Microwave combustion synthesis of zinc substituted nanocrystalline spinel cobalt ferrite: Structural and magnetic studies

Ubaidullah, Mohd; Kennedy, L. John; Aruldoss, Udaya; Pasha, Sk. Khadeer; Vijaya, J. Judith; Dunn, Steve

doi:10.1016/j.mssp.2015.06.002

Cited by 72 publications

(16 citation statements)

References 42 publications

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“…The micrograph of co-precipitate method shows that nanoparticles are formed on the other hand the micrograph of hydrothermal method displays that agglomeration formation of porous nanoparticles is formed. The agglomeration in the nanoparticles is formed may be due to interfacial surface tension [50]. TEM image of the hydrothermal method synthesized LaCeFe 2 O 4 nanoparticles are shown in g .3(c).…”

Section: Resultsmentioning

confidence: 99%

Electrochemical Performance of Lanthanum Cerium Ferrite Nanoparticles for Supercapacitor Applications

Raza

Nabi

Malik

et al. 2021

Preprint

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Lanthanum cerium ferrite nanoparticles has been synthesized for the first time via hydrothermal and co-precipitation method. The structural and morphological study of the nanoparticles have been examined by using X-ray powder diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and energy dispersive x-ray spectroscopy (EDX). The electrochemical study of J1 and J2 electrodes have been examined using three electrode system in 6 M KOH electrolyte using cyclic voltammetry (CV), galvanostatic charging-discharging (GCD) and electrochemical impendence spectroscopy (EIS). The highest specific capacitance of 1195 F/g has been obtained at a scan rate of 10 mV/s from hydrothermal synthesis nanomaterial electrode (J2) and long cycling life 92.3% retention after 2000th cycles. Furthermore, the energy density and power density of the J2 electrode at a current density of 5 A/g was 59 Wh/kg and 9234 W/kg respectively. Hence, the fabricated J2 electrode is a favorable candidate for super-capacitor applications.

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Section: Resultsmentioning

confidence: 99%

Electrochemical Performance of Lanthanum Cerium Ferrite Nanoparticles for Supercapacitor Applications

Raza

Nabi

Malik

et al. 2021

Preprint

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“…Ali dkk. juga mengkonfirmasi bahwa penambahan zinc pada cobalt ferrite secara signifikan meningkatkan nilai parameter kisi dan densitas [8]. Hassadee juga melakukan penelitian terkait cobalt zinc ferrite dan menyatakan bahwa parameter kisi meningkat seiring dengan meningkatnya konsentrasi zinc [8].…”

Section: Pendahuluanunclassified

“…Faktor yang diduga mempengaruhi ukuran kristalit pada cobalt zinc ferrite adalah strain [7]. Kecenderungan kation Zn 2+ (0,60Å) untuk menempati kisi tetrahedal (A), memaksa Fe 3+ (0,65 Å) untuk berpindah ke kisi Octahedral (B) sehingga membentuk vacancy karena adanya perbedaan jari-jari ionic [8]. Vacancy inilah yang diduga menyebabkan munculnya strain.…”

Section: Gambar 2 Pengaruh Konsentrasi Zinc Terhadap Ukuran Kristaliunclassified

Analisis Perubahan Struktur Kristal dan Distribusi Kation Cobalt Ferrite Akibat Subtitusi Zinc

Kiswanto

2020

JIIF

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Sampel cobalt zinc ferrite telah berhasil disintesis menggunakan metode kopresipitasi dengan memvariasikan konsentrasi zinc yaitu 0%, 25%, 50%, 75% dan 90%. Struktur krsital, gugus fungsi dan morfologi dikarakterisasi secara detail dengan Xray Diffractometer (XRD), Transmission Electron Microscope (TEM), and Fourier Transform Infrared (FTIR). Distribusi kation dianalisis secara teori dan didukung dengan hasil penelitian sebelumnya. Ukuran kristalit diestimasi dengan metode Scherrer yang ditemukan menurun dari 10,8 nm-9,5 nm, sedangkan parameter kisi ditemukan meningkat dari 8,19-8,26 Å seiring dengan meningkatnya konsentrasi zinc. Distribusi kation dipengaruhi oleh subtitusi zinc akibat preferensi kation menempati sub ruang (kisi) tertentu. Karakterisasi TEM menunjukkan ukuran butir pada sampel beragam dan mengalami aglomerasi.

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“…The microwave energy is an inner one equipment of heat energy generation and transformation. In result, the morphology, shape, crystallite size, and other properties are almost variation by changed microwave energy as heating source [14].…”

Section: Introductionmentioning

confidence: 99%

“…Due to the widespread applicability of ferrites, different synthesis path has been expanded since their fabrication. These contain the sol-gel, coprecipitation, hydrothermal and microemulsion, microwave treatment [14][15][16]. Between the different techniques reported, microwave combustion the method is maybe chosen for homogeneity, high purity and reformed specifications.…”

Section: Introductionmentioning

confidence: 99%

Magnetic properties and kinetic roughening study of prepared polyaniline: lead ferrite, cobalt ferrite and nickel ferrite nanocomposites electrodeposited thin films

Abbasi

Hedayati

Ghanbari

2021

J Mater Sci: Mater Electron

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The purpose of this study was to prepare polyaniline-lead ferrite, polyaniline-cobalt ferrite and polyaniline / nickel ferrite thin layers. The preparation process consists of two steps :First, ferrites are synthesized using a microwave irradiated hydrothermal method. The ferrites were then added separately to 0.1 M aniline electrolyte solution and 0.2 M sulfuric acid. The accumulation of polyaniline and ferrite composites was carried out in an electrochemical cell by electrodeposition method. The surface morphology of the composite layers was investigated by scanning electron microscopy and the percentage of the constituents was studied by X-ray energy scattering (EDX) analysis. Also, surface roughness analysis and kinetic roughening of thin films was performed using atomic force microscopy (AFM). Hysteresis loop of magnetic samples were investigated by vibrating sample magnetometer (VSM). The structure and crystalline size of samples studied by X-ray diffraction analyze.

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Microwave combustion synthesis of zinc substituted nanocrystalline spinel cobalt ferrite: Structural and magnetic studies

Cited by 72 publications

References 42 publications

Electrochemical Performance of Lanthanum Cerium Ferrite Nanoparticles for Supercapacitor Applications

Electrochemical Performance of Lanthanum Cerium Ferrite Nanoparticles for Supercapacitor Applications

Analisis Perubahan Struktur Kristal dan Distribusi Kation Cobalt Ferrite Akibat Subtitusi Zinc

Magnetic properties and kinetic roughening study of prepared polyaniline: lead ferrite, cobalt ferrite and nickel ferrite nanocomposites electrodeposited thin films

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