“…As mentioned in previous literatures, cOH, O 2 c À and CO 3 c À were expected in the SPC system. 16,17,36 In this work, isopropanol (IPA) was used to study the existence of cOH, because it has a high reaction rate with cOH (k IPA, cOH ¼ 3.9 Â 10 9 M À1 s À1 ) and a low reaction rate with [47][48][49] Meanwhile, Phenol (PhOH) was employed as cOH and CO 3 c À scavenger, which reacts rapidly with cOH (k PhOH, cOH ¼ 6 Â 10 8 M À1 s À1 ) and CO 3 c À (k PhOH, CO 3 c À ¼ 1.2 Â 10 9 M À1 s À1 ), 16,50 and slowly with O 2 c À (k PhOH, O 2 c À ¼ 5.8 Â 10 2 M À1 s À1 ). 51 BPA degradation performance in the absence and presence of quenching agents was presented in Fig.…”