Influence of Silver Nanoferrite and Nanochromite on Physical Properties for High-Frequency and Biomedical Applications

El-Bassuony, Asmaa A. H.; Gamal, W. M.; Abdelsalam, H. K.

doi:10.1007/s11837-022-05315-y

Cited by 13 publications

(6 citation statements)

References 43 publications

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“…It can be manufactured biologically, anthropogenically, and geologically in erosion, volcanoes, fires of forests, burning of charcoal, and industry [ 12 ]. Moreover, nanoparticles can be prepared by different methods such as the solid-state method and wet methods [ 13 – 17 ]. The easy, low cost, rapid, save time and give high yield method is the Flash auto-combustion technique in which all the investigated samples have been prepared with it [ 18 – 22 ].…”

Section: Introductionmentioning

confidence: 99%

Attractive study of the antimicrobial, antiviral, and cytotoxic activity of novel synthesized silver chromite nanocomposites

et al. 2022

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Antibiotic resistance is a global problem. This is the reason why scientists search for alternative treatments. In this regard, seven novel silver chromite nanocomposites were synthesized and assayed to evaluate their antimicrobial, antiviral, and cytotoxic activity. Five bacterial species were used in this study: three Gram-positive (Bacillus subtilis, Micrococcus luteus, and Staphylococcus aureus) and two Gram-negative (Escherichia coli and Salmonella enterica). Three fungal species were also tested: Candida albicans, Aspergillus niger, and A. flavus. The MIC of the tested compounds was determined using the bifold serial dilution method. The tested compounds showed good antibacterial activity. Maximum antibacterial activity was attained in the case of 15 N [Cobalt Ferrite (0.3 CoFe2O4) + Silver chromite (0.7 Ag0.5Cr2.5O4)] against M. luteus. Concerning antifungal activity, C. albicans was the most susceptible fungal species. The maximum inhibition was recorded also in case of 15 N [Cobalt Ferrite (0.3 CoFe2O4) + Silver chromite (0.7 Ag0.5Cr2.5O4)]. The most promising antimicrobial compound 15 N [Cobalt Ferrite (0.3 CoFe2O4) + Silver chromite (0.7 Ag0.5Cr2.5O4)] was assayed for its antiviral and cytotoxic activity. The tested compound showed weak antiviral activity. The cytotoxic activity against Mammalian cells from African Green Monkey Kidney (Vero) cells was detected. The inhibitory effect against Hepatocellular carcinoma cells was detected using a MTT assay. The antimicrobial effect of the tested compounds depends on the tested microbial species. The tested compounds could be attractive and alternative antibacterial compounds that open a new path in chemotherapy.

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Section: Introductionmentioning

confidence: 99%

Attractive study of the antimicrobial, antiviral, and cytotoxic activity of novel synthesized silver chromite nanocomposites

et al. 2022

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“…The third peak in the DSC curve may be due to recrystallization or redistribution of cations. 42 TG-DSC results confirmed that the thermal plasma synthesis HEO nanoparticle exhibits a single phase up to 300 °C; beyond that, a secondary phase was formed. XRD patterns were examined to find the crystal structure of the as-synthesized and annealed HEO powders, as displayed in Figure 3a.…”

Section: Resultsmentioning

confidence: 53%

A Novel Strategy for Rapid Synthesis of Nanostructured High-Entropy Metal Oxides through Thermal Plasma for Supercapacitor Applications

Pasupathi,

Subramaniam

2024

Energy Fuels

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High-entropy oxides (HEOs) are an emerging candidate of materials that has sparked increased attention in the field of sustainable energy because of their unique structure, tailorable chemical composition, and tunable physical, chemical, and functional properties. In this work, phase-pure HEO (Mn, Fe, Co, Ni, Cu) 3 O 4 nanoparticles were synthesized using thermal plasma under optimum processing conditions at 11 kW input power with argon and carbon dioxide as the plasma-forming gases. Assynthesized powders were annealed at different temperatures (200 to 500 °C) and subjected to structural characterization. The electrochemical energy storage performance of HEO nanoparticles was investigated via a conventional three-electrode setup in 1 M KOH electrolyte solution. For 0.5 A g −1 current density, the HEO electrode displayed a specific capacitance of 431 F g −1 . Capacitance retention and Coulombic efficiency were found to be 79.5 and 91.8% after 10,000 cycles of 3 A g −1 current density, respectively. This study provides a novel insight on the rapid production of phase-pure HEO nanoparticles through thermal plasma, with a propitious production rate of around 1.5 g/min.

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“…8 . The operational frequency was estimated as follows [ 36 , 37 ]: where γ = 2.8 MHz/G is the gyromagnetic ratio. Table 3 summarizes the results.…”

Section: Resultsmentioning

confidence: 99%

Impact of different magnetic materials added to silver–magnetite nanoparticles on the structural, magnetic and antimicrobial properties

El-Bassuony

Gamal

Abdelsalam

2023

Eur. Phys. J. Spec. Top.

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Different magnetic materials of spinel copper and cobalt nanoferrites added to silver–magnetite nanoparticles were fabricated by a facile, low cost, and rapid auto-combustion method to form a nanocomposite. X-ray diffraction patterns and atomic force microscopy were studied for the investigated samples and confirmed their nanosize range. Adding cobalt nanoferrite to silver–magnetite (CoAF) yielded a more pronounced effect in the magnetic measurements than adding copper nanoferrite (CuAF). This result was attributed to the much higher coercivity Hc and saturation magnetization Ms (5.7-fold and 2.8-fold, respectively) of CoAF than CuAF; accordingly, the CoAF nanocomposite can be applied to a permanent magnet. Next, the operating frequencies of the nanocomposites were calculated from the magnetic measurements. The CoAF and CuAF nanocomposites were applicable in the microwave super-high-frequency C-band and the microwave super-high-frequency S-band, respectively. Both nanocomposites were ineffective against the tested fungi but showed strong antimicrobial activities against the tested Gram-positive and Gram-negative bacteria. Thus, CoAF and CuAF nanocomposites are potential antibacterial nanomaterials for biomedical applications.

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Influence of Silver Nanoferrite and Nanochromite on Physical Properties for High-Frequency and Biomedical Applications

Cited by 13 publications

References 43 publications

Attractive study of the antimicrobial, antiviral, and cytotoxic activity of novel synthesized silver chromite nanocomposites

Attractive study of the antimicrobial, antiviral, and cytotoxic activity of novel synthesized silver chromite nanocomposites

A Novel Strategy for Rapid Synthesis of Nanostructured High-Entropy Metal Oxides through Thermal Plasma for Supercapacitor Applications

Impact of different magnetic materials added to silver–magnetite nanoparticles on the structural, magnetic and antimicrobial properties

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