fig11

Figure 11. (A and B) Ru K-edge (A) and Zr K-edge (B) XANES spectra of samples under different conditions; (C and D) Ru K-edge (C) and Zr K-edge (D) EXAFS spectra of samples under different conditions; (A-D) are quoted with permission from Sun et al.^[194]; (E) Wavelet-transformed K³-weighted EXAFS spectra and corresponding metal foil reference of FeCu-NC, quoted with permission from Liu et al.^[195]; (F) XRD patterns of synthesized MOFs catalysts; (G) XPS spectra of Ni₂Co₁-MOFs; (H and I) High-resolution XPS of Ni 2p (H) and Co 2p (I) of post and fresh Ni₂Co₁-MOFs; (F-I) are quoted with permission from Zhao et al.^[196]. XANES: X-ray absorption near-edge structure; EXAFS: extended X-ray absorption fine structure; XRD: X-ray diffraction; MOFs: metal-organic frameworks; XPS: X-ray photoelectron spectroscopy; FT: Fourier transform.