Fig. 2: Structural analyses of MoNi4 and WNi4 alloys. | Nature Communications

Fig. 2: Structural analyses of MoNi4 and WNi4 alloys.

From: Bimetallic nickel-molybdenum/tungsten nanoalloys for high-efficiency hydrogen oxidation catalysis in alkaline electrolytes

Fig. 2

a, b Ni K-edge XANES spectra and corresponding Fourier transforms of k3-weighted EXAFS spectra for Mo(W)Ni4 alloys, freshly synthesized Ni, Ni foil, and NiO reference. c The average coordination numbers (CN) in the first coordination shell of Ni atoms for MoNi4, WNi4, and freshly synthesized Ni by EXAFS spectra curve fitting. The CN of bulk Ni (Ni foil) is 12. d Fourier transforms of k3-weighted EXAFS spectra of Mo K-edge (up) and W L3-edge (down), respectively. e Corresponding wavelet transforms of k3-weighted EXAFS spectra of Mo K-edge (up) and W L3-edge (down), respectively.

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