of the modified electrodes are shown in
Figure 3. Figure 3A shows the silver nanoparticles deposited
on the GCE electrode surface. The silver nanoparticles have a
relatively uniform shape and dispersal. In addition, Figure 3A
denotes the delphinidin immobilized on the silver nanoparticles
that are deposited on the GCE surface, which proves
the immobilization of delphinidin on the silver nanoparticles.