RRDE experiments with potential scans at the ring and disk electrodes
The paper authored by
S. Vesztergom,
M. Ujvári and
G.G. Láng
is published in Electrochemistry Communications (2011, vol. 13, pp. 378–381).
Abstract:
The electrochemical reduction of the surface layer of gold oxide in sulfuric acid solutions has been investigated. Our interest in the problem arose in connection with the development and testing of an electrochemical measuring system with rotating gold disk-gold ring electrodes. With the help of the new system independent and dynamic potential programs can be applied simultaneously to the disk and the ring electrodes. By applying the “phase-shifted double cyclic voltammetry” method it could be shown that the reduction of the surface oxide layer of the polycrystalline gold disk immersed into sulfuric acid solutions is accompanied by the formation of soluble, electroreducible gold species which can be detected on the ring electrode.
