Voltammetry of aqueous chloroauric acid with hanging mercury drop electrode

Andrey V. Korshunov, Bogdan Yosypchuk, Michael Heyrovský

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8 Citations (Scopus)

Abstract

In d.c. voltammetry of dilute aqueous chloroauric acid with hanging mercury drop electrode, when potential scanning proceeds from negative to positive values, a prominent maximum of cathodic current appears on the curve near 0 V. The effect is explained as due to catalytic evolution of hydrogen on the electrode initially covered by adsorbed Au-hydroxidic layer. Once the layer dissolves in the acidic solution during the positive scan, a fast evolution of hydrogen takes place, catalysed by short-lived adsorbed gold particles.

Original languageEnglish
Pages (from-to)929-936
Number of pages8
JournalCollection of Czechoslovak Chemical Communications
Volume76
Issue number7
DOIs
Publication statusPublished - 2011

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Keywords

  • Aqueous chloroauric acid
  • Catalytic hydrogen evolution
  • Gold
  • Hanging mercury drop electrode
  • Hydrogen
  • Linear voltammetry
  • Voltammetry

ASJC Scopus subject areas

  • Chemistry(all)

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