Detection of Ascorbic Acid Using Green Synthesized Carbon Quantum Dots

Figure 3

(a) Cyclic voltammograms of 1 mM AA on the CQDs/GCE at different scanning rates (50, 100, 150, 200, and 250 mV s^-1) in 0.1 M PBS (pH 7.0). (b) The effect of scanning rate on the peak current.

(a)

(b)