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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
ABSTRACT

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.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Ethyl alcohol, Pure, 200 proof, anhydrous, ≥99.5%
Sigma-Aldrich
Oleic acid, natural, FCC
Sigma-Aldrich
Hexane, puriss. p.a., ACS reagent, ≥99.0% (GC)
Sigma-Aldrich
1-Octadecanol, ReagentPlus®, 99%
Sigma-Aldrich
Oleic acid, technical grade, 90%
Sigma-Aldrich
Oleylamine, technical grade, 70%
Sigma-Aldrich
1,2-Hexadecanediol, technical grade, 90%
Sigma-Aldrich
Ethyl alcohol, Pure, 190 proof, ACS spectrophotometric grade, 95.0%
Sigma-Aldrich
1-Octadecene, technical grade, 90%
Sigma-Aldrich
1-Octadecanol, 95%
Sigma-Aldrich
Oleic acid, meets analytical specification of Ph, Eur., 65.0-88.0% (GC)
Sigma-Aldrich
Toluene, anhydrous, 99.8%
Sigma-Aldrich
Oleic acid, ≥99% (GC)
Sigma-Aldrich
Oleic acid, BioReagent, suitable for cell culture
Sigma-Aldrich
Ethanol, ACS reagent, prima fine spirit, without additive, F15 o1
Sigma-Aldrich
Ethyl alcohol, Pure, 200 proof, meets USP testing specifications
Sigma-Aldrich
Toluene, suitable for HPLC, ≥99.9%
Sigma-Aldrich
Toluene, ACS reagent, ≥99.5%
Sigma-Aldrich
Hexane, puriss. p.a., ACS reagent, reag. Ph. Eur., ≥99% (GC)
Sigma-Aldrich
Hexane, anhydrous, 95%
Sigma-Aldrich
Hexane, HPLC Plus, for HPLC, GC, and residue analysis, ≥95%
Sigma-Aldrich
Ethyl alcohol, Pure 200 proof, for molecular biology
Sigma-Aldrich
Toluene, Laboratory Reagent, ≥99.3%
Sigma-Aldrich
Hexane, Laboratory Reagent, ≥95%
Sigma-Aldrich
Toluene, puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., ≥99.7% (GC)
Sigma-Aldrich
Ethyl alcohol, Pure, 200 proof
Sigma-Aldrich
1-Octadecene, ≥95.0% (GC)
Sigma-Aldrich
Toluene, ACS reagent, ≥99.5%
Sigma-Aldrich
Ethyl alcohol, Pure, 200 proof, ACS reagent, ≥99.5%
Sigma-Aldrich
Ethanol, puriss. p.a., absolute, ≥99.8% (GC)