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Synthesis and structural characterizations of Co/DACN. (A) Schematic illustration for the synthesis. (B) HAADF-STEM images. (C) STEM image and corresponding elemental distributions of Co (yellow), C (green), and N (blue). (D and E) High-resolution HAADF-STEM images. (F) FT-EXAFS spectra and corresponding fitting curves at Co K-edge for Co/CN, Co/DACN, and reference samples.
