New pathway for the synthesis of gold and silver bimetallic nanocomplexes and their derivatives of polypyrrole nanorods (TM04096)

Yu Chuan Liu, Shung J. Yang

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

We report here the first electrochemical pathway to prepare Au- and Ag-containing bimetallic nanocomplexes with a mean diameter of 5 nm in 0.1 M HCl aqueous solutions without addition of any stabilizer. First, a silver substrate was roughened by a triangular-wave oxidation-reduction cycle (ORC) in an aqueous solution containing 0.1 M HCl. Silver-containing complexes were left in the solution after the ORC treatment. Then a gold substrate was subsequently roughened by the similar ORC treatment in this solution. Encouragingly, polypyrrole (PPy)-coated Au and Ag bimetallic nanocomposites with a nanorod structure and a diameter smaller than 15 nm can be prepared by the formation of self-assembled monolayers and orderly autopolymerization of pyrrole monomers on these bimetallic nanocomplexes, and further link them together.

Original languageEnglish
Pages (from-to)3674-3678
Number of pages5
JournalElectrochimica Acta
Volume50
Issue number18
DOIs
Publication statusPublished - Jun 10 2005
Externally publishedYes

Keywords

  • Bimetallic nanocomplexes
  • Electrochemical methods
  • Nanocomplexes
  • Oxidation-reduction cycle
  • Polypyrrole

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Analytical Chemistry
  • Electrochemistry

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