Synthesis and magnetic properties of Ni0.5MgxZn0.5-xFe2O4 (0.0 ≤ x ≤ 0.5) nanocrystalline spinel ferrites

Hezam, F.A.; Khalifa, N. O.; Nur, Omer; Mustafa, Mustafa Abbas

doi:10.1016/j.matchemphys.2020.123770

Cited by 20 publications

(4 citation statements)

References 66 publications

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“…The Cu 2+ ions substituted in synthesized samples have a direct bearing on the coercivity. Ongoing investigations proposed that coercivity was influenced by microstrain, size dissemination, magneto crystallinity, attractive area size, and anisotropy (29,30) .…”

Section: Magnetic Properties Studymentioning

confidence: 99%

Effect of Cu2+ substitution on structure, morphology, and magnetic properties of Mg-Zn spinel ferrite

Komali¹,

Murali²,

Parajuli³

et al. 2021

IJST

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Objective: To prepare Cu doped Mg 0.5−x Cu x Zn 0.5 Fe 2 O 4 (x = 0.0, 0.05, 0.1, 0.15, 0.2 and 0.25) spinel ferrites materials and study the structure, morphology, and magnetic properties. Methods: Cu doped Mg-Zn spinel ferrites are magnetic and highly resistive materials. They were synthesized by the method of solid-state reaction and characterized by x-ray diffraction (XRD), field effect scanning electron microscopy (FESEM), Fourier transform infrared (FTIR), and vibrating sample magnetometer (VSM) for their structural, compositional, morphological, functional properties. They are with spinel structure under Fd-3m space group. Their crystallite size was 44.58 nm to 31.02 nm range after calcined at 1000 o C. Their spinel structure was confirmed with FT-IR analysis, whose absorption bands were 598.84 -580.40 cm -1 and 405.35 -402.15 cm -1 range for higher and lower frequency, respectively. The value of coercivity is in the range 146.33 -9.427 Oe with the variation of content. The lower values of the coercivity indicated the soft ferrimagnetic nature of the synthesized materials. Findings/ Application: Substitution of non-magnetic Cu 2+ ions strongly influenced the structural and magnetic properties of magnesium ferrites.

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Section: Magnetic Properties Studymentioning

confidence: 99%

Effect of Cu2+ substitution on structure, morphology, and magnetic properties of Mg-Zn spinel ferrite

Komali¹,

Murali²,

Parajuli³

et al. 2021

IJST

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“…Hezam et al fabricated Ni 0.5 MgxZn 0.5-x Fe 2 O 4 with particle size less than 30 nm. The X-ray diffraction analysis indicated that all ferrites were a single-phase cubic spinel structure (Hezam et al 2021). T. Ajeesha et al synthesized Mg 1-x Ni x Fe 2 O 4 (x = 0.0, 0.6, 1.0) nanoparticles with crystal size of 20-30 nm.…”

Section: Co-precipitationmentioning

confidence: 99%

Engineered magnetic oxides nanoparticles as efficient sorbents for wastewater remediation: a review

et al. 2021

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The rapid urbanization and industrialization is causing worldwide water pollution, calling for advanced cleaning methods. For instance, pollutant adsorption on magnetic oxides is efficient and very practical due to the easy separation from solutions by an magnetic field. Here we review the synthesis and performance of magnetic oxides such as iron oxides, spinel ferrites, and perovskite oxides for water remediation. We present structural, optical, and magnetic properties. Magnetic oxides are also promising photocatalysts for the degradation of organic pollutants. Antimicrobial activities and adsorption of heavy metals and radionucleides are also discussed.

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“…By chemical synthesis methods, homogeneous products can be obtained due to better control of parameters such as temperature, aliquots of precursors, and pressure, among others (44). Typical chemical synthesis methods of MNPs-Fe are coprecipitation (45), sol-gel (46), hydrothermal (47), and solvothermal (48), among others (49)(50)(51). Nevertheless, these synthesis methods usually involve potentially toxic reagents, resulting in environmental and biological risks (24).…”

Section: Introductionmentioning

confidence: 99%

Anti-Bacterial Iron Oxide Magnetic Nanoparticles based on Orange Peel Extract

García¹,

Garzón-Romero²,

Salazar³

et al. 2022

Preprint

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Magnetic nanoparticles based on iron oxides (MNPs-Fe) with magnetite or maghemite phases have been widely employed in bio-applications. Thus, they have been used as contrast agents in magnetic resonance imaging (MRI) and oncological treatments through different therapies. Besides, due to the vast health problem of multidrug-resistant bacterial infections, several studies have proposed MNPs-Fe as photothermal agents (PTAs) within antibacterial photothermal therapy (PTT). This work presents a quick and easy green synthesis (GS) to obtain MNPs-Fe using orange peel extract from orange waste from local commerce, which presents an environmentally friendly approach compared to traditional methods such as coprecipitation. The GS can be irradiated with microwaves to reduce the synthesis time drastically. We evaluated the weight yield of the GS and the physical-chemical and magnetic features of the synthesized MNPs-Fe. Besides their cytotoxicity in animal cell line ATCC RAW 264.7, their antibacterial activity against Staphylococcus Aureus (S. Aureus) and Escherichia Coli (E. Coli) was assessed. We found that the MNPs-Fe synthesized using the GS, with 50% v/v of NH4OH and 50% v/v of orange peel extract (50GS-MNPs-Fe) had an excellent weight yield, negligible cytotoxicity for concentrations of MNPs-Fe below 250 µg·mL-1 in 24 hours, and 8 days. In the MNPs-Fe surface, we identified a coating of organic molecules (~ 25 nm) such as terpenes, aldehydes, etc. MNPs-Fe inhibited S. Aureus and 2.54 log10 (CFU) of E. Coli under red LED light irradiation (630 nm, 65.5 mW·cm-2, 30 min). Likewise, they exhibited a superparamagnetic (SPM) behavior for temperatures above 60 K, with a size of 49.3±9.6 nm and saturation magnetization (Ms) of 72.83 and 44.16 emu·g-1 at 60 and 300 K, respectively. Therefore, 50GS-MNPs-Fe are excellent candidates as broad-spectrum PTAs in antibacterial PTT, magnetic hyperthermia (MH), or MRI.

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Synthesis and magnetic properties of Ni0.5MgxZn0.5-xFe2O4 (0.0 ≤ x ≤ 0.5) nanocrystalline spinel ferrites

Cited by 20 publications

References 66 publications

Effect of Cu2+ substitution on structure, morphology, and magnetic properties of Mg-Zn spinel ferrite

Effect of Cu2+ substitution on structure, morphology, and magnetic properties of Mg-Zn spinel ferrite

Engineered magnetic oxides nanoparticles as efficient sorbents for wastewater remediation: a review

Anti-Bacterial Iron Oxide Magnetic Nanoparticles based on Orange Peel Extract

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