Water Dispersible Fe/Fe-Oxide Core-Shell Structured Nanoparticles for Potential Biomedical Applications

In this paper, we report the synthesis and characterization of water dispersible core-shell structured Fe/Fe-oxide with average size 13 plusmn1.4 nm and Fe-oxide nanoparticles. Unlike the previously reported different approaches, both types of particles can be synthesized by following the same route...

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Veröffentlicht in:	IEEE transactions on magnetics 2009-10, Vol.45 (10), p.4877-4879
Hauptverfasser:	Khurshid, H., Balakrishnan, S., Colak, L., Bonder, M.J., Hadjipanayis, G.C.
Format:	Artikel
Sprache:	eng
Schlagworte:	Biomedical applications of magnetic nanoparticles and MRI Bonding Chemicals Coated particles core-shell structured nanoparticles Disperse Ethanol Iron iron nanoparticles Magnetic resonance imaging Magnetic separation Magnetism Nanoparticles Oleic acid Reflection Synthesis Temperature X-ray scattering Zeta potential
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Beschreibung
Zusammenfassung:	In this paper, we report the synthesis and characterization of water dispersible core-shell structured Fe/Fe-oxide with average size 13 plusmn1.4 nm and Fe-oxide nanoparticles. Unlike the previously reported different approaches, both types of particles can be synthesized by following the same route with a small variation in the Fe(CO) 5 molar concentration and oxygen free environments. The oleate/oleylamine coated nanoparticles were surface modified with tetra-methyl-ammonium-hydroxide (TMAOH) to make them water dispersible. TGA analysis provided direct evidence that TMAOH adds to the surface of the oleic acid and oleylamine coated particles making them well disperse and stable in water as is suggested from the zeta potential measurements also.
ISSN:	0018-9464 1941-0069
DOI:	10.1109/TMAG.2009.2026629