Radiotracer study of the adsorption of H2S at a platinized platinum electrode

G. Horányi, E. M. Rizmayer

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Adsorption of 35S labelled H2S was studied at a platinized platinum electrode in 1 mol dm-3 HClO4 supporting electrolyte. The potential dependence of the adsorption was studied over a wide potential range (-100 to +1400 mV on the RHE scale). Relatively low coverage with respect to adsorbed species was found at low potentials (E≤ O mV) while the formation of about two monolayers of chemisorbed species was observed at E = 500 mV. Above 800 mV a decrease in adsorption was observed. The mobility of chemisorbed species formed at different potentials and the behaviour of the chemisorbed layer formed at E = 500 mV were studied. It is stated that the results of the radiotracer adsorption study are at variance with some conclusions drawn from pure electrochemical measurements reported in the literature.

Original languageEnglish
Pages (from-to)297-305
Number of pages9
JournalJournal of Electroanalytical Chemistry
Issue number1-2
Publication statusPublished - Jul 10 1986

ASJC Scopus subject areas

  • Analytical Chemistry
  • Chemical Engineering(all)
  • Electrochemistry

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