Voltammetric studies of gold, protons, and [HCl2](-) in ionic liquids

Leigh Aldous, D.S. Silvester, W.R. Pitner, R.G. Compton, M.C. Lagunas, Christopher Hardacre

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60 Citations (Scopus)


The comparative study of the voltammetry of H[NTf2], HCl and H[AuCl4] in [C(4)mim][NTf2] has provided an insight into the influence of protons on the reduction of [AuCl4](-) at Au, Pt or glassy carbon (GC) electrodes, and has allowed the identification of an unprecedented proton-induced electroless deposition of Au on relatively inert GC surfaces. For the first time, clear evidence of the quantitative formation of [HCl2](-) has been obtained in HCl/[C(4)mim][NTf2] mixtures, and the electrochemical behavior of these mixtures analyzed. In particular, a significant shift of the dissociation equilibrium toward the formation of chloride and the solvated proton (H-IL(+)), following electrochemical reduction of H-IL(+) has been observed in the time-scale of the experiments.
Original languageEnglish
Pages (from-to)8496-8503
Number of pages8
JournalJournal of Physical Chemistry C
Volume111 (24)
Issue number24
Publication statusPublished - 21 May 2007

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Energy(all)
  • Electronic, Optical and Magnetic Materials
  • Surfaces, Coatings and Films


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