Fig. 2: Atomic structural analysis of CuN3-SAzyme by XAFS. | Nature Communications

Fig. 2: Atomic structural analysis of CuN3-SAzyme by XAFS.

From: Enhancing radiation-resistance and peroxidase-like activity of single-atom copper nanozyme via local coordination manipulation

Fig. 2: Atomic structural analysis of CuN3-SAzyme by XAFS.

a Cu K-edge XANES spectra of CuN3-SAzyme and reference samples. b XPS spectra of Cu 2p orbital of CuN3-SAzyme and CuN4-SAzyme. c Fourier-transformed magnitudes of experimental Cu K-edge FT-EXAFS signals of CuN3-SAzyme along with reference samples at R space. d R-space FT-EXAFS of CuN3-SAzyme was fitted to obtain the quantitative local structure of Cu. e q-space FT-EXAFS fitting plots of CuN3-SAzyme. f Schematic model of CuN3-SAzyme. g–i WT-EXAFS curves of CuN3-SAzyme (g), CuN4-SAzyme (h), and Cu foil sample (i).

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