Studies on characterization, magnetic and electrochemical properties of nano-size pure and mixed ternary transition metal ferrites prepared by the auto-combustion method

Khairy, M.; Bayoumy, W.A.; Selima, S. S.; Mouśa, M. A.

doi:10.1557/jmr.2020.200

Cited by 27 publications

(7 citation statements)

References 52 publications

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“…46,47 Ferrite spinel of formula ABFe 2 O 4 consists of two divalent metal ions in which the ratio of these divalent ions may vary and are referred to as mixed ferrites. 48 The distribution of the cations in mixed ferrites significantly affects the surface properties of ferrospinels making them catalytically more active. Because of their small size and large z E-mail: leenar@cusat.ac.in number of cations for co-ordination sites, nanocrystallites are capable of enhancing the rate of chemical reactions and are increasingly gaining popularity.…”

mentioning

confidence: 99%

Simultaneous Electrochemical Determination of L-Dopa and Melatonin at Reduced Graphene Oxide-Cu_0.5Co_0.5Fe₂O₄Modified Platinum Electrode

Madhavan

Kunjappan

Rajith

2021

J. Electrochem. Soc.

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A novel nanocomposite of reduced graphene oxide (RGO) and spinel Cu0.5Co0.5Fe2O4 was synthesized and was characterized using fourier transform infrared spectroscopy (FTIR), energy dispersive X-ray analysis (EDAX), X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM). A selective and novel sensor was fabricated using this nanocomposite by modifying a Platinum (Pt) electrode by employing the simple drop-casting technique. The modified electrode was then used for the simultaneous electrochemical detection of L-3,4-dihydroxyphenylalanine (L-dopa) and melatonin. Cyclic voltammetry (CV), square wave voltammetry (SWV), linear sweep voltammetry (LSV) and electrochemical impedance spectroscopy (EIS) were used for the electrochemical characterization and applications of the developed sensor. The results of the optimization processes confirmed that PBS buffer with pH 7 can be used as the best experimental medium for the further studies. The electrooxidation of L-dopa and melatonin was found to be quasi reversible and diffusion controlled. Various electrochemical parameters such as charge transfer coefficient, diffusion coefficient and number of electrons involved in the electrochemical reaction of L-dopa and melatonin were experimentally calculated. The limit of detection from the simultaneous electrochemical determination was found to be 5.83 × 10−8 M for melatonin and 4.80 × 10−8 M for L-dopa.

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confidence: 99%

Simultaneous Electrochemical Determination of L-Dopa and Melatonin at Reduced Graphene Oxide-Cu_0.5Co_0.5Fe₂O₄Modified Platinum Electrode

Madhavan

Kunjappan

Rajith

2021

J. Electrochem. Soc.

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“…The synthesis and characteristics of mixed cobalt-copper ferrites have been the subject of several papers during the last three years. As an illustration, Khairy et al [35] used the self-combustion process with urea as fuel to synthesize both pure and mixed ternary ferrite nanocrystallites Cu 0.5 Co 0.5 Fe 2 O 4 (CuCoF). They concluded that the magnetic, structural, and electrochemical characteristics of the ferrites that were produced were significantly influenced by the distribution of cations in the examined samples.…”

Section: Introductionmentioning

confidence: 99%

A Facile Glycerol-Assisted Synthesis of Low-Cu2+-Doped CoFe2O4 for Electrochemical Sensing of Acetaminophen

Alfonso-González,

Granja-Banguera,

Morales-Morales

et al. 2023

Biosensors

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This work devised a simple glycerol-assisted synthesis of a low-Cu2+-doped CoFe2O4 and the electrochemical detection of acetaminophen (AC). During the synthesis, several polyalcohols were tested, indicating the efficiency of glycerin as a cosolvent, aiding in the creation of electrode-modifier nanomaterials. A duration of standing time (eight hours) before calcination produces a decrease in the secondary phase of hematite. The synthesized material was used as an electrode material in the detection of AC. In acidic conditions (pH 2.5), the limit of detection (LOD) was 99.4 nM, while the limit of quantification (LOQ) was found to be (331 nM). The relative standard deviation (RSD), 3.31%, was computed. The enhanced electrocatalytic activity of a low-Cu2+-doped CoFe2O4-modified electrode Cu0.13Co0.87Fe2O4/GCE corresponds extremely well with its resistance Rct, which was determined using the electrochemical impedance spectroscopy (EIS) technique and defined its electron transfer capacity. The possibility of a low-Cu2+-doped CoFe2O4 for the electrochemical sensing of AC in human urine samples was studied. The recovery rates ranging from 96.5 to 101.0% were obtained. These findings suggested that the Cu0.13Co0.87Fe2O4/GCE sensor has outstanding practicability and could be utilized to detect AC content in real complex biological samples.

