One-pot synthesis of Fe-Co nanospheres by modified polyol process and their structural, magnetic studies

Suresh, G.; Saravanan, P.; Babu, D. Rajan

doi:10.1088/1742-6596/292/1/012015

Cited by 4 publications

(4 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Bimetallic Fe-Co nanoparticles have been recognized as an excellent material with distinctive properties such as high saturation magnetization, good strength and large permeability [7]. Owing to its unique and superior characteristics, various synthetic protocols have been reported for the production of Fe-Co nanoparticles including sonochemical [8], induction plasma torch [9], hydrothermal [10], polyol [11] and surfactant assisted ball-milling technique [12]. However, most of these routes suffer relentless drawbacks such as the use of hazardous and toxic chemicals [13].…”

Section: Introductionmentioning

confidence: 99%

Facile Synthesis and Characterization of Fe-Co Nanoparticles Supported Silica Rice Husk

Andas

Rosdi

Anuar

2016

KEM

View full text Add to dashboard Cite

A series of Fe-Co nanoparticles were synthesized via sol-gel route at acidic, neutral and basic condition using rice husk as the silica source. The synthesized nanomaterials were designated as Fe-Co3, Fe-Co7 and Fe-Co9 and characterized by Fourier Transform Infrared (FTIR), Transmission Electron Microscope (TEM) and particle size analyzer. The great effect of pH was clearly evidenced from the shifting in the siloxane bond in the FTIR spectrum. TEM investigation confirmed the existence of discrete and almost sphere like nanoparticles. The particle size decreased with an increase in the pH, registering the smallest average particle size at pH 9. In brief, this study promises a fast, rapid and promising method for the conversion of silica rice husk into nanoscale bimetallic materials.

show abstract

Section: Introductionmentioning

confidence: 99%

Facile Synthesis and Characterization of Fe-Co Nanoparticles Supported Silica Rice Husk

Andas

Rosdi

Anuar

2016

KEM

View full text Add to dashboard Cite

show abstract

“…Magnetic nanoparticles are a topic of growing interest because of their versatile applications such as ultrahigh density data storage, drug delivery, magnetic separation and MRI contrast enhancement [1][2][3][4][5][6][7][8][9][10][11][12][13]. Among those, magnetic hyperthermia is a novel therapeutic method in which the magnetic nanoparticles are subjected to an alternating magnetic field to generate a specific amount of heat.…”

Section: Introductionmentioning

confidence: 99%

“…FeCo alloy has the highest saturation magnetization among all binary magnetic alloys [1]. Several methods have been used to synthesize FeCo alloy nanoparticles which include arc discharge [2], polyol [3][4][5][6][7], hydrothermal [8], reaction under autogenic pressure at elevated temperature (RAPET) [9], thermal decomposition [10], wet chemical [11,12], and coprecipitation [13,17,18]. The morphology and size distribution of as-synthesized nanoparticles are not well controlled in most of these processes.…”

Section: Introductionmentioning

confidence: 99%

Size Controlled Synthesis of FeCo Alloy Nanoparticles and Study of the Particle Size and Distribution Effects on Magnetic Properties

Shokuhfar

Afghahi

2014

Advances in Materials Science and Engineering

View full text Add to dashboard Cite

In this research the size controlled synthesis of FeCo nanoparticles was done using a quaternary microemulsion system. X-ray diffraction and high resolution transmission electron microscopy of as-synthesized nanoparticles confirm the formation of FeCo alloy nanoparticles. The effects of two process parameters, namely, water to surfactant molar ratio and molar concentration of metal salts, on the size and size distribution of nanoparticles were discussed by the aid of transmission electron microscopy. The size dependency of magnetic properties was also investigated using a room temperature vibrating sample magnetometer. The superparamagnetic-ferromagnetic and single domain-multidomain transition sizes were determined. Then the specific absorption rates at transition sizes were calculated and the best sample for magnetic hyperthermia treatment was introduced.

show abstract

“…Till now, several methods have been used to synthesize FeCo alloy nanoparticles which include arc discharge [ 21 ], polyol [ 2 ], hydrothermal process [ 6 ], RAPET [ 7 ], thermal decomposition [ 9 ], wet chemical methods [ 10 , 11 ], and co-precipitation [ 13 ]. The morphology and size distribution of as-synthesized nanoparticles are not well controlled in most of these processes.…”

Section: Introductionmentioning

confidence: 99%

The heating effect of iron-cobalt magnetic nanofluids in an alternating magnetic field: application in magnetic hyperthermia treatment

Shokuhfar

Afghahi

2013

Nanoscale Res Lett

View full text Add to dashboard Cite

In this research, FeCo alloy magnetic nanofluids were prepared by reducing iron(III) chloride hexahydrate and cobalt(II) sulfate heptahydrate with sodium borohydride in a water/CTAB/hexanol reverse micelle system for application in magnetic hyperthermia treatment. X-ray diffraction, electron microscopy, selected area electron diffraction, and energy-dispersive analysis indicate the formation of bcc-structured iron-cobalt alloy. Magnetic property assessment of nanoparticles reveals that some samples are single-domain superparamagnetic, while others are single- or multi-domain ferromagnetic. The stability of the magnetic fluids was achieved by using a CTAB/1-butanol surfactant bilayer. Results of Gouy magnetic susceptibility balance experiments indicate good stability of FeCo nanoparticles even after dilution. The inductive properties of corresponding magnetic fluids including temperature rise and specific absorption rate were determined. Results show that with increasing of the nanoparticle size in the single-domain size regime, the generated heat increases, indicating the significant effect of the hysteresis loss. Finally, the central parameter controlling the specific absorption rate of nanoparticles was introduced, the experimental results were compared with those of the Stoner-Wohlfarth model and linear response theory, and the best sample for magnetic hyperthermia treatment was specified.

show abstract

One-pot synthesis of Fe-Co nanospheres by modified polyol process and their structural, magnetic studies

Cited by 4 publications

References 29 publications

Facile Synthesis and Characterization of Fe-Co Nanoparticles Supported Silica Rice Husk

Facile Synthesis and Characterization of Fe-Co Nanoparticles Supported Silica Rice Husk

Size Controlled Synthesis of FeCo Alloy Nanoparticles and Study of the Particle Size and Distribution Effects on Magnetic Properties

The heating effect of iron-cobalt magnetic nanofluids in an alternating magnetic field: application in magnetic hyperthermia treatment

Contact Info

Product

Resources

About