Fig. 1: Morphological characterization.
From: Atomically dispersed MoNi alloy catalyst for partial oxidation of methane

Representative aberration-corrected high-angle annular dark-field scanning transmission electron microscope (AC-HAADF-STEM) images of (a) Ni, (b) atomically dispersed MoNi alloy and (c) 5Ni1Mo alloy. d–f Zoom images for (a) Ni, (b) AD MoNi alloy and (c) 5Ni1Mo alloy, respectively. The bright dots corresponding to Mo atom in MoNi alloy. g–i Line profiles for (d) Ni, (e) AD MoNi alloy and (f) 5Ni1Mo alloy, respectively. The interplanar distances are determined along the lattice according to the arrow direction in (d–f). j–l Schemes of atomic structure for (j) Ni, (k) AD MoNi alloy and (l) 5Ni1Mo alloy, respectively. Ni: blue ball; Mo: purple ball.