Fig. 2

SEM images of (A) Fe3O4 NPs, (B) PAN, (C) PAN-PPh., and (D) PAN-PPh./Fe3O4 nanofiber. (E) EDX spectrum of PAN-PPh./Fe3O4 nanofiber.

SEM images of (A) Fe3O4 NPs, (B) PAN, (C) PAN-PPh., and (D) PAN-PPh./Fe3O4 nanofiber. (E) EDX spectrum of PAN-PPh./Fe3O4 nanofiber.