Ferrocene redox in trihexyl(tetradecyl)phosphonium bis-2,4,4-(trimethylpentyl) phosphinate (Cyphos IL-104)/ethanol at glassy carbon and platinum working electrodes

Dmytro Kozak, Mrutyunjay Panigrahi, Mariusz Grzegorz Grabda, Etsuro Shibata, Takashi Nakamura

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The redox of ferrocen couple (Fc+/Fc) in the 1 M Cyphos IL-104/ethanol electrolyte system was studied via cyclic voltammetry under both inert and air atmospheres at room temperature. The anodic and cathodic peak potentials for Fc+/Fc were obtained at scan rates of 0.02, 0.1, and 0.2 V/s. The half-potential of Fc+/Fc versus a silver quasi-reference electrode (QAg) changed from 0.80969 to 0.84945 V and from 0.79872 to 0.8627 V at the glassy-carbon (GC)- and platinum (Pt)- working electrodes (WE), respectively, demonstrating that it depended on the presence of water from 0.1 to 0.3 wt.% in the 1 M Cyphos IL-104/ethanol electrolyte system. The half-potential of Fc+/Fc versus quasi-platinum (QPt) was not changed for both working electrodes and for the same solutions; the differences between the half-potentials of Fc+/Fc versus QPt were 0.0022 and 0.00416 V at the GC- and Pt-WEs, respectively.

Original languageEnglish
Pages (from-to)41-47
Number of pages7
JournalElectrochimica Acta
Volume163
DOIs
Publication statusPublished - 2015 May 1
Externally publishedYes

Keywords

  • Cyclic voltammetry
  • Cyphos IL-104
  • electrodes
  • ethanol
  • ferrocene
  • glassy carbon and platinum working
  • silver and platinum reference electrodes

ASJC Scopus subject areas

  • Electrochemistry
  • Chemical Engineering(all)

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