Electrochemical determination of hydrogen peroxide using a novel prussian blue–polythiophene–graphene oxide membrane-modified glassy carbon electrode
关键字：Graphene;Chemical detection - Cyclic voltammetry - Electrocatalysis - Electrochemical electrodes - Electrodes - Electron microscopy - Electrons - Glass - Glass membrane electrodes - High resolution transmission electron microscopy - Hydrogen - Hydrogen peroxide - Membranes - Oxidation - Peroxides - Scanning electron microscopy - Signal to noise ratio - Transmission electron microscopy - Voltammetry;Electrochemical determination - Glassy carbon electrodes - Graphene oxides - Hydrogen peroxide sensor - Large specific surface areas - Modified glassy carbon electrode - Optimal experimental conditions - Prussian blue
摘要：A polythiophene–graphene oxide compound membrane and Prussian blue were deposited sequentially on the surface of a glassy carbon electrode by cyclic voltammetry. Due to its excellent electrocatalysis and its analogy with peroxidase enzymes, Prussian blue has been widely used in amperometric biosensors. The polythiophene–graphene oxide compound membrane exhibited good electroconductibility and a large specific surface area. The fabricated Prussian blue/polythiophene/graphene oxide/glassy carbon electrode was characterized by transmission electron microscopy, scanning electron microscopy, and cyclic voltammetry. Under the optimal experimental conditions, the detection of hydrogen peroxide was studied by its amperometric current–time curve. Due to the presence of polythiophene–graphene oxide compound membrane and Prussian blue, the hydrogen peroxide sensor shows a linear calibration range of 1.0 × 10<sup>−6</sup>–1.0 × 10<sup>−4</sup>mol L<sup>−1</sup>, detection limits of 3.2 × 10<sup>−7</sup>mol L<sup>−1</sup>at a signal-to-noise ratio of 3, and recoveries from 95.0 to 105.0%. The results show that the modified glassy carbon electrode has potential practical application for the determination of hydrogen peroxide based on its sensitivity and long-term stability.<br/> © 2017 Taylor & Francis.
卷号：46
期号：2
是否译文：否
