Sonolytical preparation of various types of metal nanoparticles in aqueous solution

Taku Fujimoto, Yoshiteru Mizukoshi, Yoshio Nagata, Yasuaki Maeda, Ryuichiro Oshima

Research output: Contribution to journalArticlepeer-review

50 Citations (Scopus)

Abstract

Composite nanoparticles of Au, Pd and Pt, and nanoparticles of transition metal oxides, MnO2, were prepared by the sonochemical reduction of corresponding ions (Au(III), Pd(II), Pt(II), Pt(IV) and Mn(VII)) in an aqueous system in the presence of surfactants. The prepared noble metal particles were stable and the sizes were of the order of nanometer with narrow distribution. Surfactants were found to be stabilizers for the noble metal nanoparticles as well as important sources of reducing species for the metal ions. In binary metallic particles, which were prepared from aqueous mixed solutions of noble metal ions, three possible constitutional forms were obtained. MnO2 particles were reduce to water soluble Mn(II) ions by further sonication.

Original languageEnglish
Pages (from-to)2183-2186
Number of pages4
JournalScripta Materialia
Volume44
Issue number8-9
DOIs
Publication statusPublished - 2001 May 18

Keywords

  • Gold nanoparticles
  • Gold-platinum alloy nanoparticles
  • Manganese dioxide nanoparticles
  • Platinum nanoparticles
  • Sonication

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys

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