Preparation of copper-silicon dioxide nanoparticles with chemical vapor synthesis

Anna Lähde, Noora Kokkonen, Antti J. Karttunen, Sirpa Jääskeläinen, Unto Tapper, Tapani A. Pakkanen, Jorma Jokiniemi

Research output: Contribution to journalArticleScientificpeer-review

Abstract

Atmospheric pressure chemical vapor synthesis was used to produce copper nanoparticle composites in an amorphous silicon dioxide, i.e., either copper nanoparticles coated with amorphous silicon dioxide or copper nanoparticles embedded in amorphous silicon dioxide matrix. Synthesized metal-organic copper(I) complex was used as a precursor that provided well-defined ratio (1:2) of copper and silicon. The thermal decomposition of the Cu(I) complex molecule leads to homogenous nucleation and formation of copper nanoparticles which are subsequently coated with Si/SiO(2) in the gas phase. The decomposition was greatly enhanced when reductive atmosphere, i.e., H(2)/N(2) 10 v% were used instead of pure nitrogen. A narrow size distribution with the geometric mean diameter of the particle agglomerates around 30 nm was observed while the primary size of the copper core particles was around 5 nm.

Original languageEnglish
Pages (from-to)3591-3598
Number of pages8
JournalJournal of Nanoparticle Research
Volume13
Issue number9
DOIs
Publication statusPublished - Sep 2011
MoE publication typeA1 Journal article-refereed

Keywords

  • Gas phase synthesis
  • Gas phase coating
  • Cu-Si nanoparticle
  • Metal-organic precursor
  • Aerosols
  • AEROSOL-PARTICLES
  • GAS
  • APPROXIMATION
  • COMPOSITES
  • ENERGY

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