Detection of Ascorbic Acid Using Green Synthesized Carbon Quantum Dots

Figure 2

(a) CV grams of bare GCE (A) and CQDs/GCE (B) in 20 mM Fe(CN)₆^3-/4- containing 0.1 M KCl. (b) Nyquist plots of bare GCE (A) and CQDs/GCE (B) in 20 mM Fe(CN)₆^3-/4- containing 0.1 M KCl. (c) DPV response of bare GCE (A) and CQDs/GCE (B) in 0.1 M PBS (pH 7.0) containing 0.5 mM AA.

(a)

(b)

(c)