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Figure 2. (A) Flow-through wastewater treatment setup; (B) PFOA removal efficiency and Fe/Co ion leaching using a membrane loaded with (FeTCPP)Co₂(MeIm)₂; (C) Comparison of the rate constant (k), PMS dosage, and initial PFOA concentration for (FeTCPP)Co₂(MeIm)₂ against reported PMS-activating catalysts; (D) Photograph of the gram-scale (FeTCPP)Co₂(MeIm)₂ sample with its structure inset. This figure is adapted with permission^[3]. Copyright 2026, Springer Nature. PFOA: Perfluorooctanoic acid; PMS: peroxymonosulfate.