Fig. 1: Structural characterization of Hnp-Cu50Au50. | Nature Communications

Fig. 1: Structural characterization of Hnp-Cu50Au50.

From: Alloying and confinement effects on hierarchically nanoporous CuAu for efficient electrocatalytic semi-hydrogenation of terminal alkynes

Fig. 1

a SEM image of Hnp-Cu50Au50. b HAADF-STEM image of Hnp-Cu50Au50. c Atom-resolution HAADF image of Hnp-Cu50Au50. d STEM-EDX elemental mapping of Hnp-Cu50Au50. e XPS spectra of Hnp-Cu50Au50 and np-Cu in Cu 2p. f Normalized XANES at the Cu K-edge of Hnp-Cu50Au50, np-Cu, Cu foil, and CuO. g The corresponding FT-EXAFS spectra of the Cu K-edge derived from (f). WT of Cu K-edge EXAFS spectra of Cu foil (h) and Hnp-Cu50Au50 (i). Scale bars: a 100 nm, b 5 nm, c 1 nm, d 20 nm.

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