Tuning oxidant and antioxidant activities of ceria by anchoring copper single-site for antibacterial application

Abstract The reaction system of hydrogen peroxide (H 2 O 2 ) catalyzed by nanozyme has a broad prospect in antibacterial treatment. However, the complex catalytic activities of nanozymes lead to multiple pathways reacting in parallel, causing uncertain antibacterial results. New approach to effectively regulate the multiple catalytic activities of nanozyme is in urgent need. Herein, Cu single site is modified on nanoceria with various catalytic activities, such as peroxidase-like activity (POD) and hydroxyl radical antioxidant capacity (HORAC). Benefiting from the interaction between coordinated Cu and CeO 2 substrate, POD is enhanced while HORAC is inhibited, which is further confirmed by density functional…

• SS
  Salt Science Research Foundation

  Award: BL14W1
• NN
  National Natural Science Foundation of China

  Awards: 22325101, 52271127, 51972003
• NN
  National Natural Science Foundation of China-Yunnan Joint Fund

  Award: 22325101
• BS
  Beijing Synchrotron Radiation Facility

  Award: BL14W1