“…Compared the DPPHc scavenging ability with other antioxidants or nanoparticles (Table S2 †), Ti 3 C 2 can remove DPPHc in a smaller dose and shorter time, which indicates that Ti 3 C 2 has strong free radical scavenging ability and fast response. [48][49][50][51] Considering ROS play the critical role in regulation of oxidative stress balance, three representative ROS in biological conditions, H 2 O 2 , cOH and O À$ 2 , were selected to investigate systematically the powerful ROS scavenging capabilities of Ti 3 C 2 . The ability of Ti 3 C 2 to reduce H 2 O 2 is evaluated by using HRP-H 2 O 2 -TMB system, which is a classic enzymatic reaction.…”