Biosynthesis of spinel nickel ferrite nanowhiskers and their biomedical applications

Abstract

Greener methods for the synthesis of various nanostructures with well-organized characteristics and biomedical applicability have demonstrated several advantages, including simplicity, low toxicity, cost-effectiveness, and eco-friendliness. Spinel nickel ferrite (NiFe2O4) nanowhiskers with rod-like structures were synthesized using a simple and green method; these nanostructures were evaluated by X-ray diffraction analysis, transmission electron microscopy, scanning electron microscopy, and X-ray energy diffraction spectroscopy. Additionally, the prepared nanowhiskers could significantly reduce the survival of Leishmania major promastigotes, at a concentration of 500 μg/mL; the survival of promastigotes was reduced to ≃ 26%. According to the results obtained from MTT test (in vitro), it can be proposed that further studies should be conducted to evaluate anti-leishmaniasis activity of these types of nanowhiskers in animal models.

Tunable Dielectric Properties of Nickel Ferrite Derived via Crystallographic Site Preferential Cation Substitution

“…Nickel ferrite (NiFe 2 O 4 ; NFO) is one of the metal-oxide-based soft magnetic materials owing to its high magnetization at low magnetic fields and low coercive force. , The physical, chemical, and electromagnetic properties of NFO and NFO-based composites are attractive for utilization in numerous scientific and technological applications. − Due to the intrinsic nature of NFO, it has been employed as a suitable active material in a wide range of applications, which include electronic memory, biomedical sensors and actuators, telecommunication, electromagnetic interference (EMI) shielding, catalysis, energy storage, and high-frequency electromagnetic devices. − The recent attention to the intrinsic and doped NFO materials is primarily due to the possibility of the design and development of their nanoscale architectures for utilization in electromagnetics, electrochemical energy storage and conversion technologies, and biomedical applications. − Additionally, using intrinsic or doped NFO in multilayered structures or in conjunction with polymers has been proposed to design highly efficient EMI shielding materials . For instance, the EMI absorber materials designed by means of a multilayer assembly of poly­(vinylidene fluoride)-containing Zn-doped NFO have shown to increase the EMI shielding effectiveness dramatically .…”

“…Therefore, understanding the electrical, magnetic, and dielectric properties of intrinsic and doped NFO nanomaterials warrants further investigations. Furthermore, compared to bulk materials, transition-metal-based engineered nanostructured materials are expected to provide excellent opportunities to tailor and/or manipulate the quantum effects and thereby derive novel electrical, optical, and magnetic properties. − …”

Plant‐Mediated Green Synthesis of Magnetic Spinel Ferrite Nanoparticles: A Sustainable Trend in Nanotechnology

“…Alijani et al. [ 118 ] reported their work entitled “Biosynthesis of spinel nickel ferrite nanowhiskers and their biomedical applications.” A simple and green technique was used to synthesize NiFe 2 O 4 nanowhiskers with rod‐like structures in one step, using rosemary phenolic extract ( Scheme ). The crystal and fuzzy structure of the synthesized nickel‐ferrite nanostructures in the range 10°–70° is shown in Figure .…”

Magnetic properties, magnetocaloric effect, and critical behaviors in Co1−xCrxFe2O4

“…Over the past few decades, research on iron oxide compounds like spinel ferrite, hexaferrite, and garnet has become a topic of discussion among scientists, due to their attractive practical applications in magneto-sensing devices, and biotechnology. [1][2][3][4][5][6][7] These key topics attracted scientists because these types of compounds exhibit unique magnetic and magnetocaloric effects (MCE). [1][2][3][8][9][10] Among all the ferrites, CoFe 2 O 4 (COF) has been focused on in recent years by academia, the medical sector, and industry due to its remarkable magnetic and MCE properties.…”

“…[1][2][3][4][5][6][7] These key topics attracted scientists because these types of compounds exhibit unique magnetic and magnetocaloric effects (MCE). [1][2][3][8][9][10] Among all the ferrites, CoFe 2 O 4 (COF) has been focused on in recent years by academia, the medical sector, and industry due to its remarkable magnetic and MCE properties. [11][12][13][14][15][16][17][18][19] The structural, magnetic, and MCE properties of COF can be tuned by doping/substituting divalent or trivalent cations.…”