fig2

Figure 2. HAADF-STEM and HRTEM images of the reduced 0.3Pt/CNTs-CIW (A and B) and 0.3Pt/CNTs-IW (C and D), the Pt clusters in (B and D) are marked by red cycles. CIW: Colloidal impregnation; CNTs: carbon nanotubes; HAADF-STEM: high-angle annular dark-field scanning transmission electron microscopy; HRTEM: high-resolution transmission electron microscopy; IW: incipient wetness impregnation.





