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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
Toluene, ACS reagent, ≥99.5%
Sigma-Aldrich
Hexane, ReagentPlus®, ≥99%
Sigma-Aldrich
Ethanol, purum, absolute ethanol, denaturated with 2% 2-butanone, A15 MEK1, ≥99.8% (based on denaturant-free substance)
Sigma-Aldrich
Hexane, JIS special grade, ≥96.0%
Sigma-Aldrich
Ethanol, ≥99.5%
Sigma-Aldrich
Hexane, suitable for HPLC
Sigma-Aldrich
Hexane, for residue analysis, JIS 5000
Sigma-Aldrich
Oleic acid, SAJ first grade, ≥70.0%
Sigma-Aldrich
Toluene, JIS special grade, ≥99.5%
Sigma-Aldrich
Ethanol, JIS 300, ≥99.5%, for residue analysis
Sigma-Aldrich
Toluene, SAJ first grade, ≥99.0%
Sigma-Aldrich
Hexane, JIS 1000, ≥96.0%, for residue analysis
Sigma-Aldrich
Ethanol, JIS 1000, ≥99.5%, for residue analysis
Sigma-Aldrich
Ethanol, ≥99.5%, suitable for absorption spectrum analysis
Sigma-Aldrich
Toluene, JIS 300, for residue analysis, ≥99.8%
Sigma-Aldrich
Ethanol, ≥99.5%, suitable for HPLC
Sigma-Aldrich
Toluene, JIS 1000, for residue analysis, ≥99.8%
Sigma-Aldrich
Ethanol, ≥99.5%, suitable for fluorescence
Sigma-Aldrich
Ethanol, ≥99.5%, SAJ super special grade
Sigma-Aldrich
Hexane, ≥96.0%, suitable for residual phthalate analysis
Sigma-Aldrich
Hexane, SAJ first grade, ≥95.0%
Sigma-Aldrich
Hexane, HPLC Plus, for HPLC, GC, and residue analysis, ≥95%
Sigma-Aldrich
Ethyl alcohol, Pure, 200 proof, anhydrous, ≥99.5%
Sigma-Aldrich
1-Octadecene, ≥95.0% (GC)
Sigma-Aldrich
Ethyl alcohol, Pure, 190 proof, meets USP testing specifications
Sigma-Aldrich
Oleic acid, natural, FCC
Sigma-Aldrich
Oleic acid, meets analytical specification of Ph, Eur., 65.0-88.0% (GC)
Supelco
Toluene, HPLC grade, 99.8%
Sigma-Aldrich
Oleic acid, technical grade, 90%
Sigma-Aldrich
Oleylamine, technical grade, 70%