INTERACTION OF SULFATE-IONS WITH MONOCRYSTALLINE SILVER ELECTRODES

Authors
SOBKOWSKI J SMOLINSKI S ZELENAY P
Citation
J. Sobkowski et al., INTERACTION OF SULFATE-IONS WITH MONOCRYSTALLINE SILVER ELECTRODES, Colloids and surfaces. A, Physicochemical and engineering aspects, 134(1-2), 1998, pp. 39-45
Citations number
19
Categorie Soggetti
Chemistry Physical
Journal title
Colloids and surfaces. A, Physicochemical and engineering aspects → ACNP
ISSN journal
09277757
Volume
134
Issue
1-2
Year of publication
1998
Pages
39 - 45
Database
ISI
SICI code
0927-7757(1998)134:1-2<39:IOSWMS>2.0.ZU;2-H
Abstract
The phenomenon of sulfate ion adsorption on monocrystalline silver sur faces was investigated quantitatively. The adsorption of sulfate from 0.1M HClO4 was found reversible with respect to the potential and also to the bulk concentration of sulfate. The adsorption isotherms as wel l as the surface concentration/potential dependences were determined r adiometrically. The surface concentration sequence was found to be Ag( 111) approximate to Ag(110) > Ag(100). The thermodynamic parameters of adsorption were calculated by fitting experimental data to virial, Fr umkin and Henry adsorption models. The sequence of sulfate adsorption on three basal silver planes from 0.1 M NaClO4, was found to be quite different to that from an acidic supporting electrolyte, in agreement with the sequence of zero-charge potentials for the silver surfaces in vestigated. (C) 1998 Elsevier Science B.V.