Fig. 3: Structural characterization.
From: Near-unity CO2-to-ethylene photoconversion over low coordination single-atom catalysts
a, b TEM image (a), STEM image and the corresponding EDS elemental mappings (b) of Mn1–ZnS. Inset: An enlarged HRTEM of the dotted line area. c ADF-STEM image of Mn1–ZnSv with corresponding intensity profile of the representative region (red dotted line), and the isolated single atoms highlighted with yellow circles. d Normalized Mn K-edge XANES spectra of Mn1–ZnS, Mn1–ZnSv, and the related reference samples. e Fourier-transform (FT) spectra of EXAFS oscillations for Mn1–ZnS and Mn1–ZnSv. f, g EXAFS spectrum fitting result of Mn1–ZnS (f) and Mn1–ZnSv (g) in R space. (The inserted image shows the atomic structure model of Mn1–ZnS and Mn1–ZnSv, where the balls in blue, pink, and yellow represent Zn, Mn, and S atoms). h, i Wavelet transform (WT) contour plots of Mn foil (h) and Mn1–ZnSv (i), respectively. Source data are provided as a Source Data file.
