Fig. 2: Preparation and characterization of cobalt(II) oxide clusters.
From: Promoting CO2 methanation via ligand-stabilized metal oxide clusters as hydrogen-donating motifs
a–d Transmission electron micrograph images and e–h corresponding size distribution of CoO clusters. The white light dots in (a–c) and dark black dots in (d) are the CoO clusters. Insets in (a–d) are the enlarged images showing the individual CoO cluster in red square. The scale bars in (a, b) and (c, d) are 5 and 10 nm, respectively.
