A Brief Study on electrochemical properties of polypyrrole/nano-SiO₂

Journal of Nanoanalysis

مقاله 3، دوره 1، شماره 1، تیر 2014، صفحه 17-20   

شناسه دیجیتال (DOI): 10.22034/jna.2014.01.003

نویسندگان

Omid Zabihi^{* 1}؛ Mohammad Sajjad Khalili²؛ Monireh Hajmalek¹

¹Department of Chemistry, Islamic Azad University, Science and Reaserch Branch, Tehran, Iran

²Department of Chemistry, Faculty of Sceince and Engineering, Islamic Azad University, Saveh Branch, Saveh, Iran

چکیده

An attempt has been made to investigate the effect of SiO₂ nanoparticles on the conductivity of polypyrrole conducting polymeric films prepared by an electrochemical method. The obtained nanocomposites were characterized by FTIR, cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and scanning electron microscopy (SEM). The results indicate that the conductivity of the nanocomposite was significantly increased in comparison to pure polypyrrole. Fitting the impedance results to an equivalent circuit reveals that addition of SiO2 nanoparticles reduces the ohmic resistance due to the better conductivity.

کلیدواژه‌ها

Electrochemical properties؛ Polypyrrole nanocomposite؛ SiO2 nanoparticles