Thermolysis of nickel acetylacetonate in organic surfactant and formation of metallic nickel, nickel carbide and nickel oxide nanocrystals

Y. Goto, K. Taniguchi, T. Omata, S. Otsuka-Yao-Matsuo, N. Ohashi, S. Ueda, H. Yoshikawa, Y. Yamashita, H. Oohashi, K. Kobayashi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Nickel acetylacetonate was thermally decomposed in organic solvent containing surfactant molecules under inert atmosphere. The phases obtained were identified using XRD and hard-X-ray photoelectron spectroscopy. For the case using the oleylamine as a solvent and a surfactant, a face-centered metallic nickel with ∼50 nm grain size appeared at low reaction temperature below 240°C. At high reaction temperature above 280 °C, nanocrystals of cubic and hexagonal nickel carbide (Ni3C) with ∼50 nm grain size appeared; the hexagonal nickel carbide had been often identified as a hexagonal close-packed metallic nickel. For the case using the 1-octadecene as a solvent and fatty acid as a surfactant, nanocrystals of nickel oxide with 3-4 nm grain size appeared. The key factors determining the phase appeared were discussed.

Original languageEnglish
Title of host publicationThe Minerals, Metals and Materials Society - 3rd International Conference on Processing Materials for Properties 2008, PMP III
Pages802-807
Number of pages6
Publication statusPublished - 2009
Externally publishedYes
Event3rd International Conference on Processing Materials for Properties 2008, PMP III - Bangkok, Thailand
Duration: 2008 Dec 72008 Dec 10

Publication series

NameThe Minerals, Metals and Materials Society - 3rd International Conference on Processing Materials for Properties 2008, PMP III
Volume2

Other

Other3rd International Conference on Processing Materials for Properties 2008, PMP III
CountryThailand
CityBangkok
Period08/12/708/12/10

Keywords

  • Colloidal synthesis
  • Nanocrystals
  • Nickel
  • Nickel carbide
  • Nickel oxide

ASJC Scopus subject areas

  • Materials Science(all)

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