Graphene/Gold Nanocomposites-Based Thin Films as an Enhanced Sensing Platform for Voltammetric Detection of Cr(VI) Ions

Figure 3

Voltammetric responses of bare gold (Au) electrode in different electrolytes: (a) 0.1 M HCl and (b) 0.01 M HCl, respectively (scan rate = 50 mVs⁻¹).

(a)

(b)