Figure 6

(a) C–V graph at 1 M NaOH solution with successive addition of glucose from 0 mM to 44.36 mM glucose solution. (b) Linearity graph between current density and concentration at 0.55 V of the reference voltage. (c) C–V graph with 1 M NaOH solution and 1 mM glucose concentration with different scan rates. (d) The linearity graph between current density and potential with different scan rates.