Simultaneous Voltammetric Determination of Ascorbic Acid, Paracetamol, and Caffeine Using Electrochemically Reduced Graphene-Oxide-Modified Electrode

Figure 2

(a) CV curves of GO film in 0.2 M PBS (pH 7) at a scan rate of 0.04 V·s⁻¹; (b) XRD patterns of graphite, GO, and ErGO; (c) FT–IR and (d) Raman spectra of GO and ErGO.

(a)

(b)

(c)

(d)