Fig. 2: Compositional, structural and morphological characterization of Aza-CMP-Co catalysts. | Nature Catalysis

Fig. 2: Compositional, structural and morphological characterization of Aza-CMP-Co catalysts.

From: Intramolecular hydroxyl nucleophilic attack pathway by a polymeric water oxidation catalyst with single cobalt sites

Fig. 2

a, Chemical structure of Aza-CMP-Co catalysts. b–d, PDXR (b), Raman (c) and FT–IR (d) spectra of Aza-CMP-Co and Aza-CMP-Co (exfoliated). e–g, High-resolution XPS spectra of Aza-CMP-Co and Aza-CMP-Co (exfoliated) for regions Co 2p (e), N 1s (f) and C 1s (g). h,i, Normalized Co K-edge XANES spectra (h) and k2-weighted Co K-edge FT EXAFS spectra (i) of Aza-CMP-Co, Aza-CMP-Co (exfoliated) and reference materials. j, Experimental and fitted Co K-edge EXAFS curves of Aza-CMP-Co and Aza-CMP-Co (exfoliated). Inset: schematic model of Aza-CMP-Co for FEFF calculation. k, WTs of Aza-CMP-Co, Aza-CMP-Co (exfoliated) and reference materials. l, Atomic-resolution image of Aza-CMP-Co (red circles indicate single molecular sites). m, AFM image of Aza-CMP-Co. n, Atomic-resolution image of Aza-CMP-Co (exfoliated) (red circles indicate single molecular sites). o, AFM image of Aza-CMP-Co (exfoliated). au, Arbitrary units.

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