Paper Title:
Preparation and Characterization of Fe3O4@Au Nanoparticles Used as Precursor of Ferrofluids
  Abstract

The Fe3O4 magnetic nanoparticles were prepared through co-precipitation of Fe3+ and Fe2+ with ammonium hydroxide. The initially obtained Fe3O4 nanoparticles were then coated by gold in solution of chloroauric acid through connecting of 3-aminopropyropyl thriethoxysilane (3-APTES) and the obtained Fe3O4@Au nanoparticles were further characterized by X-ray photoelectron spectrum (XPS). During the process, the influences of chloroauric acid, reducing agent, coupling agent and nanoparticles of Fe3O4 were studied. The results showed that core-shell structure Fe3O4@Au particles have diameters of about 20nm in size synthesized from sodium citrate as reducing agent with 10.08 emu/g of saturation magnetization.

  Info
Periodical
Edited by
Yiwang Bao, Li Tian and Jianghong Gong
Pages
415-417
DOI
10.4028/www.scientific.net/AMR.177.415
Citation
D. C. Li, Z. L. Zhang, S. L. Zhang, "Preparation and Characterization of Fe3O4@Au Nanoparticles Used as Precursor of Ferrofluids", Advanced Materials Research, Vol. 177, pp. 415-417, 2011
Online since
December 2010
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