Fig. 1: Characterizations for pristine NCNS, Co-NPs/NCNS, and proposed synthesis strategies for Co SAC. | Nature Communications

Fig. 1: Characterizations for pristine NCNS, Co-NPs/NCNS, and proposed synthesis strategies for Co SAC.

From: A general strategy for preparing pyrrolic-N4 type single-atom catalysts via pre-located isolated atoms

Fig. 1

a HAADF-STEM image of NCNS. b XANES of NCNS at N K edge. c FT-EXAFS of Co-NPs/NCNS, as well as Co foil and Co3O4 reference at Co K edge, respectively. d Assumption of the Co ALD process on pristine NCNS and Pt1/NCNS. The white, brown, blue, and orange spheres represent H, C, N, and Co, respectively.

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