Figure 1: Electron microscopic images of Pt-CTF/CP.

Representative SEM images of (a) Pt-CTF/CP and (b) Pt-CTF. (c) A representative high-resolution transmission electron microscopy (HR-TEM) image of Pt-CTF/CP and (d) the corresponding high-angle annular dark-field scanning transmission electron microscopy image. (e) Another HR-TEM image of Pt-CTF/CP and the corresponding EDX mappings for C, N and Pt atoms. Scale bar, 1 μm (a,b) and 10 nm (c–e). (f) Schematic illustration of Pt-CTF/CP (blue: N, red: Pt and black: C, Chlorine atoms are not shown for clarity).