Synthesis and morphology control of gold/iron oxide magnetic nanocomposites via a simple aqueous method

L. Li, K. Y. Mak, Chi Wah Leung, C. H. Leung, A. Ruotolo, K. Y. Chan, W. K. Chan, P. W.T. Pong

Research output: Journal article publicationJournal articleAcademic researchpeer-review

Abstract

Gold/iron oxide nanocomposites offer the promise of combining the unique traits of both gold and iron oxide nanomaterials to enable new applications. In this work, a simple and safe method has been established whereby the morphology of gold material in gold/iron oxide nanocomposites can be controlled to be nanowire or nanosphere by adjusting the initial molar ratio of citrate-coated iron oxide nanoparticles to auric acid. Gold/iron oxide nanowires and nanospheres were synthesized through thismethod. Their structural, optical, and magnetic properties were characterized by transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDS), dynamic light scattering (DLS), ultraviolet-visible spectroscopy (UV-Vis), and vibrating sample magnetometry (VSM). These materials substantially maintained the optical properties of gold nanomaterials and magnetic features of iron oxide magnetic nanoparticles.
Original languageEnglish
Article number2274457
JournalIEEE Transactions on Magnetics
Volume50
Issue number1
DOIs
Publication statusPublished - 1 Jan 2014

Keywords

  • Gold
  • Iron oxide
  • Morphology control
  • Nanosphere
  • Nanowire

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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