(A) Fourier transforms of k³-weighted EXAFS oscillations obtained at the Cu K-edge of Cu foil, Cu₂O, CuO and nZVC-Cu(II)-rGO. (B) Cu 2p and C 1s of nZVC-Cu(II)-rGO. (C) Formation of active electron-poor/rich micro-regions on nZVC-Cu(II)-rGO surface. (D) 2-CP degradation curves in various suspensions with H₂O₂. (E) Actual and stoichiometric H₂O₂ consumptions and the utilization efficiency of H₂O₂ during 2-CP degradation in the nZVC-Cu(II)-rGO (5 wt %) suspension. (F) BMPO spin-trapping EPR spectra for HO₂^•/O₂^•− in the nZVC-Cu(II)-rGO suspensions in the absence of H₂O₂ with/without pollutants. Adapted with permission from ref. [69], Copyright©2019, Elsevier.