Preparation of Pt/polypyrrole-ferrocene hydrogen peroxide sensitive electrode for the use as a biosensor

Arslan F., Yasar A., Kilic E.

RUSSIAN JOURNAL OF ELECTROCHEMISTRY, vol.42, no.2, pp.137-140, 2006 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 42 Issue: 2
  • Publication Date: 2006
  • Doi Number: 10.1134/s1023193506020042
  • Journal Name: RUSSIAN JOURNAL OF ELECTROCHEMISTRY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.137-140
  • Keywords: polypyrrole, hydrogen peroxide, ferrocene, HORSERADISH-PEROXIDASE, POLYPYRROLE FILM, IMMOBILIZATION, XANTHINE
  • Ankara University Affiliated: No

Abstract

A polypyrrole electrode with ferrocene mediator is prepared and its sensitivity to hydrogen peroxide is investigated. The polypyrrole is deposited upon a 0.5 cm(2) Pt plate by the polymerization of pyrrole by scanning the electrode potential between 0.0 and 0.9 V at a scan rate of 50 mV/s. The platinum/polypyrrole-ferrocene (Pt/PPy-Fc) electrode is prepared by adding ferrocene to the coverage medium. The electrode's sensitivity to hydrogen peroxide is investigated at room temperature using 0.025 M phosphate buffer at pH 7. The working potential is 0.7 V, the concentrations of pyrrole and ferrocene are 0.2 M and 10 mM. Polypyrrole was coated on the electrode surface within 26 cycles.