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  • Synthesis of magnetic cobalt ferrite nanoparticles with controlled morphology, monodispersity and composition: the influence of solvent, surfactant, reductant and synthetic conditions.

Synthesis of magnetic cobalt ferrite nanoparticles with controlled morphology, monodispersity and composition: the influence of solvent, surfactant, reductant and synthetic conditions.

Nanoscale (2015-11-07)
Le T Lu, Ngo T Dung, Le D Tung, Cao T Thanh, Ong K Quy, Nguyen V Chuc, Shinya Maenosono, Nguyen T K Thanh
ZUSAMMENFASSUNG

In our present work, magnetic cobalt ferrite (CoFe2O4) nanoparticles have been successfully synthesised by thermal decomposition of Fe(III) and Co(II) acetylacetonate compounds in organic solvents in the presence of oleic acid (OA)/ oleylamine (OLA) as surfactants and 1,2-hexadecanediol (HDD) or octadecanol (OCD-ol) as an accelerating agent. As a result, CoFe2O4 nanoparticles of different shapes were tightly controlled in size (range of 4-30 nm) and monodispersity (standard deviation only at ca. 5%). Experimental parameters, such as reaction time, temperature, surfactant concentration, solvent, precursor ratio, and accelerating agent, in particular, the role of HDD, OCD-ol, and OA/OLA have been intensively investigated in detail to discover the best conditions for the synthesis of the above magnetic nanoparticles. The obtained nanoparticles have been successfully applied for producing oriented carbon nanotubes (CNTs), and they have potential to be used in biomedical applications.

MATERIALIEN
Produktnummer
Marke
Produktbeschreibung

Sigma-Aldrich
Ethyl alcohol, Pure, 200 proof, for molecular biology
Sigma-Aldrich
Ethyl alcohol, Pure, 200 proof, ACS reagent, ≥99.5%
Sigma-Aldrich
Chloroform, contains 100-200 ppm amylenes as stabilizer, ≥99.5%
Sigma-Aldrich
Toluol, ACS reagent, ≥99.5%
Sigma-Aldrich
Ethyl alcohol, Pure, 200 proof, meets USP testing specifications
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Hexan, ReagentPlus®, ≥99%
Sigma-Aldrich
Oleylamin, technical grade, 70%
Sigma-Aldrich
Chloroform, contains ethanol as stabilizer, ACS reagent, ≥99.8%
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Ethyl alcohol, Pure, 190 proof, for molecular biology
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Oleinsäure, technical grade, 90%
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Hexan, Laboratory Reagent, ≥95%
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1-Octadecen, technical grade, 90%
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Toluol, anhydrous, 99.8%
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Chloroform, ReagentPlus®, ≥99.8%, contains 0.5-1.0% ethanol as stabilizer
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Ethanol, purum, absolute ethanol, denaturated with 4.8% isopropanol, A15 IPA1, ≥99.8% (based on denaturant-free substance)
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Chloroform, contains amylenes as stabilizer, ACS reagent, ≥99.8%
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Oleinsäure, BioReagent, suitable for cell culture
Sigma-Aldrich
Chloroform, ACS spectrophotometric grade, ≥99.8%, contains 0.5-1.0% ethanol as stabilizer
SAFC
Oleylamin, ≥98% (primary amine)
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Chloroform, biotech. grade, ≥99.8%, contains 0.5-1.0% ethanol as stabilizer
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Toluol, ACS reagent, ≥99.5%
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Oleinsäure, natural, FCC
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Oleinsäure, meets analytical specification of Ph, Eur., 65.0-88.0% (GC)
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Oleinsäure, ≥99% (GC)
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Ethyl alcohol, Pure, 190 proof, ACS spectrophotometric grade, 95.0%
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Chloroform, contains ethanol as stabilizer, meets analytical specification of BP, 99-99.4% (GC)
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Chloroform, anhydrous, ≥99%, contains 0.5-1.0% ethanol as stabilizer
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Dioctylether, 99%
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Ethanol, purum, fine spirit, denaturated with 4.8% methanol, F25 METHYL1, ~96% (based on denaturant-free substance)
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1-Octadecanol, ReagentPlus®, 99%