Fig. 3: Structural characterizations of SAA Au-bMoSe2.
From: Data-driven discovery of biaxially strained single atoms array for hydrogen production
a, b TEM images. The inset in (a) shows the diameter distribution. c HAADF-STEM and elemental mapping images. d, e Spherical aberration-corrected HRTEM images. The yellow (blue) boxes correspond to 1 T (2H) phase MoSe2. Au atoms exist only on 1 T phase (yellow box), as denoted by yellow balls in (e). f–h Local arrangement of one single Au atom (f), EDS line profile along the white arrow direction (g), and biaxial strain analysis via GPA (h). The blue and orange balls indicate the Mo and Se atoms, respectively. i Comparison of EXAFS spectra of Au in SAA Au-bMoSe2, Au@bMoSe2, and Au foil. j, k XPS spectra of Au (j) and Mo (k) in SAA Au-bMoSe2. The orange and blue peaks in (k) indicate the 1 T and 2H phases of MoSe2, respectively.
