Skip to main content
×
Home
    • Aa
    • Aa

Microemulsion Synthesis of Iron Core/Iron Oxide Shell Magnetic Nanoparticles and Their Physicochemical Properties

  • Katsiaryna Kekalo (a1), Katherine Koo (a1), Evan Zeitchick (a1) and Ian Baker (a1)
Abstract
ABSTRACT

Iron magnetic nanoparticles were synthesized under an inert atmosphere via the reaction between FeCl3 and NaBH4 in droplets of water in a microemulsion consisting of octane with cetyl trimethylammonium bromide and butanol as surfactants. A thin Fe3O4 layer was produced on the iron nanoparticles using slow, controlled oxidation at room temperature. A silica shell was deposited on the Fe3O4 using 3-aminopropyltrimethoxysilane following the method of Zhang et al. [Mater. Sci. Eng. C 30 (2010) 92–97]. The structure and chemistry of the resulting nanoparticles were studied using variety of methods and their magnetic properties were determined. The diameter of the iron core was typically 8-16 nm, while the thickness of the Fe3O4 shell was 2-3 nm. The presence of the silica layer was confirmed using Fourier transform infra-red spectroscopy and the number of NH2-groups on each nanoparticle was determined based on colorimetric tests using ortho-phthalaldehyde.

Copyright
Linked references
Hide All

This list contains references from the content that can be linked to their source. For a full set of references and notes please see the PDF or HTML where available.

[1]G. Zhang , Y. Liao and I. Baker , Materials Science and Engineering C 30(1) (2010) 9297.

[2]Q. Zeng , I. Baker , J.A. Loudis , Y. Liao , P.J. Hoopes and J.B. Weaver , Appl. Phys. Lett. 90(23) (2007) 233112-1 –; 233112–3.

[3]R. Hergt . / J Phys Condens Matter 18(38) (2006), pp. S2919S2934

[5]M. P. Pileni , B. W. Ninham , T. Gulik-Krzywicki , J. Tanori , I. Lisiecki and A. Filankembo , Adv. Mater., 11 (1999) 13581362.

[6]M. Maillard , S. Giorgio and M. P. Pileni , Adv. Mater., 14 (2002) 10841086.

[7]R. K. Sharma , P. Sharma and A. Maitra , J. Colloid Interface Sci., 265 (2003) 134140.

[9]C.J. O’Connor , V. Kolesnichenko , E. Carpenter , C. Sangregorio , W.L. Zhou , A. Kumbhar , J. Sims and F. Agnoli , Synthetic Metals, 122 (2001) 547557.

[10]T.A. Pham , N.A. Kumar and Y.T. Jeong , Colloids and Surfaces A: Physicochem. Eng. Aspects 370 (2010) 95101.

[11]C. T. Seip and C. J. O’Connor , NanoStructured Materials, 12 (1999) 183-1 86.

[12]C. Hoinard ., Spectrofluorometric method for the quantitation of amino groups on solid supports. Journal of Chromatography A, 1986. 355: p. 350353.

[13]V. Janolino and H. Swaisgood , A spectrophotometric assay for solid phase primary amino groups. Applied Biochemistry and Biotechnology, 1992. 36(2): p. 8185.

Recommend this journal

Email your librarian or administrator to recommend adding this journal to your organisation's collection.

MRS Online Proceedings Library (OPL)
  • ISSN: -
  • EISSN: 1946-4274
  • URL: /core/journals/mrs-online-proceedings-library-archive
Please enter your name
Please enter a valid email address
Who would you like to send this to? *
×

Keywords: