fig1

Figure 1. Preparation and structure characterizations. (A) Schematic illustration of the synthesized procedure of CAC-x. (B) SEM image of CAC. (C) SEM image of CAC-4. (D) SEM image of CAC-24. (E) TEM image of CAC. (F) TEM image of CAC-4. (G) TEM image of CAC-24. (H and I) Particle size distribution of CAC-x measured by laser particle analyzer. (J) The volume of 0.07 g CAC and CAC-x samples after vibration.