Cobalt Nanoferrites: a Review on Synthesis, Characterization, and Applications

Thakur, Preeti; Gahlawat, Neetu; Punia, Pinki; Kharbanda, Saarthak; Ravelo, Blaise; Thakur, Atul

doi:10.1007/s10948-022-06334-1

Cited by 51 publications

(9 citation statements)

References 285 publications

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“…The ferrites NCs have gained the interest of numerous researchers in modern ages because of their semi‐conducting nature, which has superior chemical and environmental stability [2–4] . Spinel‐ferrite nanomaterials are considered particularly captivating due to their unique structural, magnetic, elastic, optical, electrical, catalytic capabilities, as well as their many potential applications in a vast variety of fields [5] …”

Section: Introductionmentioning

confidence: 99%

Impact of Co and Cu co‐doping on the Structural, Electrical, Magnetic and Solar Light Driven Photo‐Catalytic Properties of NiFe₂O₄Nano‐crystals for Crystal Violet Dye Removal

Bibi,

Jamshaid,

Iqbal

et al. 2024

ChemistrySelect

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Herein, we have synthesised cobalt (Co) and copper (Cu) co‐doped Ni‐ferrite Ni1‐xCoxFe2‐yCuyO4 nanocrystals (NCs) via the facile micro‐emulsion method. The materials were analysed for various physio‐chemical characterizations to investigate the co‐doping (Co and Cu) effects on magnetic, structural, electrical, photo‐catalytic properties. The structural analysis via Fourier Transform Infrared spectroscopy (FTIR) and X‐rays diffraction (XRD) showed the successful fabrication of Co and Cu co‐doped materials with cubic spinel geometry having a single phase, the crystallite size was observed in 15 to 24 nm range. The electrical response measured using current‐voltage (I–V) analysis showed good electrical features, the electrical resistivity declined from 6.85×107 Ohm.cm for un‐doped materials to 0.04×107 Ohm.cm for co‐doped materials, which was accredited due to the synergistic effects of Co and Cu metal cations in co‐doped Ni‐based ferrite structures. Magnetic investigation using VSM analysis showed increased saturation magnetization (Ms 31.32 to 50.75 emu/g) and coercivity (218.76 to 406.82 Oe) because of the higher magnetic responses of Co2+ions in the co‐doped spinel ferrite NCs. BET surface‐area analysis showed good porosity for co‐doped materials with an increased surface area of 52 to 104 m2/g on co‐doping. The Tauc's plot described the decline of band‐gap energies value (Egs) (1.99 eV) in co‐doped (x=y=0.56) materials as compared to (2.16 eV) of the un‐doped NiFe2O4 materials, which is due to more electrical responses of Co and Cu co‐dopant cations that possess higher energy levels, which can stabilize the charge carrier‘s species. Furthermore, the photo‐degradation using solar light showed good removal of crystal violet (CV) dye, which was almost 94.14 % by co‐doped material; however, by un‐doped material, it was 38.044 %. The scavenger experiment shows that the (OH⋅) hydroxyl radicals and (e−/h+) species play a prime role in the degradation of CV dye. Recycling and recoverability tests for five cycles’ exhibited outstanding stability of the photocatalyst with only 1.7 % losses in activity. Overall, our results showed that co‐doped Ni1‐xCoxFe2‐yCuyO4 NCs materials exhibited enhancement in the magnetic, electrical, photo‐catalytic properties and a decline in band‐gap energy values as compared to un‐doped NiFe2O4, which might have potential use in magnetic and electrical devices as well as solar‐driven photo‐catalyst materials for the remediation of environmental pollution.

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Section: Introductionmentioning

confidence: 99%

Impact of Co and Cu co‐doping on the Structural, Electrical, Magnetic and Solar Light Driven Photo‐Catalytic Properties of NiFe₂O₄Nano‐crystals for Crystal Violet Dye Removal

Bibi,

Jamshaid,

Iqbal

et al. 2024

ChemistrySelect

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“…Hexaferrites with a crystalline structure known as magneto-plumbite, have become a highly researched topic in recent times [1][2][3][4][5]. On both domestic and industrial levels, hexagonal ferrites have numerous applications, including door magnets, electromagnetic radiation shielding composites/coatings, electric motors, loudspeakers, macro and micro-nutrients for plants, biomedicine, terrestrial and astronomical telecommunications devices, catalysis, radio frequency coils, transverse and longitudinal recording media, transformers, water treatment, hyperthermia fluids, and magnetic resonance imaging (MRI) [6][7][8][9][10][11]. In the electronics industry, hexagonal ferrites play a crucial role due to their superior dielectric and magnetic characteristics [12].…”

Section: Introductionmentioning

confidence: 99%

Structural and magnetic properties of BaFe_9.95Al₂Mg_0.05O₁₉tuned through sintering temperature

Asif,

Ranjha,

Ghori

et al. 2023

Phys. Scr.

