ELECTROCHEMICAL-BEHAVIOR OF ACID-ACTIVATED MONTMORILLONITE MODIFIED ELECTRODES

Authors
FALARAS P LEZOU F
Citation
P. Falaras et F. Lezou, ELECTROCHEMICAL-BEHAVIOR OF ACID-ACTIVATED MONTMORILLONITE MODIFIED ELECTRODES, Journal of electroanalytical chemistry [1992], 455(1-2), 1998, pp. 169-179
Citations number
50
Categorie Soggetti
Electrochemistry,"Chemistry Analytical
Journal title
Journal of electroanalytical chemistry [1992]
ISSN journal
15726657 → ACNP
Volume
455
Issue
1-2
Year of publication
1998
Pages
169 - 179
Database
ISI
SICI code
Abstract
The effect of the acid activation on the efficiency of clay modified e lectrodes has been investigated. The number of surface-bound [Fe(bpy)( 3)](2+), SO42- ion pairs was significantly increased in the acid activ ated montmorillonite film. Enhanced electroactivity towards [Fe(CN)(6) ](3-) anions but no special changes for the electrochemical behavior o f H(2)Q neutral molecules were observed. This behavior is attributed t o differences in clay morphology, layer charge, and surface area. The role of the clay acidity is also discussed. (C) 1998 Elsevier Science S.A. All rights reserved.