Electrochemical Synthesis of Nanocrystalline Ni0.5Zn0.5Fe2O4 Thin Film from Aqueous Sulfate Bath

Saba, A.E.; Elsayed, E. M.; Moharam, M. M.; Rashad, M.M.

doi:10.5402/2012/532168

Cited by 9 publications

(14 citation statements)

References 25 publications

(40 reference statements)

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“…It was observed that with increasing temperature, the lattice parameter, the network microdeformation and the cell volume decrease, and the material density increase, a result that agrees with Saba et al [32] Zhang et al [43] and Mouallem-Bahout et al [31], who calcined Ni-Zn ferrite at 800°C for 240 min, 900°C for 120 min, and 650°C for 900 min, respectively. Figure 2 shows the thermal analysis of Ni-Zn ferrite precursor powders.…”

Section: Resultssupporting

confidence: 84%

“…The reaction of Zn with oxygen and the relationship between the partial Zn and O 2 pressures can be understood by the following expression (Eq. 4) [39]: [32,42,43]. Table 2 shows a tendency of increasing the average crystallite size with increasing calcination temperature.…”

Section: Resultsmentioning

confidence: 94%

“…Saba et al [32] obtained ferrite Ni 0.5 Zn 0.5 Fe 2 O 4 with secondary phases by the electrodeposition method by anodizing with calcination at 800°C for 240 min with average crystallite size of 39 nm and lattice parameter of 8.40 Å . Rahimi et al [13] produced ferrite Ni 0.9 Zn 0.1 Fe 2 O 4 by Sol-gel method calcined at 500°C for 60 min, with single phase with average crystallite size of 30 nm and lattice parameter of 8.41 Å .…”

Section: Resultsmentioning

confidence: 99%

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Rapid calcination of ferrite Ni0.75Zn0.25Fe2O4 by microwave energy

Assis¹,

Bomio²,

Nascimento³

et al. 2014

J Therm Anal Calorim

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Ferrites Ni 0.75 Zn 0.25 Fe 2 O 4 were obtained by polymeric precursor method and calcined in a short time with microwave energy to assess the morphological and microstructural characteristics. Samples were calcined at 500, 650, 800, and 950°C for 30 min in a microwave oven. The resulting powders were characterized by thermal analysis (TG/DSC), X-ray diffraction (XRD), Fourier transform infrared spectrometer, field-emission gun scanning electron microscope (FEG-SEM), and energy-dispersive X-ray spectroscopy. The XRD results showed the formation of single ferrite phase at temperature of 500°C for 30 min. The FEG-SEM analysis showed agglomerated particles with formation of non-dense longitudinal plates, with interparticle porosity and agglomerated fine particles. The rapid calcination by microwave energy demonstrated satisfactory results in relatively low temperature of 500°C for 30 min and appeared to be a promising technique for obtaining nickel-zinc ferrite powders.

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Section: Resultssupporting

confidence: 84%

Section: Resultsmentioning

confidence: 94%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Rapid calcination of ferrite Ni0.75Zn0.25Fe2O4 by microwave energy

Assis¹,

Bomio²,

Nascimento³

et al. 2014

J Therm Anal Calorim

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show abstract

“…Cheaper electrochemical deposition technique has also been demonstrated to be able to fabricate textured barium ferrite films. In comparison, the electrochemical deposition technique provides not only the possibility of using low synthesis temperature but also low cost of starting materials and a high purity of the product yield (Saba et al 2011;Gomes et al 2004;Roy and Verma 2006;Nuli and Qin 2005;Sartale et al 2003Sartale et al , 2004Saba et al 2012). Until now, the electrochemical performance of ferrite thin films at different pH values is not mentioned in detail in the literature.…”

