Investigation of Magnetic and Dielectric Properties of Cobalt Cubic Spinel Ferrite Nanoparticles Synthesized by CTAB-Assisted Co-precipitation Method

Haneef, Mobeen; Gul, Iftikhar Hussain; Hussain, Majid; Hassan, Ibrar

doi:10.1007/s10948-021-05869-z

Cited by 5 publications

(4 citation statements)

References 49 publications

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“…The impact of CTAB can be described by surfactant–particle and surfactant–surfactant interactions. When CTAB is present in lower concentrations, the surfactant lowers the surface tension and envelops the nucleating particles, which reduces the size of the crystallites . However, the strong intensity of diffraction peaks in both composites suggests the successful synthesis and crystalline nature of the FeNi alloy.…”

Section: Resultsmentioning

confidence: 99%

“…When CTAB is present in lower concentrations, the surfactant lowers the surface tension and envelops the nucleating particles, which reduces the size of the crystallites. 34 However, the strong intensity of diffraction peaks in both composites suggests the successful synthesis and crystalline nature of the FeNi alloy. There is also a very slight shift of the peak, i.e., of 44.25°, corresponding to the (111) plane toward higher diffraction angles, indicating the insertion of Fe into the host composite lattice.…”

Section: ■ Introductionmentioning

confidence: 98%

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CTAB-Assisted Synthesis of FeNi Alloy Nanoparticles: Effective and Stable Electrocatalysts for Urea Oxidation Reactions

Dhawale,

Munde,

Mulik

et al. 2024

Langmuir

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Development of highly efficient electrocatalysts for treating urearich wastewater is an important problem in environmental management and energy production. In this work, an iron−nickel alloy (Fe−Ni alloy) was synthesized via soft-template cetyltrimethylammonium bromide (CTAB)-assisted precipitation using low-temperature calcination. The as-synthesized nanoalloy was characterized by X-ray diffraction (XRD), which revealed the formation of a facecentered cubic (FCC) structure of the Fe−Ni alloy; field emission-scanning electron microscopic (FE-SEM) analysis revealed the spherical shape of the Fe− Ni alloy; high-resolution transmission electron microscopy (HR-TEM) revealed the average size to be ∼33.09 nm; and X-ray photoelectron spectroscopy (XPS) showed the presence of Fe, Ni, C, and O components and their chemical composition and valence states in the Fe−Ni alloy. The electrochemical urea oxidation reaction (UOR) was investigated by conducting linear sweep voltammetry (LSV) tests on the synthesized electrocatalysts with different Ni/Fe ratios in alkaline electrolytes with urea. The potential required to reach a current density of 10 mA cm −2 is 1.27 V vs RHE, which demonstrates the higher electrochemical activity of the Fe−Ni alloy compared to other individual compounds. This could be due to CTAB which improved the structural stability and synergetic and electronic effects in the nanoscale. This study will further contribute to renewable energy generation technology with long-term energy sustainability and also opens up great potential for reducing water pollution.

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Section: Resultsmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 98%

CTAB-Assisted Synthesis of FeNi Alloy Nanoparticles: Effective and Stable Electrocatalysts for Urea Oxidation Reactions

Dhawale,

Munde,

Mulik

et al. 2024

Langmuir

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show abstract

“…The limitation of this work is also the utilization of UV light, which restricted its practical application. Various factors affect the structural properties (particle size and shape) of spinel ferrite during the co-precipitation process: salt precursor, solution medium, temperature, pH and extra surfactant (Haneef et al 2021).…”

Section: Spinel Ferrite/graphenementioning

confidence: 99%

Recent advances in spinel ferrite-based magnetic photocatalysts for efficient degradation of organic pollutants

Song

2023

Water Science and Technology

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Although spinel ferrite (MFe2O4, M = Zn, Ni, Mn, etc.) has been reported as a promising catalyst, its low photocatalytic activity under visible light greatly restricts its practical application. Spinel ferrite-based photocatalytic composites have exhibited improved efficiency for pollutant degradation, due to interface charge carrier mobility and structural modification. Meanwhile, due to its magnetism and stability, spinel ferrite composite can be easily recycled for long-term utilization, showing its high application potential. In this review, the recent advances in the construction and photocatalytic degradation of spinel ferrite composites are discussed, with an emphasis on the relationship between structural property and photocatalytic activity. In addition, to improve their photocatalytic application, the challenges, gaps and future research prospects are proposed.

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“…Therefore, our research work used the co-precipitation method for synthesizing Li 1+ /Zn 2+ co-doped cobalt ferrites. CTAB—a surface directing agent and stabilizer—is used for reducing the surface tension properties among nanoparticles, providing control over particle size and desired crystallinity [ 30 ]. It is also used to inhibit agglomeration, the major constraint of magnetic nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

Correlation between Magnetic and Dielectric Response of CoFe2O4:Li1+/Zn2+ Nanopowders Having Improved Structural and Morphological Properties

et al. 2023

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The vast applicability of spinel cobalt ferrite due to its unique characteristics implies the need for further exploration of its properties. In this regard, structural modification at the O-site of spinel with Li1+/Zn2+ was studied in detail for exploration of the correlation between structural, magnetic, and dielectric properties of the doped derivatives. The CTAB-assisted coprecipitation method was adopted for the synthesis of the desired compositions owing to its cost effectiveness and size controlling ability. Redistribution of cations at T- and O-sites resulted in the expansion of the crystal lattice, but no distortion of the cubic structure was observed, which further supports the flexible crystal structure of spinel for accommodating larger Li1+/Zn2+ cations. Moreover, an XPS analysis confirmed the co-existence of the most stable oxidation states of Zn2+, Li1+, Co2+, and Fe3+ ions with unstable Co3+ and Fe2+ ions as well, which induces the probability of hopping mechanisms to a certain extent and is a well-established behavior of cobalt ferrite nanoparticles. The experimental results showed that Li1+/Zn2+ co-doped samples exhibit the best magnetic properties at dopant concentration x = 0.3. However, increasing the dopant content causes disturbance at both sites, resulting in decreasing magnetic parameters. It is quite evident from the results that dielectric parameters are closely associated with each other. Therefore, dopant content at x = 0.1 is considered the threshold value exhibiting the highest dielectric parameters, whereas any further increase would result in decreasing the dielectric parameters. The reduced dielectric properties and enhanced magnetic properties make the investigated samples a potential candidate for magnetic recording devices.

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Investigation of Magnetic and Dielectric Properties of Cobalt Cubic Spinel Ferrite Nanoparticles Synthesized by CTAB-Assisted Co-precipitation Method

Cited by 5 publications

References 49 publications

CTAB-Assisted Synthesis of FeNi Alloy Nanoparticles: Effective and Stable Electrocatalysts for Urea Oxidation Reactions

CTAB-Assisted Synthesis of FeNi Alloy Nanoparticles: Effective and Stable Electrocatalysts for Urea Oxidation Reactions

Recent advances in spinel ferrite-based magnetic photocatalysts for efficient degradation of organic pollutants

Correlation between Magnetic and Dielectric Response of CoFe2O4:Li1+/Zn2+ Nanopowders Having Improved Structural and Morphological Properties

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