Dépôt Institutionnel de l'Université Ferhat ABBAS - Sétif 1 >
Faculté de Technologie >
Département d'Electrotechnique >
Articles >

Veuillez utiliser cette adresse pour citer ce document : http://dspace.univ-setif.dz:8888/jspui/handle/123456789/2511

Titre: Fabrication of new polypyrrole/silicon nitride hybrid materials for potential applications in electrochemical sensors: Synthesis and characterization
Auteur(s): Nessark, Faiza
Zouaoui, Ahmed
Garcia-Cruz, Alvaro
Bonhomme, Anne
Lee, Michael
Nessark, Belkacem
Zine, Nadia
Marote, Pedro
Bausells, Joan
Baraket, Abdoullatif
Errachid, Abdelhamid
Mots-clés: Silicon nitride
Oxidative polymerization
Surface characterization
Cyclic voltammetry
Electrochemical impedance spectroscopy
Date de publication: 29-jui-2018
Collection/Numéro: Journal of Macromolecular Science, Part A Pure and Applied Chemistry;ISSN: 1060-1325 (Print) 1520-5738 (Online) Journal homepage: http://www.tandfonline.com/loi/lmsa20
Résumé: In this research, an efficient fabrication process of conducting polypyrrole (PPy)/silicon nitride (Si3N4) hybrid materials were developed in order to be employed as transducers in electrochemical sensors used in various environmental and biomedical applications. The fabrication process was assisted by oxidative polymerization of pyrrole (Py) monomer on the surface of Si/SiO2/Si3N4 substrate in presence of FeCl3 as oxidant. To improve the adhesion of PPy layer to Si3N4 surface, a pyrrole-silane (SPy) was chemically bonded through silanization process onto the Si3N4 surface before deposition of PPy layer. After Py polymerization, Si/SiO2/Si3N4-(SPy-PPy) substrate was formed. The influence of SPy concentration and temperature of silanization process on chemical composition and surface morphology of the prepared Si/ SiO2/Si3N4-(SPy-PPy) substrates was studied by FTIR and SEM. In addition, the electrical properties of the prepared substrates were characterized by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). It was found that the best silanization reaction conditions to get Si/SiO2/Si3N4-(SPy-PPy) substrate with high PPy adhesion and good electrical conductivity were obtained by using SPy at low concentration (4.3 mM) at 90 C. These promising findings open the way for fabrication of new hybrid materials which can be used as transducers in miniaturized sensing devices for various environmental and biomedical applications.
URI/URL: http://dspace.univ-setif.dz:8888/jspui/handle/123456789/2511
ISSN: ISSN: 1060-1325
1520-5738 (Online)
Collection(s) :Articles

Fichier(s) constituant ce document :

Fichier Description TailleFormat
Article 1 Faiza NESSARK.pdf1,75 MBAdobe PDFVoir/Ouvrir
View Statistics

Tous les documents dans DSpace sont protégés par copyright, avec tous droits réservés.


Valid XHTML 1.0! Ce site utilise l'application DSpace, Version 1.4.1 - Commentaires