Impact of GO on Non-stoichiometric Mg0.85 K0.3Fe2O4 Ferrite Nanoparticles

Ateia, Ebtesam E.; Allah, Asmaa Abd; Ramadan, Rania

doi:10.1007/s10948-022-06327-0

Cited by 8 publications

(3 citation statements)

References 44 publications

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“…Conduction mechanisms may be related to small polaron tunneling at low range temperature while related to barrier hopping between Fe 2+ Fe. 3+ at high temperature range [23]…”

Section: Dielectric Propertiesmentioning

confidence: 99%

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Study the multiferroic properties of BiFeO3/Ni0.1Fe2.9O4 for heavy metal removal

Ramadan

2023

Appl. Phys. A

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The import marvel in multiferroic substances is the existence of spontaneous polarization and magnetization which enable these materials meet the needs of technological applications. Multiferroic of BiFeO3 and nickel-doped magnetite was synthesized separately by flash and co-precipitation methods, respectively. The two phases were confirmed by X-ray diffraction (XRD), scanning electron microscope (SEM) and Fourier transformed infrared (FTIR) analysis. The dielectric properties of BiFeO3/Ni0.1Fe2.9O4 nanocomposite were studied as a function of temperature as well as frequency. Based on the frequency dependent of ac conductivity results, it indicated that the conduction occurs through tunneling and small polaron hopping. The composite sample shows excellent results for heavy metal (Cr6+) removal from wastewater as the removal efficiency was reached to 75% at PH 6 after 40 min. The adsorption of Cr (VI) on the surface of nanocomposite was occurred through Langmuir isotherm and follows pseudo-second-order kinetics. The goal and novelty of this work were to investigate the structural, morphological and dielectric as well as magnetic properties of multiferroic nanocomposite material (BiFeO3/Ni0.1Fe2.9O4) and test its efficiency for heavy metal removal.

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“…Conduction mechanisms may be related to small polaron tunneling at low range temperature while related to barrier hopping between Fe 2+ Fe. 3+ at high temperature range [23]…”

Section: Dielectric Propertiesmentioning

confidence: 99%

“…The final precipitate was washed with distilled water and ethanol for several and then dried at 80 °C. This process can be expressed by this equation [23]:…”

Section: Synthesis Of Ni 01 Fe 29 O 4 Nanoparticlesmentioning

confidence: 99%

Study the multiferroic properties of BiFeO3/Ni0.1Fe2.9O4 for heavy metal removal

Ramadan

2023

Appl. Phys. A

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“…Preparation of AgCuO 2 nanoparticles. The sample AgCuO 2 was synthesized using the citrate combustion method 21,22 . As shown in Fig.…”

Section: Experimental Techniquesmentioning

confidence: 99%

A facile novel synthesis of AgCuO2 delafossite nanoparticles and evaluation of their antimicrobial activity

Ateia

Arman

Mohamed

2023

Sci Rep

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Bi-functional nano-oxides are of growing interest to address environmental issues. In the present study, the structural and magnetic data are presented together with the antimicrobial activities (AMA). For the first time, silver delafossite oxide (AgCuO2) is successfully fabricated using a simple, low-cost technique to target antibiotic photodegradation and inactivation of model waterborne pathogens. It is prepared with an equimolar initial Ag+:Cu+ concentration ratio. The structure, morphology, and magnetic properties are studied by different characterization techniques. The size and shape of AgCuO2 NPs, in addition to their structural polytypes of 2H (hexagonal) or 3R (rhombohedral), are dependent on the preparation conditions. The existence of Cu, Ag, and O in the synthesized delafossite AgCuO2 NPs with no evidence of any impurity is ratified by the XPS spectrum. AFM measurements are taken to characterize the surface morphologies of AgCuO2. The distributed spiks are evaluated by roughness kurtosis (Rku). The roughness kurtosis has a value of 2.65 (< 3), indicating that the prepared sample is classified as bumpy. The prepared sample has 13.0, 10.0, 14.0, and 14.0 mm Inhibition Zone Diameter (IZD) antimicrobial activity against gram-positive Bacillus subtilis (B. subtilis), Bacillus cereus (B. cereus), Enterococcus faecalis (E. faecalis), and Staphylococcus aureus (S. aureus), respectively. The IZD for gram-negative Escherichia coli (E. coli), Neisseria Gonorrhoeae (N. Gonorrhoeae), Pseudomonas aeruginosa (P. aeruginosa), and Salmonella typhimrium (S. typhimrium) were found to be 12.0, 13.0, 14.0, and 13.0 mm, respectively. Therefore, the AgCuO2 NPs reveal excellent antimicrobial efficiency, and they can be effortlessly separated using a tiny magnet or a simple magnetic separator. The adequate cytotoxicity and magnetic characteristics of the antimicrobial sample suggest a promising future for it in biomedical applications.

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Comparative analysis of adsorption of Pb(II) ions by different hexagonal nanoferrites synthesized using the flash-combustion method

Ramadan,

Alzaidy,

Almutairi

et al. 2023

Appl. Phys. A

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Impact of GO on Non-stoichiometric Mg0.85 K0.3Fe2O4 Ferrite Nanoparticles

Cited by 8 publications

References 44 publications

Study the multiferroic properties of BiFeO3/Ni0.1Fe2.9O4 for heavy metal removal

Study the multiferroic properties of BiFeO3/Ni0.1Fe2.9O4 for heavy metal removal

A facile novel synthesis of AgCuO2 delafossite nanoparticles and evaluation of their antimicrobial activity

Comparative analysis of adsorption of Pb(II) ions by different hexagonal nanoferrites synthesized using the flash-combustion method

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