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. 2023 Jul 10;120(29):e2305705120. doi: 10.1073/pnas.2305705120

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Copyright © 2023 the Author(s). Published by PNAS.

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Fig. 4. — (A) In situ Raman spectra of different oxidation systems. (B) EPR spectra using DMPO as trapping agents. (C) The inhibition efficiency of different quenchers on degradation of tetA by Co_SA/Ti₃C₂T_x. (D) Concentration of free •OH generated in the process of PMS activation by Co_SA/Ti₃C₂T_x. (E) Charge density of Co_SA/Ti₃C₂T_x. (F) Optimized configurations of PMS adsorbed on Co_SA/Ti₃C₂T_x. (G) Difference charge density for PMS adsorption on Co_SA/Ti₃C₂T_x and the corresponding charge transfer. Yellow and green contours represent electron accumulation and deletion, respectively. (H) Reaction pathways of PMS activation to form surface-bound •OH (H, Left) and free •OH (H, Right) at Co sites.