One-step electrochemical deposition of Polypyrrole-Chitosan-Iron oxide nanocomposite films for non-enzymatic glucose biosensor

摘要

One-step electrodeposition method of Polypyrrole-Chitosan-Iron oxide (Ppy-CS-Fe3O4) nanocomposite films (Ppy-CS-Fe3O4NP/ITO) has been developed for the fabrication of advanced composite coatings for biosensors applications. The FESEM and EDX results provide the evidence of successful incorporation of Fe3O4 into Ppy-CS molecules. The presence of Fe3O4 nanoparticles in the nanocomposite films was further confirmed by the XRD and XPS spectrums. The fabricated electrode Ppy-CS-Fe3O4 NP/ITO shows a fast amperometric response with high selectivity to detect glucose non-enzymatically with improved linearity (1-16 mM) and the detection limit of (234 mu M) at a signal-to-noise ratio (S/N=3.0). (C) 2016 Elsevier B.V. All rights reserved.