Figure 5

(a) Comparative cyclic voltammogram of B-g-C3N4, 1-RPh-g-C3N4 and 2-RPh-g-C3N4 at a scan rate of 100 mV s−1, (b) cyclic voltammogram of B-g-C3N4 at a scan rate of 10–100 mV s−1, (c) cyclic voltammogram of 1-RPh-g-C3N4 at a scan rate of 10–100 mV s−1 and (d) cyclic voltammogram of 2-RPh-g-C3N4 at a scan rate of 10–100 mV s−1.