Synthesis and characterization of manganese ferrite from low grade manganese ore through solid state reaction route

Ahmad, Salar; Ali, Sajjad; Ullah, Ikram; Zobaer, M. S.; Albakri, Ashwag; Muhammad, Taseer

doi:10.1038/s41598-021-95625-z

Cited by 15 publications

(12 citation statements)

References 46 publications

(43 reference statements)

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“…Salar et.al. [27] also found similar results hence, the present results are matched with previously reported experimental results.…”

Section: Scanning Electron Microscopy (Sem) Analysissupporting

confidence: 93%

“…Salar et.al. [27] also found similar elemental composition for Mn-ferrite nanoparticles. Table 2 Weight percent of different elements detected via EDX for region A and B of gure 5a and 5b respectively.…”

Section: Energy Dispersive X-ray (Edx) Analysissupporting

confidence: 55%

“…The small crystallites g (5a) are embedded in silicate layer. This layer is formed by the silica present initially as an impurity in Mn-ore which, after heat treatment, is melted and form silicate layer [27]. These embedded particles within silicate layers account for the strength of the synthesized sample.…”

Section: Scanning Electron Microscopy (Sem) Analysismentioning

confidence: 99%

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Synthesis and Characterization of Manganese Ferrite nano-particles from Low-grade Manganese ore and Ferric oxide powder via Pyrometallurgy

Ahmad

Ullah

Ali

et al. 2022

Preprint

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The present study focuses on the synthesis and characterization of manganese ferrite. Manganese ferrite has been synthesized by mixing ferric oxide powder (Fe2O3) with low grade Mn-ore and then sintering it at different temperatures (1000-1200 0C). the method is cheap, simple, and easily controls particle size. It has been established that manganese ferrite phase has been successfully achieved at all the three sintering temperatures however, a higher peak has been noted at sintering temperature of 1200 0C in XRD diffractogram. An increase in particle size with increasing sintering temperature has been reported. Thermal analysis shows a weight gain of ( ) at ( ) which further confirm the phase formation of manganese ferrite. Stretching vibrations were recorded at 1636 cm-1 while some peaks were observed below 1000 cm-1 in FTIR graph which is a common feature of ferrites. Microstructural analysis show small pores at the surface and confirm that the synthesized manganese ferrite nano-particles show best magnetic properties and possess high melting point. A highly synchronous nucleation and growth of the synthesized nanoparticles is also confirmed from TEM analysis. Overall, because of its simpleness and cheapness this method could be used for synthesis of manganese ferrite synthesis.

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“…Salar et.al. [27] also found similar results hence, the present results are matched with previously reported experimental results.…”

Section: Scanning Electron Microscopy (Sem) Analysissupporting

confidence: 93%

Section: Energy Dispersive X-ray (Edx) Analysissupporting

confidence: 55%

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Synthesis and Characterization of Manganese Ferrite nano-particles from Low-grade Manganese ore and Ferric oxide powder via Pyrometallurgy

Ahmad

Ullah

Ali

et al. 2022

Preprint

Self Cite

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“…Some impurity phases correspond to manganese oxide with characteristic peaks at 2θ being 45 • and 59 • and also silicon oxide with characteristic peak at 2θ around 28 • as described. 64,65 Equally, the patterns for the NiFe 2 O 4 np were at 2θ = 30 • , 35 , and 75 • attributable to reflection planes (2 2 0), (3 1 1), (4 0 0), (4 2 2), (5 1 1), (4 4 0), and (5 3 3), respectively. The patterns matched perfectly with the data described for nickel ferrite NPs.…”

Section: Characterization Of Synthesized Magnetic Nanoparticlesmentioning

confidence: 95%

Inhibition of biofilm, quorum‐sensing, and swarming motility in pathogenic bacteria by magnetite, manganese ferrite, and nickel ferrite nanoparticles

Doğaç,

Tamfu,

Bozkurt

et al. 2023

Biotech and App Biochem

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Resistance to antibiotics by pathogenic bacteria constitutes a health burden and nanoparticles (NPs) are being developed as alternative and multipurpose antimicrobial substances. Magnetite (Fe3O4 np), manganese ferrite (MnFe2O4 np) and nickel ferrite (NiFe3O4 np) NPs were synthesized and characterized using thermogravimetric analysis, transmission electron microscopy, Fourier transformed infra‐red, and X‐ray diffraction. The minimal inhibitory concentrations (MIC) ranged from 0.625 to 10 mg/mL against gram‐positive (Staphylococcus aureus ATCC 25923 and Enterococcus faecalis ATCC 29212), gram‐negative (Escherichia coli ATCC 25922 and Pseudomonas aeruginosa ATCC 27853) and candida (Candida albicans ATCC 10239 and Candida tropicalis ATCC 13803) species. The NPs exhibited violacein inhibition against Chromobacterium violaceum CV12472 of 100% at MIC and reduced to 27.2% ± 0.8% for magnetite NPs, 12.7% ± 0.3% for manganese ferrite NPs and 43.1% ± 0.2% for nickel ferrite NPs at MIC/4. Quorum‐sensing (QS) inhibition zones against C. violaceum CV026 were 12.5 ±0.6 mm for Fe3O4 np, 09.1 ± 0.5 mm for MnFe3O4 NP and 17.0 ± 1.2 mm for NiFe3O4 np. The NPs inhibited swarming motility against P. aeruginosa PA01 and biofilm against six pathogens and the gram‐positive biofilms were more susceptible than the gram‐negative ones. The NiFe2O4 np had highest antibiofilm activity against gram‐positive and gram‐negative bacteria as well as highest QS inhibition while Fe3O4 NP had highest biofilm inhibition against candida species. The synthesized magnetic NPs can be used in developing anti‐virulence drugs which reduce pathogenicity of bacteria as well as resistance.

