Fig. 1. Morphological and chemical structure analysis of GO and prGO. The SEM images of (a) GO and (b) prGO sheets. The tapping mode AFM topographic images of (c) GO and (e) prGO sheets, and the height profiles of (d) GO and (f) prGO sheets. (g) FTIR-ATR spectra of GO and prGO. (h) XRD spectra of GO and prGO.