An investigation on the adsorption characteristics and orientations model of pyrrole on smooth platinum electrode

I. Becerik, F. Kadirgan*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

Since the electropolymerization mechanism is believed to involve the initial adsorption of the monomer on to the electrode surface, in this paper, different criteria for the electroadsorption of pyrrole on a smooth polycrytalline platinum electrode were investigated in different pH media. Experiments were performed in a neutral medium (0.1 M Na2HPO4+ 0.1 M KH2PO4) and an H2SO4 aqueous medium as functions of pyrrole concentration, adsorption time and adsorption potential. The adsorption kinetics and isotherms were studied at constant potential. The number of electrons per occupied site (ne) and surface coverage ratios (θ) were calculated. Possible orientation models were proposed for adsorbed species.

Original languageEnglish
Pages (from-to)283-289
Number of pages7
JournalElectrochimica Acta
Volume42
Issue number2
DOIs
Publication statusPublished - 1997

Keywords

  • Cyclic voltammetry
  • Electroadsorption
  • Pyrrole

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