Structural, magnetic, electrical and catalytic activity of copper and bismuth co-substituted cobalt ferrite nanoparticles

Sumathi, S.; Lakshmipriya, V.

doi:10.1007/s10854-016-5860-z

Cited by 19 publications

(12 citation statements)

References 29 publications

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“…Due to their peculiar magnetic properties and small dimensions, magnetic nanoparticles (MNPs) have a wide variety of properties and hence applications in different areas of science and technology, including electromagnetic sensors and devices [1,2] , MRI imaging [3] , design and fabrication of biomedical devices [3] , hyperthermia increasing temperature of cancerous tissue [4,5] , drug delivery and other biomedical applications [6][7][8][9] , electrochemical sensors [10] , supercapacitor applications [10] , water purification [11] and so on. Being more precise, in biomedical applications, by approaching the nanosize scale, one can get close to biological entities of interest.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Ultra‐fine Co_1‐(x+y)Ni_xZn_yFe₂O₄ Ferrite Nanoparticles: Customizing Magnetic Properties

et al. 2021

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Synthesis of ultrafine Co1-(x+y)NixZnyFe2O4 magnetic nanoparticles with different chemical compositions is essential to study the magnetic fluid hyperthermia (MFH) as a treatment in which the superparamagnetic behaviour of materials is beneficial. In this paper, Co1-(x+y)NixZnyFe2O4 magnetic nanoparticles with different x and y amounts were synthesized to find out a tuning pattern for magnetic properties, especially anisotropy constant to gain the best heating efficiency. We proved that the co‐presence of ions will greatly affect the magnetic performance of our superparamagnetic nanoparticles in whichCo0.59Zn0.41Fe2O4 for values of x=0.00 and y=0.41 exhibits the highest magnetic anisotropy constant after CoFe2O4 CoFe2O4. This success in customizing magnetic properties to reach high magnetic properties by using less toxic materials might be another good starting point for researchers to focus more on their possible applications.

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Section: Introductionmentioning

confidence: 99%

Synthesis of Ultra‐fine Co_1‐(x+y)Ni_xZn_yFe₂O₄ Ferrite Nanoparticles: Customizing Magnetic Properties

et al. 2021

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“…Fesharaki et al (2017) evaluated the catalytic performance of CoFe 1.8 Bi 0.2 O 4 -Bi 2 O 3 nanocomposite for the photo-oxidative degradation of dyes and revealed the high magnetic and catalytic performance of fabricated nanocomposite. Kiran and Sumathi (2017) and Sumathi and Lakshmipriya (2017) demonstrated the applicability of bismuth-doped cobalt ferrite nanostructures as potential catalysts for the reduction of nitrophenols. It was observed that the introduction of bismuth into cobalt ferrite lattice had shortened the reaction time for the reductive transformation of nitrophenols to aminophenols.…”

Section: Introductionmentioning

confidence: 99%

Visualizing the catalytic advancements in nickel ferrite via inclusion of bismuth for the removal of hazardous environmental pollutants

Kapoor

Goel

Singhal

2020

Water & Environment J

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The incorporation of bismuth into spinel nanoferrites has emerged as an interesting platform for amendment in structural characteristics, cation distribution and catalytic efficacy of nanoferrites. Bismuth has one of its kind properties to occupy both the octahedral and tetrahedral sites which enticed a significant role in evaluating the catalytic behavior of bismuth-doped nanoferrites. The present work explored the versatility of bismuth substituted nickel ferrite nanostructures as catalysts for the oxidative degradation of dyes and reduction of nitrophenols. The catalytic activity was found to increase up to the incorporation of 4% bismuth owing to the occupancy of catalytically active octahedral sites, whereas devastation was observed at higher concentrations due to accumulation of bismuth in tetrahedral sites. The observed trend of catalytic behavior was in full concordance with the saturation magnetisation, crystallite size, and band-gap. The recyclability studies indicated the applicability of bismuth substituted nanoferrites as potential catalysts for the mitigation of environmental pollutants.

