Fig. 2: Atomic structure analysis.
From: Catalytic ozonation mechanism over M1-N3C1 active sites
a Powder X-ray diffraction (XRD) patterns of the NC and MNC catalysts. b Co K-edge X-ray absorption near-edge structure (XANES) spectra of the CoNC and reference materials. c The extended X-ray absorption fine structure (EXAFS) spectra of the CoNC and reference materials. d Corresponding extended X-ray absorption fine structure (EXAFS) fitting curves of the CoNC at R space. e, f Charge difference isosurfaces and Bader charge of the Co-N3C1 (e) and Co-N4 (f). Isosurfaces level = 0.005. All lengths are given in Ã…. The blue, brown, and silver balls denote Co, C, and N atoms, respectively. The blue and yellow isosurfaces represent charge accumulation and depletion in the space, respectively.
