Fig. 4: Structural and chemical states analysis.
From: Data-driven discovery of biaxially strained single atoms array for hydrogen production
a Mo K-edge EXAFS spectra. The inset in (a) is the magnified Mo absorption edges. b The corresponding Mo average oxidation states and d-band hole counts calculated by white line peaks. c R space profiles of controlled SAA Au-bMoSe2 and commercial MoSe2. d FT-EXAFS spectra of Au L3-edge EXAFS spectra and corresponding fitting results (first coordination shell). e–h Wavelet transform of EXAFS data for Au foil, SAA Au-bMoSe2 (S), SAA Au-bMoSe2 (M), and SAA Au-bMoSe2 (L). i–k XPS spectra of Se for (i) SAA Au-bMoSe2 (S), (j) SAA Au-bMoSe2 (M), and (k) SAA Au-bMoSe2 (L). The orange and blue peaks in (i–k) indicate 1 T and 2H phases of MoSe2, respectively.