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“…Among the ferrites, spinel ferrites are of great interest due to their wide‐ranging applications in modern technology. These materials are broadly studied due to their electric, magnetic, catalytic and structural properties . When spinel ferrites are in the nanometric size range, they display superparamagnetic nature, which is of great interest due from the point of view of their application .…”

Section: Introductionmentioning

confidence: 99%

“…[26] Metal oxides containing iron as the main component are called ferrites with general formula MFe 2 O 4 (M = Co, Ni, Cu, etc.). [10][11][12][27][28][29][30] Ferrites are important magnetic materials with high magnetic character, low cost of production, high thermal and chemical stability, and a wide range of applications in scientific and industrial fields such as in transformer cores, permanent magnets, radio wave circuits, magnetic resonance imaging, high-quality filters, antenna rods, magnetic recording media, operating devices, magnetic resonance amplifiers, etc. [31] Nowadays, ferrite materials are used in sensor materials, as catalysts for the oxidation of alcohols into aldehydes and also as antibacterial agents.…”

Section: Introductionmentioning

confidence: 99%

“…These materials are broadly studied due to their electric, magnetic, catalytic [37,38] and structural properties. [28] When spinel ferrites are in the nanometric size range, they display superparamagnetic nature, which is of great interest due from the point of view of their application. [27] Further, in a catalytic system, they can be easily separated from reaction media using an external magnet.…”

Section: Introductionmentioning

confidence: 99%

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Dual functional novel catalytic Cu_1−xZr_xFe₂O₄ (x=0, 0.5, 1) nanoparticles for synthesis of polysubstituted pyridines and sunlight‐driven degradation of methylene blue

Singh

Rajput

Govil

et al. 2018

Applied Organom Chemis

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The effect of varied zirconium content on the structural, morphological, magnetic, optical, thermal and catalytic properties of nanoparticles of the ferrite Cu1 − xZrxFe2O4 (x = 0, 0.5, 1) was investigated. The mixed ferrite was synthesized by the auto‐combustion method using nitrates of respective metals and citric acid as a chelating agent. The as‐prepared nanoparticles showed dual benefits. They were employed as a heterogeneous catalyst for one‐pot synthesis of polysubstituted pyridine derivatives as well as for catalytic degradation of industrial waste dyes such as methylene blue (MB). The highlight of the research reported is the catalytic degradation of industrial waste (MB) with high efficiency in eluent of a wide range of pH (3–13). The proposed nanoparticles arguably offer certain great advantages that include: low cost, facile nature, anti‐leaching property, magnetic recoverability and recyclability. The characterization of the as‐synthesized nanoparticles was done using various techniques. The leaching study was carried out using inductively coupled plasma optical emission spectroscopy. The formation of organic products was confirmed using Fourier transform infrared and 1H NMR spectroscopies and examination of degradation products of MB dye was carried out using mass spectrometry and UV–visible spectroscopy.

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Structural, magnetic, electrical and catalytic activity of copper and bismuth co-substituted cobalt ferrite nanoparticles

Cited by 19 publications

References 29 publications

Synthesis of Ultra‐fine Co_1‐(x+y)Ni_xZn_yFe₂O₄ Ferrite Nanoparticles: Customizing Magnetic Properties

Synthesis of Ultra‐fine Co_1‐(x+y)Ni_xZn_yFe₂O₄ Ferrite Nanoparticles: Customizing Magnetic Properties

Visualizing the catalytic advancements in nickel ferrite via inclusion of bismuth for the removal of hazardous environmental pollutants

Dual functional novel catalytic Cu_1−xZr_xFe₂O₄ (x=0, 0.5, 1) nanoparticles for synthesis of polysubstituted pyridines and sunlight‐driven degradation of methylene blue

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Structural, magnetic, electrical and catalytic activity of copper and bismuth co-substituted cobalt ferrite nanoparticles

Cited by 19 publications

References 29 publications

Synthesis of Ultra‐fine Co1‐(x+y)NixZnyFe2O4 Ferrite Nanoparticles: Customizing Magnetic Properties

Synthesis of Ultra‐fine Co1‐(x+y)NixZnyFe2O4 Ferrite Nanoparticles: Customizing Magnetic Properties

Visualizing the catalytic advancements in nickel ferrite via inclusion of bismuth for the removal of hazardous environmental pollutants

Dual functional novel catalytic Cu1−xZrxFe2O4 (x=0, 0.5, 1) nanoparticles for synthesis of polysubstituted pyridines and sunlight‐driven degradation of methylene blue

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Product

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Synthesis of Ultra‐fine Co_1‐(x+y)Ni_xZn_yFe₂O₄ Ferrite Nanoparticles: Customizing Magnetic Properties

Synthesis of Ultra‐fine Co_1‐(x+y)Ni_xZn_yFe₂O₄ Ferrite Nanoparticles: Customizing Magnetic Properties

Dual functional novel catalytic Cu_1−xZr_xFe₂O₄ (x=0, 0.5, 1) nanoparticles for synthesis of polysubstituted pyridines and sunlight‐driven degradation of methylene blue