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“…It has been advantageous in the reduction of eddy-current losses due to its high resistivity. [158,159] The applications of MnFe 2 O 4 have been widely exploited in electronic devices [160], magnetic inductors [161], high density recording media [162], and in high frequency transformers [158]. The crystal structure of manganese ferrite is an isomorphic form of the mineral spinel Mg 2+ Al 2 3+ O 4 2− where trivalent Fe 3+ replaces the Al 3+ and divalent cation Mn 2+ replaces the divalent Mg 2+ in the formula unit.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Magnetic Nanofibers for Their Potential Applications in Wireless Charging for Energy Efficient EVs

Nawaz¹

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There is a growing demand to find new materials for flux guiding applications in the inductive power transfer systems. The inductive power transfer system (IPT) in electric vehicles has gained importance due to advantages including safety, efficiency, flexibility, and user-friendliness. The potential of IPT systems in dynamic flux transfer on-road requires the flux concentrators to maximize flux transfer at minimum power losses. Ferrite materials are the most commonly used materials in the IPT cores for flux-transfer applications due to their reasonable susceptibility, high resistivity, and semi-conducting nature. Their high resistivity is advantageous to minimize eddy-current losses. However, there are certain drawbacks to their use, for example, they can still result in some eddy-current losses as their resistivity is not high enough, they are very brittle in nature and are difficult to be made in thin sheets or in arbitrary shapes, and they are very heavy that increases the vehicle mass and energy consumption. An ideal material for wireless charging applications should be thin, and flexible that can be made in arbitrary shapes with a reasonable susceptibility and high resistivity for wireless charging applications. This thesis aimed to investigate the preparation of bimetallic Ni1−xFex, semi-conducting MnFe2O4, and Sm3+ doped semi-conducting MnFe2−xSmxO4 nanofibers made by an electrospinning method for their potential applications in wireless charging. Ni1−xFex was selected because the bulk material shows a high permeability which is useful for flux-guiding, but it has a low resistivity. However, the preparation of thin Ni1−xFex nanofiber sheets can result in high resistivities in nanodimensions. The parameter x was studied by varying its value between 0.1-0.5 as Ni1−xFex show high susceptibility at x∼0.2, and high magnetic moment at x∼0.5. The characterizations showed the presence of Ni1−xFex nanoparticles formation within nanofibers for all the samples which can be advantageous to further increasing the resistivity and to reduce eddy-current losses. A bimodal particle size distribution was observed at x∼0.1, that became less bimodal at x∼0.2 and skewed with predominantly small nanoparticles at x∼0.5. Superparamagnetic behaviour was observed at x∼0.5 due to the formation of smaller nanoparticles. There was a systematic increase in the differential susceptibility with increasing x from 6 at x∼0.1 to 18 at x∼0.5. These results were encouraging for potential applications in wireless charging. Semiconducting MnFe2O4 nanofibers were made by electrospinning method because bulk material has high resistivity. The thermal processing of these nanofibers at 700◦C resulted in large polycrystalline nanoparticles whereas, the thermal processing at lower temperature 620◦C resulted in a mixture of small nanoparticles within these nanofibers. The presence of some single crystal nanorods was also seen in both samples. The high field magnetization was largest for the sample processed at higher temperature, i.e., 57% of the total magnetization value at 700◦C as compared to 46% obtained at low temperatures at 620◦C. However, one sample processed at 620◦C showed the complete formation of MnFe2O4 nanorods with the highest saturation magnetization to 76% of the total magnetization. These results are encouraging as the potential of nanorod synthesis can be useful in the flux guiding applications. Electrospun MnFe2−xSmxO4 nanofibers with Sm3+(x) doping were also made to observe the change in the structural and magnetic properties at x=0.06-0.25. The results showed the successful incorporation of Sm3+ in the crystal structure of MnFe2O4 at x≤0.2. Polycrystalline nanoparticles were seen at low fractions of x≤0.1 but more smaller nanoparticles were formed at x=0.2 and x=0.25. Superparamagnetic behaviour was observed at high fractions of x (x=0.2 and x=0.25). The saturation magnetization for x≤0.2 was largest for x=0.06. This study has provided a solid foundation for a more in-depth exploration of magnetic electrospun nanofiber sheets for future applications in wireless charging systems.

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Synthesis and characterization of manganese ferrite from low grade manganese ore through solid state reaction route

Cited by 15 publications

References 46 publications

Synthesis and Characterization of Manganese Ferrite nano-particles from Low-grade Manganese ore and Ferric oxide powder via Pyrometallurgy

Synthesis and Characterization of Manganese Ferrite nano-particles from Low-grade Manganese ore and Ferric oxide powder via Pyrometallurgy

Inhibition of biofilm, quorum‐sensing, and swarming motility in pathogenic bacteria by magnetite, manganese ferrite, and nickel ferrite nanoparticles

Synthesis of Magnetic Nanofibers for Their Potential Applications in Wireless Charging for Energy Efficient EVs

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