Radiotracer study of the adsorption of Cl- ions in the course of monolayer oxide film formation at platinized platinum electrodes

G. Horányi, E. M. Rizmayer

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Abstract

Adsorption of Cl- ions at a platinized platinum electrode was studied in a wide potential range using 36Cl labelled Cl- ions dissolved in 1 mol dm-3 HClO4 supporting electrolyte. Reversibility with respect to potential changes was examined in the potential range where formation of OH and O surface species is expected. Results obtained by direct radiotracer study of the adsorption were compared with those attained by electrochemical methods reported in the literature [6, 7]. It has been shown that almost reversible adsorption behaviour of Cl- ions may be found in the potential range 600-1000 mV (rhe scale). Between 900-1100, 900-1200 and 900-1300 mV irreversibility becomes more and more pronounced. These results are in accordance with the statement reported in the literature[6, 7] that Cl- adsorption blocks PtOH monolayer formation.

Original languageEnglish
Pages (from-to)923-926
Number of pages4
JournalElectrochimica Acta
Volume30
Issue number7
DOIs
Publication statusPublished - 1985

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Platinum
Oxide films
Monolayers
Ions
Adsorption
Electrodes
Electrolytes

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Analytical Chemistry
  • Electrochemistry

Cite this

Radiotracer study of the adsorption of Cl- ions in the course of monolayer oxide film formation at platinized platinum electrodes. / Horányi, G.; Rizmayer, E. M.

In: Electrochimica Acta, Vol. 30, No. 7, 1985, p. 923-926.

Research output: Contribution to journalArticle

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