One-pot hydrothermal synthesis of an assembly of magnetite nanoneedles on a scaffold of cyclic-diphenylalanine nanorods

Takanari Togashi, Mitsuo Umetsu, Takashi Naka, Satoshi Ohara, Yoshiharu Hatakeyama, Tadafumi Adschiri

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

The assembly of metal oxide nanoparticles (NPs) on a biomolecular template by a one-pot hydrothermal synthesis method is achieved for the first time. Magnetite (Fe3O4) nanoneedles (length: ~100 nm; width:~10 nm) were assembled on cyclicdiphenylalanine (cFF) nanorods (length: 2-10 μm; width: 200 nm). The Fe3O4 nanoneedles and cFF nanorods were simultaneously synthesized from FeSO4 and L-phenylalanine by hydrothermal synthesis (220 °C and 22 MPa), respectively. The samples were analyzed by powder X-ray diffraction (XRD), Fourier transform infrared spectroscopy (IR), transmission electron microscopy (TEM), and superconducting quantum interference device (SQUID) magnetometry. Experimental results indicate that Fe3O4 nanoneedles were assembled on cFF nanorods during the hydrothermal reaction. The composite contained 3.3 wt% Fe 3O4 nanoneedles without any loss of the original magnetic properties of Fe3O4.

Original languageEnglish
Pages (from-to)3991-3999
Number of pages9
JournalJournal of Nanoparticle Research
Volume13
Issue number9
DOIs
Publication statusPublished - 2011 Sep

Keywords

  • Hydrothermal
  • Magnetite
  • One-pot synthesis
  • Peptide
  • Self-assembly

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Atomic and Molecular Physics, and Optics
  • Modelling and Simulation
  • Materials Science(all)
  • Condensed Matter Physics

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