Fig. 8

XPS analysis of (a) GO/PVA/Al, (b) rGO/Al-p, (c) and rGO/Al-d hybrid materials together with (d) Raman spectra of pristine GO (black line), rGO/Al-d (green line) and rGO/Al-p (red line). (e), (f) HRTEM images of rGO/Al-p and rGO/Al-d together with (g), (h) their corresponding EELS spectra acquired from the marked points ‘1–6’in (e) and (f) (Jang et al. 2017). Reprinted from Jang et al. (2017) (Appl. Surf. Sci. 407, 1–7) with Applied Surface Science’s permission