Disposable Nonenzymatic Uric Acid and Creatinine Sensors Using PAD Coupled with Screen-Printed Reduced Graphene Oxide-Gold Nanocomposites

Figure 6

Chronoamperograms at the PDA-rGO/Au in 0.1 M PBS pH 6.0 containing different concentrations of uric acid at +0.25 V versus Ag/AgCl ink. The inset shows (a) the calibration curve for uric acid detection, n = 3, and (b) the enlarged chronoamperograms of uric acid from 0 to 80 μM.