Radiotracer study of the adsorption of phosphoric acid on platinized platinum electrodes in the presence of different ions and oxalic acid

G. Horányi, E. M. Rizmayer, G. Inzelt

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Abstract

Radiotracer study of the adsorption of phosphoric acid on platinized platinum electrodes was carried out under different experimental conditions. The potential and concentration dependence of the adsorption was studied at low concentrations (5 × 10-6 - 6 × 10-3 mol dm-3) in the presence of 1 M HClO4 supporting electrolyte. A Freundlich type isotherm was found. The effect of different additives was studied. In the presence of Cl- and HS-4 ions and oxalic acid the decrease of the adsorption of H3PO4 may be observed. On the other hand Cd2+ and Cu2+ ions induce the increase of the adsorption of H3PO4 in the potential range where their electrosorption takes place.

Original languageEnglish
Pages (from-to)183-194
Number of pages12
JournalJournal of Electroanalytical Chemistry
Volume93
Issue number3
Publication statusPublished - Nov 10 1978

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Oxalic Acid
Oxalic acid
Phosphoric acid
Platinum
Ions
Adsorption
Electrodes
Electrolytes
Isotherms
phosphoric acid

ASJC Scopus subject areas

  • Electrochemistry
  • Analytical Chemistry
  • Chemical Engineering(all)

Cite this

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abstract = "Radiotracer study of the adsorption of phosphoric acid on platinized platinum electrodes was carried out under different experimental conditions. The potential and concentration dependence of the adsorption was studied at low concentrations (5 × 10-6 - 6 × 10-3 mol dm-3) in the presence of 1 M HClO4 supporting electrolyte. A Freundlich type isotherm was found. The effect of different additives was studied. In the presence of Cl- and HS-4 ions and oxalic acid the decrease of the adsorption of H3PO4 may be observed. On the other hand Cd2+ and Cu2+ ions induce the increase of the adsorption of H3PO4 in the potential range where their electrosorption takes place.",
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AU - Rizmayer, E. M.

AU - Inzelt, G.

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AB - Radiotracer study of the adsorption of phosphoric acid on platinized platinum electrodes was carried out under different experimental conditions. The potential and concentration dependence of the adsorption was studied at low concentrations (5 × 10-6 - 6 × 10-3 mol dm-3) in the presence of 1 M HClO4 supporting electrolyte. A Freundlich type isotherm was found. The effect of different additives was studied. In the presence of Cl- and HS-4 ions and oxalic acid the decrease of the adsorption of H3PO4 may be observed. On the other hand Cd2+ and Cu2+ ions induce the increase of the adsorption of H3PO4 in the potential range where their electrosorption takes place.

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