| Issue |
J. Chim. Phys.
Volume 95, Number 6, June 1998
|
|
|---|---|---|
| Page(s) | 1475 - 1478 | |
| DOI | https://doi.org/10.1051/jcp:1998308 | |
Controlled exchange of metallic cations by a polypyrrole-based resin
1
Centre for Education and Research on Macromolecules (CERM), University of Liège, B6 Sart-Tilman, 4000 Liège, Belgium
2
Radiochemistry, University of Liège, B16 Sart-Tilman, 4000 Liège, Belgium
3
Nuclear Physics, University of Liège, B15 Sart-Tilman, 4000 Liège, Belgium
Abstract
This work shows that the binding and the release of Cs+, Ba2+, La3+ and Th4+ cations can be controlled by the application of a potential to a polypyrrole doped with polystyrene sulfonate exchange-resin. Radiometric and nuclear techniques were carried out to characterize the reversibility of the process in relation with the exchanged-cation charge.
Résumé
Ces travaux montrent que la fixation et le relargage des cations Cs+, Ba2+, La3+ et Th4+ peuvent être contrôlés par l'application d'un potentiel à une résine de polypyrrole dopée au polystyrène sulfonate. Des mesures radiométriques (comptage α) et nucléaires (rétrodiffusion de Rutherford) ont permis de caractériser la réversibilité du procédé, notamment en fonction de la charge de l'ion échangé.
Key words: ions-exchange resin / polypyrrole / metallic cation / electrochemical control
© EDP Sciences, 1998
