Screen Printing Preparation of Porous Cu Integrated Electrode As a High Sensitivity Enzyme-Free Glucose Sensor

Abstract Herein, a three-electrode coplanar integrated electrode was prepared by the screen-printing process. By designing a reasonable electrode structure, a scheme for the preparation of three-electrode coplanar Cu (OH)2/Ag/AgCl/C/Al2O3 integrated electrode by screen printing was proposed. The morphological structure of the material was investigated by SEM, EDS, and XRD characterization methods. Moreover, the availability of the electrodes was characterized macroscopically using an electrochemical workstation. As the results showed, the innovative sensor exhibited excellent detection performance for the catalytic oxidation of glucose. Electrode sensitivity was up to 14.376 mA mM−1 cm−2 in the glucose range of 1 μM–0.05 mM, while, excellent interference immunity and reproducibility were achieved.