Electrocatalytic reduction of NO- 2 and NO- 3 ions at a platinized platinum electrode in alkaline medium

G. Horányi, E. M. Rizmayer

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Abstract

The electrocatalytic reduction of NO- 3 and NO- 2 ions was studied at platinized platinum electrodes in the presence of 1 mol dm-3 NaOH supporting electrolyte. Steady state polarization curves were taken by point-by-point potentiostatic measurements at different concentrations in the potential range 0-400 mV (on RHE scale). In both cases a sharp maximum appears on the polarization curves at low potentials (100-250 mV). In the case of NO- 2 ions a less pronounced second maximum may be observed at more positive potentials. The position of the maxima depends on the concentration of the reacting species. It is assumed that the polarization behaviour observed is connected with competitive adsorption phenomena.

Original languageEnglish
Pages (from-to)265-272
Number of pages8
JournalJournal of Electroanalytical Chemistry
Volume189
Issue number1
Publication statusPublished - Jul 10 1985

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Platinum
Ions
Polarization
Electrodes
Electrolytes
Adsorption

ASJC Scopus subject areas

  • Electrochemistry
  • Analytical Chemistry
  • Chemical Engineering(all)

Cite this

Electrocatalytic reduction of NO- 2 and NO- 3 ions at a platinized platinum electrode in alkaline medium. / Horányi, G.; Rizmayer, E. M.

In: Journal of Electroanalytical Chemistry, Vol. 189, No. 1, 10.07.1985, p. 265-272.

Research output: Contribution to journalArticle

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