RESEARCH / A0246
Enhancing the ORR durability of single atomic Fe-N4 active sites with implanted SiO2 nanoparticles as radical and H2O2 inhibitors
Read the original paper · 10.1038/s41467-025-65194-0 ↗
Source figures may contain other techniques and soft X-ray spectra. C, N and O measurements are outside our current hard-XAFS testing range.
Fig. 3 | X-ray absorption spectroscopy characterization of SiO2/FeNSiC and other samples. a Fe K-edge X-ray absorption near-edge structure (XANES) and (b) Fourier transform k3-weighted Fe K-edge extended X-ray absorption fine structure (FT-EXAFS) spectra of SiO2/FeNSiC, FeNSiC, FeNC, Fe2SiO4, Fe foil, FeO, Fe2O3, and FePc. c, d Experimental (black line) and fitted (red cycle) Fe FT-EXAFS fitting signals
Fig. 5 | In situ XAFS and in situ ATR-IR measurements. a In situ X-ray absorption near-edge structure (XANES) of the Fe K-edge, (b) the corresponding Fourier transform k3-weighted Fe K-edge extended X-ray absorption fine structure (FT- EXAFS) spectra and (c) In situ ATR-IR spectra were recorded on different potentials