RESEARCH / A0021
Deciphering the active site in Ni–Cu bimetallic atomic clusters for selective CO2-to-CO electrocatalysis
Read the original paper · 10.1016/j.seppur.2026.139495 ↗
Source figures may contain other techniques and soft X-ray spectra. C, N and O measurements are outside our current hard-XAFS testing range.
Fig. 2. Normalized XANES spectra at (a) Cu K-edge and (d) Ni K-edge, comparing NiCu-HACs/NC with 4NiCu-HACs/NC, single-metal ACs/NC controls, and reference materials. The corresponding magnitude of FT-EXAFS functions are presented in (b) for Cu and (e) for Ni. Detailed coordination parameters were derived from EXAFS fitting in R-space for the (c) Cu and (f) Ni edges of NiCu-HACs/NC. (g) Continuous wavelet transforms plots of the k2-weighted EXAFS data, resolving the atomic neighbors for Cu and Ni sites.