Mechanism of the oscillatory reduction of peroxodisulfate on gold(110) at electrode potentials positive to the point of zero charge

Authors
Treindl, L Doblhofer, K Krischer, K Samec, Z
Citation
L. Treindl et al., Mechanism of the oscillatory reduction of peroxodisulfate on gold(110) at electrode potentials positive to the point of zero charge, ELECTR ACT, 44(23), 1999, pp. 3963-3967
Citations number
16
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
ELECTROCHIMICA ACTA
ISSN journal
00134686 → ACNP
Volume
44
Issue
23
Year of publication
1999
Pages
3963 - 3967
Database
ISI
SICI code
0013-4686(1999)44:23<3963:MOTORO>2.0.ZU;2-P
Abstract
The oscillatory reduction of S2O82- ions on the Au(110) electrode in dilute solutions of NaF at potentials positive to the known value of the potentia l of zero charge (PZC) has been studied. Experimental results based on cycl ic voltammetry with rotating disk electrodes and potentiostatic current tra nsients indicate that in the course of S2O82- reduction the surface state o f the electrode is modified. It is proposed that the point of zero charge s hifts to a more positive potential, and that the oscillatory S2O82- reducti on is governed by the Frumkin effect. (C) 1999 Elsevier Science Ltd. All ri ghts reserved.