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 language | English |
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Pages (from-to) | 929-936 |
Number of pages | 8 |
Journal | Collection of Czechoslovak Chemical Communications |
Volume | 76 |
Issue number | 7 |
DOIs | |
Publication status | Published - 2011 |
Keywords
- Aqueous chloroauric acid
- Catalytic hydrogen evolution
- Gold
- Hanging mercury drop electrode
- Hydrogen
- Linear voltammetry
- Voltammetry
ASJC Scopus subject areas
- Chemistry(all)