Optical and Photo-electrochemical characterization of manganese dioxide/polypyrrole nanocomposite

Type : Article de conférence
Auteur(s) :  Assia Tounsi, Chrif Dehchar, Samiha LAIDOUDI, Ouafia BELGHERBI, Belkacem Nessark, Farid Habelhames
Année :  2019
Domaine : Chimie
Conférence: 5th International conference on advances in mechanical engineering (ICAME 2019)
Lieu de la conférence:  Istanbul, Turquie
Résumé en PDF :  (résumé en pdf)
Fulltext en PDF :  (.pdf)
Mots clés :  Manganese dioxide, Polypyrrole, electrodeposition, optical proprieties.

Résumé : 

PPy-coated manganese dioxide (PPy-MnO2) synthesized by depositing PPy on the surface of γ-MnO2 particles in acetonitrile solution containing 10-1M lithium perchlorate (LiClO4) containing a monomer (pyrrole) and semiconductor (MnO2) nanoparticles. The composite materials (MnO2-PPy/ITO) were characterized by different methods including cyclic voltammetry, impedance spectroscopy, chronoamperometry, scanning electron microscopy (SEM). The cyclic voltammogram showed one redox couple characteristic of the oxidation and reduction composite material of composite material. The impedance spectroscopy study showed that the resistance of the film increases with the MnO2 incorporated in the polymer. The morphological analysis of the film surfaces showed that the MnO2 nanoparticle increased the roughness. These results give information on the use possibility of these materials for energy storage and as photovoltaic cells applications.