| Titre : |
Electrochemical, spectroscopic and microscopic investigation of PEDOT coated nickel plate from aqueous micellar solutions and its anti-corrosion performances |
| Type de document : |
texte imprimé |
| Auteurs : |
Z. Aouzal, Auteur ; M. Bouabdallaoui, Auteur ; A. El Guerraf, Auteur ; S. Ben Jadi, Auteur ; M. Bazzaoui, Auteur ; R. Wang, Auteur ; E. A. Bazzaoui, Auteur |
| Année de publication : |
2023 |
| Article en page(s) : |
p. 1053-1068 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Analyse spectrale
Anticorrosifs
Anticorrosion
Caractérisation
Electrochimie
Electrode de nickel
Electropolymérisation
Essais de résilience
Microscopie
Poly(3,4-éthylènedioxythiophène)
Revêtements organiques
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Poly(3,4-ethylenedioxythiophene) (PEDOT) was electrosynthesized on nickel electrodes from aqueous micellar solutions of sodium dodecylbenzenesulfonate (SDBS) containing sodium saccharin or sodium perchlorate as supporting electrolytes. The choice of the aqueous medium for the preparation of PEDOT is mainly dictated by its relevant interest on the economic and ecological fronts. The electrodeposition of the organic coating was achieved using cyclic voltammetry, chronoamperometry and chronopotentiometry. This latter electrochemical method proved to be the most suited to the preparation of homogeneous and adherent PEDOT films. Elsewhere, the presence of SDBS micelles in the electrolytic medium led to an improvement of the monomer solubility and a notable decrease in its oxidation potential. Furthermore, spectroscopic and microscopic characterization techniques revealed regular and compact nodule-like structure of the coating and proved the increase in its doping rate when increasing the electrosynthesis current density. On the other hand, in order to discuss the potential application of the prepared conducting polymer as protective layer against corrosion, several electrochemical tests were performed, using open circuit potential (OCP) and electrochemical impedance spectroscopy (EIS) methods. OCP curves have shown a slight increase in the potential toward more positive values, while the EIS measurements have given a 90° capacitive line indicating the pure capacitive behavior of the polymeric system and have proven the presence of a fast charge transfer at the metal/polymer and polymer/solution interfaces. |
| Note de contenu : |
- EXPERIMENTAL : Chemicals - Electrochemical apparatus - Characterization techniques
- RESULTS AND DISCUSSION : Preparation of the polymeric coating - Characterization of PEDOT films - Corrosion tests |
| DOI : |
https://doi.org/10.1007/s11998-022-00724-9 |
| En ligne : |
https://link.springer.com/content/pdf/10.1007/s11998-022-00724-9.pdf?pdf=button% [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39447 |
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 20, N° 3 (05/2023) . - p. 1053-1068
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Electrochemical, spectroscopic and microscopic investigation of PEDOT coated nickel plate from aqueous micellar solutions and its anti-corrosion performances in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 3 (05/2023)