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The sintering temperature is a key way to tune the structural and magnetic properties of M-type hexaferrites. Here the effect of sintering temperature on BaFe9.95Al2Mg0.05O19 M-type hexagonal Ba-hexaferrites was studied. X-ray diffraction analysis revealed the presence of Fe2O3 impurity phases in all samples. The results showed that as the sintering temperature increased, the saturation magnetization and remanence ratio initially increased, then decreased at higher temperatures. On the other hand, the coercivity and magnetocrystalline anisotropy field decreased first, then increased. The morphology suggested that average grain size consistently grew between 800-2800 nm with increasing temperature. The optimal magnetic properties of BaFe9.95Al2Mg0.05O19 were achieved at a sintering temperature of 1280 ℃, with saturation magnetization 49.94 emu/g, coercivity 4.99 kOe, anisotropic field 1.5kOe, and magnetic moment of 9.4097µB. The findings suggest that the magnetic properties of M-type hexagonal ferrites can be significantly enhanced by optimizing the sintering temperature, which has implications for the development of high-performance self-biased circulators, Magnetic filters, and other magnetic applications.

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“…These terminations are characterized by the letter ''T'' in the simplified formula, M n+1 X n T x . Terminations of surface allow for additional alterations of surface [5].…”

Section: Introductionmentioning

confidence: 99%

“…For biomedical and industrial uses, researchers have investigated a variety of synthetic and natural biomaterials in recent times, and their consequent developments must help led to uses based on nano medicine applications. Nanoparticles are substances with one or each of their three dimensions measured in nanometres (1-100 nm) [5]. Due to their exceptional qualities and ultrathin structure, two-dimensional (2D) nanomaterials have become a popular topic of interdisciplinary research.…”

Section: Introductionmentioning

confidence: 99%

Biomedical Applications of 2D MXene Nanocomposites: A Review

Thakur,

Pathania,

Salvi

et al. 2023

ChemBioEng Reviews

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Biomaterials technology has advanced significantly in recent years and 2D nanostructures have played a key role in this advancement. A new ceramic 2D nanomaterial, MXene, made up of transition metal carbides, carbonitrides and nitrides with a planar layout that was produced by etching away “A” from a ceramic phase called “MAX”, has emerged to overcome the shortcomings of traditional biomaterials. MXene is used inadequately in biomedical applications due to its weak stability in physiological conditions, lack of prolonged and low biodegradability, and self‐controlled drug release. These drawbacks have given rise to the idea of using MXene/Polymer nano composites, due to their major properties like large surface area, metallic conductivity, biocompatibility, hydrophilicity, and size tunability. Polymer functionalization is possible by the surface‐available functional groups. This review has been done to focus on cutting‐edge examples such as polymer functionalized composites MXene for the developing field of biomedical applications. These applications consist of precise and prolonged antimicrobial activity, bio sensing, therapeutics, drug delivery, contrast‐enhanced diagnostic imaging, tissue engineering, flexible electronics, and bone regeneration.

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Cobalt Nanoferrites: a Review on Synthesis, Characterization, and Applications

Cited by 51 publications

References 285 publications

Impact of Co and Cu co‐doping on the Structural, Electrical, Magnetic and Solar Light Driven Photo‐Catalytic Properties of NiFe₂O₄Nano‐crystals for Crystal Violet Dye Removal

Impact of Co and Cu co‐doping on the Structural, Electrical, Magnetic and Solar Light Driven Photo‐Catalytic Properties of NiFe₂O₄Nano‐crystals for Crystal Violet Dye Removal

Structural and magnetic properties of BaFe_9.95Al₂Mg_0.05O₁₉tuned through sintering temperature

Biomedical Applications of 2D MXene Nanocomposites: A Review

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Cobalt Nanoferrites: a Review on Synthesis, Characterization, and Applications

Cited by 51 publications

References 285 publications

Impact of Co and Cu co‐doping on the Structural, Electrical, Magnetic and Solar Light Driven Photo‐Catalytic Properties of NiFe2O4Nano‐crystals for Crystal Violet Dye Removal

Impact of Co and Cu co‐doping on the Structural, Electrical, Magnetic and Solar Light Driven Photo‐Catalytic Properties of NiFe2O4Nano‐crystals for Crystal Violet Dye Removal

Structural and magnetic properties of BaFe9.95Al2Mg0.05O19tuned through sintering temperature

Biomedical Applications of 2D MXene Nanocomposites: A Review

Contact Info

Product

Resources

About

Impact of Co and Cu co‐doping on the Structural, Electrical, Magnetic and Solar Light Driven Photo‐Catalytic Properties of NiFe₂O₄Nano‐crystals for Crystal Violet Dye Removal

Impact of Co and Cu co‐doping on the Structural, Electrical, Magnetic and Solar Light Driven Photo‐Catalytic Properties of NiFe₂O₄Nano‐crystals for Crystal Violet Dye Removal

Structural and magnetic properties of BaFe_9.95Al₂Mg_0.05O₁₉tuned through sintering temperature