Articles
  • Radiation-induced synthesis of Au/Fe oxide nanocomposite particles for magnetic separation of biomolecules 
  • Satoshi Seino*, Takuya Kinoshitaa, Yohei Otomea, Takashi Nakagawaa, Kenji Okitsub, Tadachika Nakayama, Tohru Sekino, Koichi Niihara and Takao A. Yamamotoa
  • ISIR, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka, Japan a Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka, Japan b Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuencho, Sakai, Osaka, Japan
Abstract
Nanocomposite particles composed of gold and iron oxide were synthesized with various ratios of gold and iron oxide in an aqueous phase using γ-rays. Iron oxide nanoparticles of γ-Fe2O3 or Fe3O4 were used as a magnetic phase on which gold nanoparticles with average diameters of 5-10 nm were supported. The efficiency of magnetic separation of biomolecules by the present nanocomposite particles was investigated using glutathione as a model compound. The amount of glutathione magnetically separated was significantly enhanced by the supported gold nanoparticles.

Keywords: γ-Fe2O3, Fe3O4, Au, nanocomposite particle, γ-ray, magnetic separation

This Article

  • 2004; 5(2): 136-139

    Published on Jun 30, 2004

Correspondence to

  • E-mail: