Skip to main content
. 2018 Apr 29;11(5):702. doi: 10.3390/ma11050702

Figure 4.

Figure 4

(A) Cyclic voltammograms measured with g-C3N4, poly(BPE), poly(BPE)/g-C3N4 composite-modified glassy carbon electrode (GCE) in a solution of 5 mM Fe(CN)63−/4− containing 0.1 M KCl. (B) Differential pulse voltammogram (DPV) of g-C3N4, poly(BPE), 10 wt % poly(BPE)/g-C3N4 composite-modified GCE in 0.1 M acetate buffer solution (ABS) (pH = 4.5) containing 2 μM of Cd2+ and Pb2+. Deposition potential: −1.4 V, deposition time: 210 s, pulse width: 50 ms; pulse period: 100 ms; increment potential: 2 mV.