Radiotracer study of the adsorption of Cl- and HSO4- ions on a porous gold electrode and on underpotential deposited metals on gold

G. Horányi, E. M. Rizmayer, P. Joó

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Abstract

Adsorption of Cl- and HSO4- ions was investigated on porous gold electrodes by a radiotracer method in the presence of 1 mol dm-3 HClO4 supporting electrolyte. In the potential range 0-1300 mV (on the RHE scale) a continuous increase of Cl- adsorption may be observed. However, in the case of HSO4- ions a measurable may be found only above 300 mV. In both cases a decrease of the adsorption occurs at potentials where the formation of the oxide layer starts (above 1200 mV). Underpotential deposition of Cd2+, Cu2+, Ag+ results in a significant increase of the anion adsorption.

Original languageEnglish
Pages (from-to)211-222
Number of pages12
JournalJournal of Electroanalytical Chemistry
Volume152
Issue number1-2
DOIs
Publication statusPublished - Aug 25 1983

ASJC Scopus subject areas

  • Analytical Chemistry
  • Chemical Engineering(all)
  • Electrochemistry

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