A Non-Enzyme Hydrogen Peroxide Biosensor Based on Fe3O4/RGO Nanocomposite Material

A sensitive non-enzyme hydrogen peroxide (H2O2) sensor has been prepared based on Fe3O4/reduced graphene oxide (Fe3O4/RGO) nanocomposite material. The sensitivity of Fe3O4/RGO modified electrode toward the electrochemical reduction of H2O2 is higher than that of Fe3O4 or Fe3O4/GO modified electrodes. A linear range of H2O2 concentration is obtained from 5.0 x 10(-7) to 3.0 x 10(-3) M with a detection limit of 1.8 x 10(-7) M (S/N=3). The Fe3O4/RGO modified electrode also exhibits high selectivity and stability in the detection of H2O2, which suggests that Fe3O4/RGO nanocomposite material provides a promising platform for the non-enzyme electrochemical sensor. c The Author(s) 2014. Published by ECS. This is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial No Derivatives 4.0 License (CC BY-NC-ND, http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits non-commercial reuse, distribution, and reproduction in any medium, provided the original work is not changed in any way and is properly cited. For permission for commercial reuse, please email: oa@electrochem.org. All rights reserved.