One pot synthesis of monodisperse Fe3O4 nanocrystals by pyrolysis reaction of organometallic compound

W. S. Chiu, Shahidan Radiman, M. H. Abdullah, P. S. Khiew, N. M. Huang, Roslan Abd. Shukor

Research output: Contribution to journalArticle

48 Citations (Scopus)

Abstract

This paper reports on a simple and reproducible technique to prepare high quality colloidal Fe3O4 nanocrystals (NCs) with controlled size, shape and narrow size distribution without any size sorting process. The method is based on the pyrolysis of self-made iron oleate precursor by using oleic acid which was extracted from natural palm-oil as capping ligands. By controlling the growth time, the size of the NCs can be tuned within the range of 4-18 nm diameter with a standard deviation less than 18% of the mean diameter. TEM micrograph shows that NCs are highly monodisperse and spherical in shape. By controlling the evaporation of the solvents, the NCs self-assembled into monolayer and bi-layer into triangle "island" in an ordered hexagonal closed-packed superlattices. X-ray diffraction (XRD) pattern reveals that all the peaks of the NCs can be indexed with the standard sample. Measurements from vibrating sample magnetometer (VSM) showed that the magnetic properties correlate directly with the size of the NCs.

Original languageEnglish
Pages (from-to)231-235
Number of pages5
JournalMaterials Chemistry and Physics
Volume106
Issue number2-3
DOIs
Publication statusPublished - 25 Dec 2007

Fingerprint

Organometallic Compounds
organometallic compounds
Organometallics
Nanocrystals
pyrolysis
nanocrystals
Pyrolysis
synthesis
Oleic Acid
Palm oil
oleic acid
Oleic acid
Superlattices
Self assembled monolayers
Magnetometers
classifying
Sorting
triangles
magnetometers
Diffraction patterns

Keywords

  • FeO
  • Nanocrystals
  • Organometallic

ASJC Scopus subject areas

  • Materials Chemistry

Cite this

One pot synthesis of monodisperse Fe3O4 nanocrystals by pyrolysis reaction of organometallic compound. / Chiu, W. S.; Radiman, Shahidan; Abdullah, M. H.; Khiew, P. S.; Huang, N. M.; Abd. Shukor, Roslan.

In: Materials Chemistry and Physics, Vol. 106, No. 2-3, 25.12.2007, p. 231-235.

Research output: Contribution to journalArticle

Chiu, W. S. ; Radiman, Shahidan ; Abdullah, M. H. ; Khiew, P. S. ; Huang, N. M. ; Abd. Shukor, Roslan. / One pot synthesis of monodisperse Fe3O4 nanocrystals by pyrolysis reaction of organometallic compound. In: Materials Chemistry and Physics. 2007 ; Vol. 106, No. 2-3. pp. 231-235.
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