Catalytic electroxidation pathway for the polymerization of polypyrrole in the presence of ultrafine silver nanoparticles

Hsun Tsing Lee, Yu Chuan Liu

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

In this work, we report the first electrochemical polymerization of polypyrrole (PPy) on Au substrates in aqueous solutions containing additives of prepared Ag nanoparticles with a diameter less than 2 nm. Due to the effect of Ag nanoparticles, which can provide a catalytic electroxidation pathway for the polymerization of PPy, the synthesized PPy film demonstrates some novel characteristics. It shows a finer and granular raspberry morphology with nano-scaled particles, and a rougher surface. The conductivity of PPy is significantly increased (∼8 times), which also reflects on the extremely high oxidation level of 0.35 revealed from the analysis of X-ray photoelectron spectroscopy (XPS). The mechanism of the nucleation and growth was investigated to explain the specific characteristics of PPy films.

Original languageEnglish
Pages (from-to)10727-10732
Number of pages6
JournalPolymer
Volume46
Issue number24
DOIs
Publication statusPublished - Nov 21 2005
Externally publishedYes

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Keywords

  • Ag nanoparticles
  • Mechanism of the nucleation and growth
  • Polypyrrole

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics

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