Manganese-Zinc Spinel Ferrite Nanoparticles and Ferrofluids

Singh, Ramesh; Thirupathi, G.

doi:10.5772/66522

Cited by 12 publications

(7 citation statements)

References 53 publications

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“…The classic problem that causes difficulty in attaining stable ferrofluids is the tendency of Fe 3 O 4 to agglomerate as a result of van der Waals forces [18], which interfere with the single-domain formation of magnetic nanoparticles. Thus far, to solve such problems, extensive effort has been devoted to coating the fillers in ferrofluids with various surfactants, such as oleic acid [13], other carboxylic acids [19], and tetramethylammonium ion [20], using a monolayer technique. In principle, surfactants were subject to coat magnetic nanoparticle fillers so that they remain stable under an external magnetic field [21].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Fe3O4/Ag nanohybrid ferrofluids and their applications as antimicrobial and antifibrotic agents

Taufiq

Saputro

Susanto

et al. 2020

Heliyon

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To date, the search for creating stable ferrofluids with excellent properties for biomedical application is one of the challenging scientific and practical investigations. In this study, novel Fe 3 O 4 /Ag nanohybrid ferrofluids from iron sand were synthesized using a double-layer method. The Fe 3 O 4 /Ag nanocomposites exhibited stable crystallite sizes of 11.8 12.1 nm and 36.8-37.2 nm for Fe 3 O 4 and Ag, respectively. The lattice parameters of the spinel structure Fe 3 O 4 and face-centered cubic Ag were respectively 8.344 Å and 4.091 Å. With increasing Ag amount, the crystallite phase of Ag in the nanocomposites increased from 40.2% to 77.2%. The XPS results confirmed that Fe 3 O 4 /Ag nanocomposites were successfully prepared, where Fe 3 O 4 mixed well with Ag via strong ionic bonding. The FTIR results confirmed the presence of Fe 3 O 4 /Ag, oleic acid, and dimethyl sulfoxide as the filler, first layer, and second layer, respectively. The as-prepared ferrofluids exhibited superparamagnetic behavior, where the saturation magnetization decreased with increasing Ag content. The Fe 3 O 4 /Ag nanohybrid ferrofluids exhibited excellent antimicrobial performance against Bacillus subtilis, Staphylococcus aureus, Escherichia coli, and Candida albicans. More importantly, the Fe 3 O 4 /Ag nanohybrid ferrofluids decreased the progression of liver fibrosisrelated inflammation and fibrogenic activity on hepatic stellate cells.

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Section: Introductionmentioning

confidence: 99%

Synthesis of Fe3O4/Ag nanohybrid ferrofluids and their applications as antimicrobial and antifibrotic agents

Taufiq

Saputro

Susanto

et al. 2020

Heliyon

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“…Aside from ferrite nanoparticles, metal oxide nanoparticles have intrigued much attention due to their surface area to volume ratios and magnetic properties, which are wholly distinct from their corresponding bulk material. According to magnetic and crystal properties ferrites can be garnet, spinel, orthoferrite or hexaferrite [2][3][4][5]. Among them, ferrite nanoparticles synthesized with transition metal with spinel structure have been given special attention due to their well-known magnetic, catalytic, high adsorption, optical and electronic properties [6].…”

Section: Imentioning

confidence: 99%

Zn-based Nanomaterials for Antimicrobial Applications: A Short Review

Badabagnia¹,

Devanna²

2023

IJRASET

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In recent past, the investigations on antimicrobial activity of metal-based nanoparticles gained significant interest by implantation of nanotechnology to synthesize the nanoparticles in nanoregion due to their high surface area and high reactivity. Especially, the antimicrobial agents play a pivotal role in various fields where the biological contamination occurs. For instance, microbes control the control the contamination of food in food packaging, in textile industry they can restrict the growth of microorganisms owing to sweat, in medicine they can reduce the risk of contamination in invasive and routine interventions. Owing to their enhanced specific surface area as reduced particle size lead to improved surface activity, zinc based nano particles exhibit good antimicrobial properties. Further, zinc oxide is ecofriendly material which impacts photocatalysis and photo oxidizing on biological and chemical species. This review focused on recent advancements in zinc based nano materials for antimicrobial applications. Specifically, this briefly discussed the various synthesis techniques, shape of various materials, different dopants that enhance the antimicrobial activity of zinc oxide along with antimicrobial properties of those materials.

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“…Therefore, linear and nonlinear optical properties of ferrofluids based on manganese–zinc ferrite (Mn 0.5 Zn 0.5 Fe 2 O 4 ) nanoparticles, containing nanoparticles of spherical and cubic shapes, were studied studied in this work. Manganese–zinc ferrite nanoparticles compose a highly interesting system due to remarkable magnetic properties, as its low Curie temperature, high saturation magnetization at low applied magnetic field, as well as a high pyromagnetic coefficient, that is, the magnetization change rate depending on the temperature in the temperature range from 300 to 450 K. − Therefore, since the system is interesting from the magnetic point of view, being suitable for applications as a coolant for transformers, the combination of optical measurements and magnetic properties of magnetic nanoparticles benefits from the special response due to the presence of static magnetic field. In addition, effects of external uniform magnetic fields over these properties were studied in order to characterize the NLO parameter anisotropy and the influence of the nanoparticle shape on the anisotropy magnitude.…”

Section: Introductionmentioning

confidence: 99%

Influence of Magnetic Field on the Two-Photon Absorption and Hyper-Rayleigh Scattering of Manganese–Zinc Ferrite Nanoparticles

et al. 2020

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Magnetic nanoparticles based on manganese–zinc ferrite presenting spherical and cubic shapes, verified by small-angle X-rays scattering, were studied by means of the hyper-Rayleigh scattering, the Z-Scan technique in the open-aperture configuration, and a spectrally resolved femtosecond transient absorption setup. Hyper-Rayleigh scattering and Z-Scan experiments were performed with applied magnetic field parallel to the laser polarization state and in the perpendicular direction. The hyperpolarizability of spherical nanoparticles was greater than the cubic ones due to the higher volume of spherical nanoparticles and, therefore, the increased influence of the spin-disoriented layer at the surface on cubic nanoparticles, resulting in a smaller orientational average contribution to the hyperpolarizability. The two-photon absorption cross section was the same for both samples, since the basic constituents are the same and the light absorption is not influenced by the surface anisotropy present on magnetic nanoparticles. For both nanoparticles, the measured optical second harmonic and the nonlinear absorption increased during experiments performed in the presence of external field in the parallel configuration, while a decrease was verified for experiments in the perpendicular case, which demonstrates a crystalline anisotropy on the nonlinear optical properties. Transient absorption measurements revealed an ultrafast relaxation process containing at least two separated dynamical processes, the faster with characteristic time below 1 ps and a longer one, much higher than 100 ps.

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Manganese-Zinc Spinel Ferrite Nanoparticles and Ferrofluids

Cited by 12 publications

References 53 publications

Synthesis of Fe3O4/Ag nanohybrid ferrofluids and their applications as antimicrobial and antifibrotic agents

Synthesis of Fe3O4/Ag nanohybrid ferrofluids and their applications as antimicrobial and antifibrotic agents

Zn-based Nanomaterials for Antimicrobial Applications: A Short Review

Influence of Magnetic Field on the Two-Photon Absorption and Hyper-Rayleigh Scattering of Manganese–Zinc Ferrite Nanoparticles

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