Gold nanostructure decorated 3D porous carbon architectures as a non-enzymatic glucose sensor

Abstract

We proposed a novel non-enzymatic glucose sensor based on 3D carbon electrodes with nanoporous sponge-like networks (PC) decorated with gold particles with dendritic nanostructures (AuNs). The nanoporous carbon electrodes were fabricated by combining a simple, cost-effective, reproducible microfabrication technology known as carbon-microelectromechanical-systems (carbon-MEMS) and microwave plasma etching process. AuNs were electrodeposited on PC electrodes in a short time period. Electrochemical oxidation of glucose with AuNs/PC electrodes was examined by cyclic voltammetry. The AuNs/PC electrodes based sensor exhibits 3.8-fold high sensitivity, and 27.7-fold better limit of detection as compared to AuNs/bare carbon electrodes.