Investigation about electrocatalytic oxidation of glucose on loaded Ag nanoparticles on functionalized carbon nanotubes

Abstract

Silver nanoparticle-modified glassy carbon electrode was prepared by electrodeposition forming silver nanoparticles on functionalized multiwall carbon nanotubes (MWCNT) matrix. The electrooxidation of glucose in 0.1 M NaOH was studied by using cyclic voltammetry. The transmission electron microscopy (TEM) and scanning electron microscopy (SEM) images showed that the used functionalized MWCNT-base is favorable for the construction of a stable layer on the surface of modified electrode. The electrode has surface-confined nanoparticles showing effective catalytic behavior in the studies of glucose oxidation. Investigations showed at the first glucose was catalytically oxidized by AgO, and then, the reaction glucose oxidation intermediates with Ag2O were followed stepwisely. Based on the obtained cyclic voltammetric results, differential pulsed voltammetry was used for detection of glucose.