Fig. 4: PMS activation and identification of reactive oxygen species. | Nature Communications

Fig. 4: PMS activation and identification of reactive oxygen species.

From: Breaking the oxo-wall for Co(IV)-oxo species and their nanoconfined catalytic performance within Ce-Co lamellar membrane

Fig. 4: PMS activation and identification of reactive oxygen species.

a Ranitidine (RNTD) removal performance in various systems. b Qualitative analysis of reactive species based on electron paramagnetic resonance (EPR) spectra in Ce-Co TCPP/PMS and Al-Co TCPP/PMS systems. Dot symbol sizes represent the concentration of reactive species. c Comparison of RNTD removal efficiencies under different quenching conditions in Ce-Co TCPP/PMS and Al-Co TCPP/PMS systems. d In-situ Raman spectra of Ce-Co TCPP/PMS and Al-Co TCPP/PMS systems. e Degradation profiles of different probe organic compounds in the Ce-Co TCPP/PMS system. f Degradation of methyl phenyl sulfoxide (PMSO) and formation of PMSO2 in the Ce-Co TCPP/PMS system. g Steady-state concentrations of various reactive species in the Ce-Co TCPP/PMS system (inset: oxidation contributions of different reactive species to RNTD degradation). Reaction condition: [Ce-Co TCPP] = 20 mg/L; [RNTD] or [probe organic compounds] = 5 mg/L; [PMSO] = 0.15 mM; [peroxymonosulfate (PMS)] = 0.2 mM; Temperature = 298.15 K; pH = 4.3. Data are presented as mean values, and error bars represent the standard deviation calculated from three independent measurements (n = 3). Source data are provided as a Source Data file.

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