Fig. 3: Catalytic performance of Fe-SAC-x.

a Differences in degradation of SMX in the PMS-based heterogeneous catalytic oxidation systems. b Contribution of homogeneous Fe ions to SMX degradation in Fe-SAC-41.31/PMS system. c Comparison of removal efficiency, k, TOF, TOC, and MSA in Fe-SAC-41.31/PMS system and Fe-SAC-T/PMS system, respectively. d Nyquist plots of indicated catalysts. e LSV curves and f corresponding Tafel plots of different catalysts with the addition of PMS. g Degradation performance of SMX by Fe-SAC-41.31/PMS system under the interference of inorganic anion and NOM. h Removal kinetic constants of personal care and pharmaceutical products (PPCPs), phenolics, and dyes, and their comparison with literature (data points are annotated with reference numbers, and full datasets are provided in Supplementary Table 7). i Reuse performance of Fe-SAC-41.31. The error bars in the figures represent the standard deviations from triplicate tests.