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Title: Synthesis of monodisperse iron oxide and iron/iron oxide core/shell nanoparticles via iron-oleylamine complex
Authors: Yu, S. 
Chow, G.M. 
Keywords: Iron Oxide
Iron-Oleylamine Complex
Monodisperse Nanoparticles
Issue Date: Jul-2006
Citation: Yu, S., Chow, G.M. (2006-07). Synthesis of monodisperse iron oxide and iron/iron oxide core/shell nanoparticles via iron-oleylamine complex. Journal of Nanoscience and Nanotechnology 6 (7) : 2135-2140. ScholarBank@NUS Repository.
Abstract: Monodisperse magnetic nanoparticles are of great scientific and technical interests. This paper reports a single-step synthesis of monodisperse magnetite nanoparticles with particle size of 8 nm. Iron/maghaemite core/shell nanoparticles with particle size of 11 nm were obtained by reducing the concentration of oleylamine. TEM and in-situ FTIR results suggested that iron-oleylamine intermediate was generated in-situ and decomposed at higher temperature. Oleylamine was also found on the surface of nanoparticles, indicating its role as capping agent which provided steric protection of as-synthesized nanoparticles from agglomeration. Both magnetite and iron/maghaemite core/shell nanoparticles were superparamagnetic at room temperature with a blocking temperature at 80 K and 67 K, respectively. Copyright © 2006 American Scientific Publishers All rights reserved.
Source Title: Journal of Nanoscience and Nanotechnology
ISSN: 15334880
DOI: 10.1166/jnn.2006.338
Appears in Collections:Staff Publications

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