CuO Nanostructure Modified Pencil Graphite Electrode for Non-Enzymatic Detection of Glucose

摘要

Present work describes the facile one-step wet chemical synthesis of CuO nanostructure and its potential application in non-enzymatic glucose sensor. The as synthesized CuO powder sample is characterized by XRD. FESEM and EDX. Successful formation of CuO with monoclinic phase is verified from XRD. Uniform distribution of grains with size 40-50 nm is observed in the FESEM micrographs. CuO nanostructure modified electrode exhibits almost 1.9 times larger current than bare electrode, implies better electrochemical response compared to the unmodified/bare electrode. Large surface area and fast redox ability of CuO nanostructure demonstrated direct electrocatalytic oxidation of glucose with enhanced sensor responses. The developed sensor exhibits linear dependence range from 0.5-47mM, having LOD as low as 57μM.