Fig. 2: Characterizations and atomic structural analysis of Co SACs with different density. | Nature Communications

Fig. 2: Characterizations and atomic structural analysis of Co SACs with different density.

From: Regulating the electronic structure through charge redistribution in dense single-atom catalysts for enhanced alkene epoxidation

Fig. 2

a–c AC HAADF-STEM images of 5.4 wt%, 10.9 wt%, and 21.2 wt% Co SAC samples. Co single atoms are marked in red circles. d Normalized Co K-edge XANES spectra. e k3-weighted Fourier transform spectra of Co1/NOC-x and reference samples. f Corresponding wavelet transform (WT) analysis. g The Co K-edge XANES experimental spectra (solid lines) and the theoretical spectra (dots) calculated with the depicted structures (insert) of Co1/NOC-x samples.

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