Journal
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
Volume 522, Issue 1, Pages 11-20Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/S0022-0728(01)00742-2
Keywords
Au(111); Ag(111); silicotungstic acid; surface-confined redox couple
Categories
Ask authors/readers for more resources
Electrochemical measurements are presented for acidic solutions containing alpha-H4SiW12O40 adsorbed on Ag(111) and Au(111) electrodes. These measurements show that this molecule passivates the Ag surface towards solution redox events. This passivation is unique to Ag, as it is not observed on Au or carbon electrodes. Depassivation can be accomplished by moving the potential of the Ag electrode into the hydrogen evolution region. These results are discussed in terms of formation of a reduced Ag-SiW12O40 complex that is stable only at negative potentials. (C) 2002 Elsevier Science B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available