Fig. 4

XPS spectra of (A) GO, and (B) PAN@PRGO; High resolution XPS spectra of (C) C 1s (GO), (D) C 1s (PAN@PRGO), (E) N 1s (PAN@PRGO), and (F) O 1s (PAN@PRGO).

XPS spectra of (A) GO, and (B) PAN@PRGO; High resolution XPS spectra of (C) C 1s (GO), (D) C 1s (PAN@PRGO), (E) N 1s (PAN@PRGO), and (F) O 1s (PAN@PRGO).