RESEARCH / A0565
Crystalline Dual-Porous Covalent Triazine Frameworks as a New Platform for Efficient Electrocatalysis
Read the original paper · 10.1002/anie.202317664 ↗
Source figures may contain other techniques and soft X-ray spectra. C, N and O measurements are outside our current hard-XAFS testing range.
Figure 1. (a) Schematic illustration for the synthesis of Fe-CTF. (b) The structural model of Fe-CTF. (c) Experimental, simulated, and Pawley refined PXRD patterns of Fe-CTF. (d) FT-IR spectra of DCP monomer and Fe-CTF. (e) N2 adsorption-desorption curve of Fe-CTF at 77 K (inset shows the pore-size distribution profile). (f) Comparison of Fe K-edge XANES spectra of Fe foil, Fe2O3, FePc, and Fe-CTF. (g) Fourier transform of the EXAFS spectra of Fe-CTF and control samples. (h) Wavelet transform of Fe K-edge EXAFS for Fe-CTF, FePc, and Fe foil. (i) EXAFS analysis of Fe-CTF at R and k space, respectively. (j) Schematic model of Fe coordination environment in Fe-CTF.
Figure 5. (a) Fe K-edge XANES spectra at different states. (b) Differential Δμ XANES spectra obtained by subtracting the normalized spectrum at every potential to the spectrum recorded at before. (c) Fe K-edge FT-EXAFS spectra. Corresponding fitting curves of Fe K-edge at d) 0.9 V, e) 0.7 V, f) 0.5 V, g) 0.3 V. (h) The evolution of Fe coordination environment in Fe-CTF NSs at different voltages based on the analysis of d–g.