Size-controlled synthesis of nickel nanoparticles

Y. Hou, H. Kondoh, T. Ohta, S. Gao

Research output: Contribution to journalArticle

152 Citations (Scopus)

Abstract

A facile reduction approach with nickel acetylacetonate, Ni(acac) 2 , and sodium borohydride or superhydride leads to monodisperse nickel nanoparticles in the presence of hexadecylamine (HDA) and trioctylphosphine oxide (TOPO). The combination of HDA and TOPO used in the conventional synthesis of semiconductor nanocrystals also provides better control over particle growth in the metal nanoparticle synthesis. The size of Ni nanoparticles can be readily tuned from 3 to 11 nm, depending on the ratio of HDA to TOPO in the reaction system. As-synthesized Ni nanoparticles have a cubic structure as characterized by power X-ray diffraction (XRD), selected-area electron diffraction (SAED). Transmission electron microscopy (TEM) images show that Ni nanoparticles have narrow size distribution. SQUID magnetometry was also used in the characterization of Ni nanoparticles. The synthetic procedure can be extended to the preparation of high quality metal or alloy nanoparticles.

Original languageEnglish
Pages (from-to)218-222
Number of pages5
JournalApplied Surface Science
Volume241
Issue number1-2 SPEC. ISS.
DOIs
Publication statusPublished - 2005 Feb 28

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Keywords

  • Magnetism
  • Nanoparticles
  • Nickel
  • Synthesis

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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