Degradation curves of various ECs (A) without HA and (B) with HA in ultrapure water. Degradation curves of BPA, DP and ATZ in (C) municipal wastewater and (D) raw drinking water suspension. (E) Highest occupied molecular orbital (HOMO) for DP, BPA and ATZ on the HA model fragments with isovalue of 0.015 bohr^−3/2. (F) Solid EPR spectra and chronoamperometry curves of various samples. BMPO spin-trapping EPR spectra for (G) O₂^•− and (H) ^•OH with/without DP in the Fe⁰-Fe_yC_z/Fe_x-GZIF-8-rGO/HA air-saturated aqueous suspensions. Reaction conditions: (A), (B) catalyst concentration 0.6 g/L, initial ECs concentration 3.0 mg/L, initial HA concentration 10.0 mg/L, temperature 35°C; (C), (D) catalyst concentration 0.6 g/L, initial ECs concentration 3.0 mg/L, temperature 35°C. Adapted with permission from ref. [29], Copyright©2022, American Chemical Society.