Fig. 1: Physical characterization. | Nature Communications

Fig. 1: Physical characterization.

From: Insight into dynamic and steady-state active sites for nitrogen activation to ammonia by cobalt-based catalyst

Fig. 1: Physical characterization.The alternative text for this image may have been generated using AI.

a TEM, scale bar: 200 nm; b HR-TEM, scale bar: 10 nm; and c, d Aberration-corrected STEM images; scale bar: 5 nm of c and 2 nm of d; e HAADF-STEM images of Co–N–C; STEM-mapping of N-K; C-K; Co-K, scale bar: 50 nm; f Normalized Co K-edge XANES spectra (inset is the magnified image of f in the range of 7718–7722 eV) and g Co K-edge EXAFS spectra of Co–N–C and references.

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