Paper Title
Methanol Electrochemical Sensor Based on Polythiophene/Iron Oxide Nanocomposite

Abstract
A novel electrochemical sensor for detection of methanol is fabricated using a modified glassy carbon electrode (GCE). The active sensing material is composed of a conductive polythiophene (PTh) doped iron oxide (α-Fe2O3) that simply synthesized bya sol-gel route followed by an oxidative polymerization process. The as-formed PTh/α-Fe2O3nanocomposite is fully characterized by various techniques including XRD, XPS, FTIR-Raman, FE-SEM-EDS and HR-TEM measurements. Excellent sensing parameters are achievedwith asensor sensitivity of 0.793 μAmM−1cm−2, limit of detection LODat (S/N=3) = 1.59 mM, a widerange of methanol concentration from 5 to 1000 μMand a correlation coefficient R2=0.9483. Keywords - Polythiophene, α-Fe2O3, Sol-gel, Methanol, Electrochemical sensor.