hard‐magnetic CoFe2O4 nanoparticles were produced with the sol‐gel autocombustion route using agarose and citric acid as a neutral organic gel and combustion agent. For this purpose, the obtained gel is annealed at 800°C for 3 hours and then the spinel structure of the samples was confirmed by X‐ray diffraction (XRD). In addition, the existence of metal‐oxygen complexes in the gel and nanoparticles was investigated by Fourier transformation infrared (FTIR) spectra. Furthermore, FESEM images showed that semispherical and rod‐like particles were obtained by variation in agarose contents. For the rod‐like sample with 2.5 g agarose, the saturation magnetization and coercivity were measured equal to 71.7 emu/g and 10076.84 Oe, respectively.

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“…Among them, spinel oxides of transition metals have shown very good catalytic activity in oxidation reactions. These materials have been identified as active phases in various processes, as in oxidation of 2‐propanol and toluene, oxidation of methane, deep oxidation of unsaturated hydrocarbons and ethanol combustion in recent studies …”

Section: Introductionmentioning

confidence: 99%

Characterization and Catalytic Properties of Ni‐Fe Spinel Catalysts for Total Oxidation of Ethanol

et al. 2019

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This paper deals with the study of the reducibility of NiÀ Fe spinel oxides prepared by co-precipitation and hydrothermal methods with NaOH or ammonia and their behavior in ethanol combustion. The reducibility was investigated by X-ray photoelectron spectroscopy (XPS) after pretreatment under H 2 at 400°C. Depending on the synthesis method, structural properties (X-ray powder diffraction (XRD) and Raman analysis), the surface area (BET), particle size (Rietveld refinement), as well as the surface Ni/Fe atomic ratio (XPS) and the behavior upon reduction varied. The best performances were obtained for hydrothermal conditions with a total conversion achieved at ∼ 300°C. Ni 2 + species seem to play a significant role in complete oxidation of ethanol; they were identified as the active species. A good correlation between structural, textural, reducibility and catalytic activity was established.

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Effect of the preparation method on the structural and catalytic properties of spinel cobalt-iron oxide

Cited by 19 publications

References 47 publications

Synthesis and potent antimicrobial activity of CoFe2O4 nanoparticles under visible light

Synthesis and potent antimicrobial activity of CoFe2O4 nanoparticles under visible light

The effect of agarose content on the morphology, phase evolution, and magnetic properties of CoFe₂O₄ nanoparticles prepared by sol‐gel autocombustion method

Characterization and Catalytic Properties of Ni‐Fe Spinel Catalysts for Total Oxidation of Ethanol

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Effect of the preparation method on the structural and catalytic properties of spinel cobalt-iron oxide

Cited by 19 publications

References 47 publications

Synthesis and potent antimicrobial activity of CoFe2O4 nanoparticles under visible light

Synthesis and potent antimicrobial activity of CoFe2O4 nanoparticles under visible light

The effect of agarose content on the morphology, phase evolution, and magnetic properties of CoFe2O4 nanoparticles prepared by sol‐gel autocombustion method

Characterization and Catalytic Properties of Ni‐Fe Spinel Catalysts for Total Oxidation of Ethanol

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The effect of agarose content on the morphology, phase evolution, and magnetic properties of CoFe₂O₄ nanoparticles prepared by sol‐gel autocombustion method