Electrochemical Oxidation and Determination of Glucose Using Cyclic Voltammetry and a One‐step Prepared Nanoporous Gold Wire Electrode

A nanoporous gold wire electrode (NPGWE) was prepared using a published one‐step method from a 0.3 M oxalic acid at room temperature. It was found in this study that the surface morphology, including the pore size and the width of the ligaments, and thus the surface roughness of the NPGWE could be easily manipulated by controlling the solution stirring rate. The NPGWE was used for the study of electrochemical oxidation and determination of glucose in 0.1 M NaOH using cyclic voltammetry. The effect of two potential interferences chloride ion and ascorbic acid was assessed. The electrode showed a linear range of glucose concentration from 0.5 mM to 10 mM with a detection limit of 8 μM.