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“…Materials based on transition metal ferrites are increasingly being used in various fields of science and technology due to their excellent magnetic, catalytic, and photo-and electrocatalytic properties, among others [1][2][3]. Application of nanoparticles of transition metal ferrites for magnetic resonance imaging, cancer diagnosis at the primary stage, magnetothermal, anticancer and antimicrobial therapies, hyperthermia, and drug delivery have been recently reviewed [4,5].…”

Section: Introductionmentioning

confidence: 99%

TiO2-CoFe2O4 and TiO2-CuFe2O4 Composite Films: A New Approach to Synthesis, Characterization, and Optical and Photocatalytic Properties

et al. 2023

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Here, we report a new simple and fast method of cobalt and copper ferrites film fabrication on the Ti/TiO2 surface. The approach is based on the deposition of gelatin gel containing copper and cobalt nitrates on the surface of porous oxide-silicon coatings on titanium obtained by plasma electrolytic oxidation (PEO) followed by two-stage annealing at 300 °C and 800 °C to yield ferrite films with good adhesion to PEO layer. The presence of Co/Cu ferrite phases was confirmed by EDX analysis, XRD, and Mössbauer spectroscopy. TiO2-CoFe2O4 and TiO2-CuFe2O4 composite films have excellent performance in the photocatalytic degradation of indigo carmine as a model dye at pH 3 under UV and visible irradiation. The suggested approach to obtain ferrite/TiO2 composite films is promising for the development of magnetic materials, sensors, catalysts, and photocatalysts for various applications.

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Studies on characterization, magnetic and electrochemical properties of nano-size pure and mixed ternary transition metal ferrites prepared by the auto-combustion method

Abstract: Abstract

Cited by 27 publications

References 52 publications

Simultaneous Electrochemical Determination of L-Dopa and Melatonin at Reduced Graphene Oxide-Cu_0.5Co_0.5Fe₂O₄Modified Platinum Electrode

Simultaneous Electrochemical Determination of L-Dopa and Melatonin at Reduced Graphene Oxide-Cu_0.5Co_0.5Fe₂O₄Modified Platinum Electrode

A Facile Glycerol-Assisted Synthesis of Low-Cu2+-Doped CoFe2O4 for Electrochemical Sensing of Acetaminophen

TiO2-CoFe2O4 and TiO2-CuFe2O4 Composite Films: A New Approach to Synthesis, Characterization, and Optical and Photocatalytic Properties

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Studies on characterization, magnetic and electrochemical properties of nano-size pure and mixed ternary transition metal ferrites prepared by the auto-combustion method

Abstract: Abstract

Cited by 27 publications

References 52 publications

Simultaneous Electrochemical Determination of L-Dopa and Melatonin at Reduced Graphene Oxide-Cu0.5Co0.5Fe2O4Modified Platinum Electrode

Simultaneous Electrochemical Determination of L-Dopa and Melatonin at Reduced Graphene Oxide-Cu0.5Co0.5Fe2O4Modified Platinum Electrode

A Facile Glycerol-Assisted Synthesis of Low-Cu2+-Doped CoFe2O4 for Electrochemical Sensing of Acetaminophen

TiO2-CoFe2O4 and TiO2-CuFe2O4 Composite Films: A New Approach to Synthesis, Characterization, and Optical and Photocatalytic Properties

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Simultaneous Electrochemical Determination of L-Dopa and Melatonin at Reduced Graphene Oxide-Cu_0.5Co_0.5Fe₂O₄Modified Platinum Electrode

Simultaneous Electrochemical Determination of L-Dopa and Melatonin at Reduced Graphene Oxide-Cu_0.5Co_0.5Fe₂O₄Modified Platinum Electrode