Fig. 4

Microscopic characterization of the PFAC, CCS, and PFAC@CCS composites. The wide and magnified FESEM images of (a) the PFAC sample. (b and d) the PFAC@CCS composites. (c) the CCS sample.

Microscopic characterization of the PFAC, CCS, and PFAC@CCS composites. The wide and magnified FESEM images of (a) the PFAC sample. (b and d) the PFAC@CCS composites. (c) the CCS sample.