Accéder directement au contenu Accéder directement à la navigation
Article dans une revue

Elaboration of new modified electrodes (MEs) by electropolymerization of Cu(II)-Schiff base complexes bearing pyrrole moieties: Application in electroreduction of acetophenone and carbon dioxide

Abstract : Novel functional Schiff base ligands bearing pyrrole moieties in their structures, L1:1-(3-Pyrrole-1-yl-propylimino-methyl)-naphtalen-2-ol, L2:1-(3-Pyrrole-1-yl-propylimino-methyl)-phenol and L3: 1-(3-Pyrrole-1-yl-phenylimino-methyl)-naphtalen-2-ol as well as their Cu(II) complexes, have been synthesized and characterized by means of common spectroscopic analysis methods such as FTIR, UV-Vis, 1H NMR, 13C NMR, GC-MS and thermogravimetric analysis (TGA). The complexes, along with their metallic centres, were electropolymerized by the cyclic voltammetry method on platinum (Pt) and indium tin oxide (ITO) substrates, so that new and original modified electrodes (MEs) could be obtained, i.e. ME Poly(Li-Cu)Pt and ME Poly (Li-Cu)ITO (i=1-3). MEs obtained on ITO were characterized by FTIR spectroscopy and their morphology was investigated using scanning electron microscopy (SEM) and elemental composition by EDX analysis. The catalytic activity of these modified electrodes was successfully evaluated using electroreduction reactions in aqueous media of organic substrates. The efficiently of acetophenone reduction was significantly improved by increasing the quantity of added substrate. The value of cathodic current intensity ipc goes up from 7 to 42μA for substrate volume values varying from 0 to 40 μL, respectively. In addition, a significant increase of current values from -70μA to 175μA was observed in the presence of a saturated solution of CO2.
Type de document :
Article dans une revue
Liste complète des métadonnées

https://hal.univ-lille.fr/hal-02327082
Contributeur : Lilloa Université de Lille Connectez-vous pour contacter le contributeur
Soumis le : vendredi 8 janvier 2021 - 20:17:22
Dernière modification le : mercredi 27 octobre 2021 - 04:16:48
Archivage à long terme le : : vendredi 9 avril 2021 - 19:39:19

Fichier

ACCEPTED MANUSCRIPT_Elaboratio...
Fichiers produits par l'(les) auteur(s)

Identifiants

Collections

`

Citation

Ahcene Ait Amer, Hocine Ilikti, Christophe Beyens, Joel Lyskawa, Ulrich Maschke. Elaboration of new modified electrodes (MEs) by electropolymerization of Cu(II)-Schiff base complexes bearing pyrrole moieties: Application in electroreduction of acetophenone and carbon dioxide. European Polymer Journal, Elsevier, 2019, European Polymer Journal, 112, pp.569-580. ⟨10.1016/j.eurpolymj.2018.10.016⟩. ⟨hal-02327082⟩

Partager

Métriques

Consultations de la notice

120

Téléchargements de fichiers

75