Electrical double layer at the alpha-Fe2O3-mixed electrolyte (ethanol-aqueous) interface

Authors
Janusz, W Sworska, A Szczypa, J
Citation
W. Janusz et al., Electrical double layer at the alpha-Fe2O3-mixed electrolyte (ethanol-aqueous) interface, COLL SURF A, 149(1-3), 1999, pp. 421-426
Citations number
20
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
ISSN journal
09277757 → ACNP
Volume
149
Issue
1-3
Year of publication
1999
Pages
421 - 426
Database
ISI
SICI code
0927-7757(19990415)149:1-3<421:EDLATA>2.0.ZU;2-U
Abstract
The adsorption of Na+ and Cl- ions from a mixed ethanol-water (1:1) solutio n of NaCl at the hematite-electrolyte interface was studied. The presence o f ethanol in alpha-Fe2O3-NaCl solution system has no significant effect on the surface charge density versus pH relationship. On the other hand an inf luence of ethanol on the zeta potential is greater and provokes the shift o f iep from pH=8 in water solution to pH=9 in the mixed system. The adsorpti on of Cl- ions from ethanol-aqueous solutions is greater and the adsorption of Na+ ions is smaller than that from water solutions. (C) 1999 Elsevier S cience B.V. All rights reserved.