Voltammetric Determination of Rhodamine B Using a ZIF-67/Reduced Graphene Oxide Modified Electrode

Figure 7

Cyclic voltammograms (CVs) obtained in aqueous solution (0.1 M KCl) containing 1.0 mM K₃[Fe(CN)₆] at designated scan rate (from 0.1 to 0.4 Vs^-1) at different electrodes (a) bare GCE. (b) The corresponding linear plot of peak current () vs. v^1/2 and (c) ZIF-67/rGO-GCE. (d) the corresponding linear plot of vs. v^1/2.

(a)

(b)

(c)

(d)