Polypyrrole-Pt Nanocomposites As Electrochemical Glucose Sensor

Department of Chemistry, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad 431004, India

Adv. Mater. Lett., 2016, 7 (12), pp 1035-1039

DOI: 10.5185/amlett.2016.6561

Publication Date (Web): Oct 12, 2016

Copyright © IAAM-VBRI Press

E-mail:anjali.rajbhoj@gmail.com

Abstract

A voltammetric sensor was developed for detection of glucose by using cyclic voltammetry (CV). The sensing platform was Polypyrrole-Pt nanocomposites on Platinum electrode (PPy-Pt-PtE). PPy-Pt was synthesized by chemical method, using FeCl₃ oxidant. XRD, SEM and TEM results showed that PPy doped with Pt were highly porous, nanocrystalline composites. The PPy-Pt-PtE modified electrode observed reversible behavior with ferricyanide system which had about 2.05 times more surface area and exhibited higher currents for glucose oxidation compared to bare PtE. Glucose was sensed in the range of 100mM to 1000 mM from the linear regression plotted R²= 0.990 and R²= 0.994 the sensitivity was found to be 0.047 mA/mM~cm² and 0.0445 mA/mM~cm². These results indicate that PPy-Pt-PtE exhibited good platform and could be used for voltammetric determination of glucose.

Keywords

PPy-Pt nanocomposite, electrochemical analysis, glucose sensor, cyclic voltammetry.