Specific anion adsorption in the course of upd of Zn2+ ions on platinum

G. Horányi, Akiko Aramata

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

The specific anion adsorption accompanying the upd of Zn2+ ions on platinum electrodes has been studied by the radiotracer technique using 35S labelled sulphate species and 36Cl labelled Cl- ions. It has been found that sulphate ions adsorb readily on the top of Zn adatoms while the adsorption strength of Cl- ions on the Zn adlayer is significantly lower than that of HSO-4(SO2-4) ions. Indirect radiotracer evidence obtained from competitive adsorption studies is presented concerning the relatively high adsorbability of H2PO-4 ions. It follows from the experimental results obtained that the calculation of the mass and charge balance (involving the determination of the so-called electrosorption valence) requires the knowledge of the extent of the anion adsorption on the adatom layer.

Original languageEnglish
Pages (from-to)201-207
Number of pages7
JournalJournal of Electroanalytical Chemistry
Volume434
Issue number1-2
Publication statusPublished - Aug 15 1997

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Platinum
Anions
Negative ions
Ions
Adsorption
Adatoms
Sulfates
Electrodes

Keywords

  • Induced anion adsorption
  • Pt electrode
  • Radiotracer technique
  • Upd
  • Zn ions

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Analytical Chemistry
  • Electrochemistry

Cite this

Specific anion adsorption in the course of upd of Zn2+ ions on platinum. / Horányi, G.; Aramata, Akiko.

In: Journal of Electroanalytical Chemistry, Vol. 434, No. 1-2, 15.08.1997, p. 201-207.

Research output: Contribution to journalArticle

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