fig2

Figure 2. (A) N₂ adsorption/desorption isotherms and (B) pore size distribution of Meso/Micro-FeNC; (C) XPS high-resolution spectra of C 1s and (D) N 1s for Meso/Micro-FeNC; (E) Fe K-edge XANES spectra and (F) FT k³-weighted EXAFS spectra of Fe foil, Meso/Micro-FeNC, FePc, and Fe₂O₃. Meso/Micro-FeNC: Meso/microporous Fe/N-codoped carbon; XPS: X-ray photoelectron spectroscopy; XANES: X-ray absorption near-edge structure.