Fig. 1. (a) TEM and (b) HRTEM images of Cu₂S icosapods. The inset of b displays the HRTEM image taken from the white dashed square. (c) XRD pattern of the Cu₂S icosapods. The standard diffraction peaks for chalcocite Cu₂S (PDF#26-1116) are used as references. (d) SEM-EDX profile and the corresponding elemental contents (inset) of the Cu₂S icosapods. (e) HAADF-STEM image and the corresponding EDS elemental mappings of the Cu₂S icosapods. (f) High-resolution XPS spectrum of Cu 2p for the Cu₂S icosapods.