Section: Introductionmentioning

confidence: 99%

The effect of solution pH on the electrochemical performance of nanocrystalline metal ferrites MFe2O4 (M=Cu, Zn, and Ni) thin films

et al. 2015

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Nanocrystalline metal ferrite MFe 2 O 4 (M=Cu, Zn, and Ni) thin films have been synthesized via electrodeposition-anodization process. Electrodeposited (M)Fe 2 alloys were obtained from aqueous sulfate bath. The formed alloys were electrochemically oxidized (anodized) in aqueous (1 M KOH) solution, at room temperature, to the corresponding hydroxides. The parameters controlling the current efficiency of the electrodeposition of (M)Fe 2 alloys such as the bath composition and the current density were studied and optimized. The anodized (M)Fe 2 alloy films were annealed in air at 400°C for 2 h. The results revealed the formation of three ferrite thin films were formed. The crystallite sizes of the produced films were in the range between 45 and 60 nm. The microstructure of the formed film was ferrite type dependent. The corrosion behavior of ferrite thin films in different pH solutions was investigated using open circuit potential (OCP) and potentiodynamic polarization measurements. The open circuit potential indicates that the initial potential E im of ZnFe 2 O 4 thin films remained constant for a short time, then sharply increased in the less negative direction in acidic and alkaline medium compared with Ni and Cu ferrite films. The values of the corrosion current density I corr were higher for the ZnFe 2 O 4 films at pH values of 1 and 12 compared with that of NiFe 2 O 4 and CuFe 2 O 4 which were higher only at pH value 1. The corrosion rate was very low for the three ferrite films when immersion in the neutral medium. The surface morphology recommended that Ni and Cu ferrite films were safely used in neutral and alkaline medium, whereas Zn ferrite film was only used in neutral atmospheres.

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“…The transients have been analyzed by comparing the chronoamperometric curves to the dimensionless theoretical curves for the diffusioncontrolled nucleation and growth of crystals in three dimensions (3D) proposed by Saba et al [20] and Kim et al [29] The expressions for the instantaneous and progressive nucleation are given by the following equations, respectively [28,30] Where imax and tmax are the maximum current density observed at the maximum time tmax. …”

Section: Influence Of Bath Agitationmentioning

confidence: 99%

Synthesis of Nanocrystalline Copper Ferrites by Electrochemical Techniques for Toxic Gas Sensing, Li Ion Battery and Medical Applications

Elsayed

Rashad

Hussein

et al. 2017

Ren. Ener. & Sust. Dev.

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-Nanocrystalline spinel copper ferrite CuFe2O4 thin film has been studied and synthesized via the electrodeposition-anodization process. Electrodeposited CuFe2 alloys were obtained from aqueous sulphate bath. The formed alloys were electro oxidized (anodized) in aqueous (1 M KOH) solution, at room temperature, to the corresponding hydroxides. The anodized CuFe2 alloy films were annealed in air at 400 0 C for 2 h. The parameters controlling of the electrodeposition of CuFe2 alloys such as the bath temperature, agitation and the current density were studied and optimized. The crystal structure, crystallite size and microstructure of the produced ferrites were investigated using X-ray diffraction (XRD), Fourier transform infra red (FT-IR) and scanning electron microscopy (SEM). XRD shows that CuFe2O4 had a spinel structure and the crystallite size of CuFe2O4 phase was ~ 2 nm. SEM micrograph of the formed ferrite particles shows agglomeration structure morphology with a narrow distribution of the particles.

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Electrochemical Synthesis of Nanocrystalline Ni_0.5Zn_0.5Fe₂O₄ Thin Film from Aqueous Sulfate Bath

Cited by 9 publications

References 25 publications

Rapid calcination of ferrite Ni0.75Zn0.25Fe2O4 by microwave energy

Rapid calcination of ferrite Ni0.75Zn0.25Fe2O4 by microwave energy

The effect of solution pH on the electrochemical performance of nanocrystalline metal ferrites MFe2O4 (M=Cu, Zn, and Ni) thin films

Synthesis of Nanocrystalline Copper Ferrites by Electrochemical Techniques for Toxic Gas Sensing, Li Ion Battery and Medical Applications

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