(a)
(b)
Figure 3: CV (a) and CA (b) curves of (A) PASG.E, (B) PASGN.E, (C) PASG.N, and (D) PASGN.N catalysts in a (NaOH 0.5 M + C2H5OH 1 M) solution at a scan rate of 50 mV·s−1.