Studying thiol adsorption on Au, Ag and Hg surfaces by potentiometric measurements.

Citation:

Cohen-Atiya M, Mandler D. Studying thiol adsorption on Au, Ag and Hg surfaces by potentiometric measurements. J. Electroanal. Chem.Journal of Electroanalytical Chemistry. 2003;550-551 :267 - 276.

Date Published:

2003///

Abstract:

The adsorption of thiols on different metal surfaces has been studied using potentiometric measurements. The adsorption is a complex process that comprises a few steps. The first involves neg. charge transfer to the electrode surface as evidenced by a sharp neg. shift of the open circuit potential (ocp). The charge that is accumulated on the electrode surface is discharged through a redn. process that involves either water or oxygen redn. The rate of the discharging process depends strongly on the overpotential of the electrode material for water redn., the medium, and to some extent, on addnl. functional groups that the thiol bears. A detailed general mechanism that is in agreement with our findings is proposed and discussed. [on SciFinder(R)]

Notes:

CAPLUS AN 2003:612652(Journal)