Production of single phase nano size NiFe2O4 particles using sol–gel auto combustion route by optimizing the preparation conditions

Pradeep, A. M.; Priyadharsini, P.; Chandrasekaran, G.

doi:10.1016/j.matchemphys.2008.05.090

Cited by 93 publications

(31 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The SEM micrograph in Fig. 3a shows the presence of NiFe 2 O 4 nanoparticles with grain sizes of 100-150 nm, which is larger than the former report [26]. Obviously, NiFe 2 O 4 nanoparticles are aggregated together heavily.…”

Section: Semmentioning

confidence: 62%

Novel magnetic NiFe2O4/multi-walled carbon nanotubes hybrids: Facile synthesis, characterization, and application to the treatment of dyeing wastewater

Zhu

Jiang

Huang

et al. 2015

Ceramics International

View full text Add to dashboard Cite

Section: Semmentioning

confidence: 62%

Novel magnetic NiFe2O4/multi-walled carbon nanotubes hybrids: Facile synthesis, characterization, and application to the treatment of dyeing wastewater

Zhu

Jiang

Huang

et al. 2015

Ceramics International

View full text Add to dashboard Cite

“…Pradeep et al [26] have suggested that with ammonia solution added to the sol in the synthesis of nickel ferrite by sol-gel auto-combustion route, NH 4 NO 3 would be formed in the dried gel from nitrate ions of metal nitrates and NH 4 which is formed by liberation of O-H from ammonia solution. With increment of the amount of citric acid addition in the sol, the amount of added ammonia for fixing the pH value at 7 would be increased; therefore, the amount of formed NH 4 NO 3 would be higher that could provide higher combustion intensities.…”

Section: Resultsmentioning

confidence: 99%

“…With increment of the amount of citric acid addition in the sol, the amount of added ammonia for fixing the pH value at 7 would be increased; therefore, the amount of formed NH 4 NO 3 would be higher that could provide higher combustion intensities. The presence of higher amount of NH 4 NO 3 would increase the rate of combustion, and higher amount of heat would be released [26] since NH 4 NO 3 acts as the combustion aid [27]. Also the chelation behavior of the metal ions with citrate would be improved in comparison with sample S0.5 that could improve the combustion behavior.…”

Section: Resultsmentioning

confidence: 99%

Effect of fuel-to-oxidant ratio on phase constituents, microstructure and magnetic properties of NiFe2O4-based composite nanopowder synthesized by sol–gel auto-combustion method

Alamolhoda

Mirkazemi

Benvidi

et al. 2015

J Sol-Gel Sci Technol

View full text Add to dashboard Cite

In this research, NiFe 2 O 4 -based composite nanopowder with 0.8, 1, 1.35, 1.7 fuel-to-oxidant (F/O) ratios was synthesized by sol-gel auto-combustion method. Changes in phase constituents, microstructure and magnetic properties due to changes in F/O ratios were evaluated by X-ray diffraction (XRD), Raman spectroscopy, field emission scanning electron microscope (FESEM) and vibrating sample magnetometer (VSM) techniques. XRD and Raman spectroscopy results show the presence of NiFe 2 O 4 , FeNi 3 , a-Fe 2 O 3 and NiO phases. The amount of nickel ferrite was increased, while the amount of FeNi 3 was decreased with increasing F/O ratio from 0.8 to 1.35. Mean crystallite sizes of the samples are in the range of 40-46 nm. FESEM studies depicted the formation of NiFe 2 O 4 particles coexisting with FeNi 3 phase. Changes in F/O ratios alter the saturation magnetization values from 37 to 60 emu/g as a result of changes in FeNi 3 and NiFe 2 O 4 amounts. Coercivity values are in the range of 135-177Oe. Graphical Abstract In this research nano-sized NiFe 2 O 4 powders with 0.8, 1, 1.35, 1.7 Fuel to Oxidant (F/O) ratios were synthesized by sol-gel auto-combustion method. FESEM studies depicted the formation of NiFe 2 O 4 particles coexisting with FeNi 3 phase. Changes in F/O ratios alter the saturation magnetization values from 37 to 60emu/g as a result of changes in FeNi 3 and NiFe 2 O 4 amounts. Coercivity values are in the range of 135 to 177Oe.

show abstract

“…The formation of self-assembled bead could be due to the polymer and radical reaction in the solution by acoustic cavitation. 100 nm × 300 nm) shaped morphology was observed which is due to the enhanced growth kinetics and chemical activity by acoustics (Fig.2c) [26][27][28]. CoFe 2 O 4 , nanocrystals can be prepared with a controlled shape of nearly spherical or cubic shape of the CoFe 2 O 4 .…”

Section: Sem Analysismentioning

confidence: 91%

Enhanced magnetic properties of polymer-magnetic nanostructures synthesized by ultrasonication

Arul

Manikandan

Murmu

et al. 2017

Journal of Alloys and Compounds

View full text Add to dashboard Cite

Polymer based nickel (Ni) and cobalt (Co) co-doped ferrites were prepared by adept ultrasonication route. Different concentrations of polymer [polyvinyl alcohol (PVA)] (0.2 g and 0.5 g) was added as a surfactant to the magnetic particles. The phase purity of Ni-Co ferrites (spinel structure) was confirmed by X-ray diffraction (XRD). Enhanced saturation magnetization of polymer based magnetic nanoparticles due to shape anisotropy and size. 0.2 wt% doped ferrite showed superparamagnetic characteristics with blocking temperature above room temperature. Hence, ultrasonication route is a rapid and effective technique for tailoring size and morphology of magnetic nanostructure that could be useful in magneticsensor applications.

show abstract

Production of single phase nano size NiFe2O4 particles using sol–gel auto combustion route by optimizing the preparation conditions

Cited by 93 publications

References 23 publications

Novel magnetic NiFe2O4/multi-walled carbon nanotubes hybrids: Facile synthesis, characterization, and application to the treatment of dyeing wastewater

Novel magnetic NiFe2O4/multi-walled carbon nanotubes hybrids: Facile synthesis, characterization, and application to the treatment of dyeing wastewater

Effect of fuel-to-oxidant ratio on phase constituents, microstructure and magnetic properties of NiFe2O4-based composite nanopowder synthesized by sol–gel auto-combustion method

Enhanced magnetic properties of polymer-magnetic nanostructures synthesized by ultrasonication

Contact Info

Product

Resources

About