Table 1.

The C/O ratios and relative concentrations of functional groups determined by deconvolution of C1s XPS spectra for rGOs obtained using sodium silicate, alkali-barium silicate and magnesium silicate glasses.

Component	Defects	C=C	C-C	C-OH & C-O-C $({\mathit{D}}_{\mathrm{GO}\mathit{/}\mathrm{rGO}}^{\mathit{BasalPlane}})$	>C=O $({\mathit{D}}_{\mathrm{GO}\mathit{/}\mathrm{rGO}}^{C\mathbf{=}O})$	O=C-OH $({\mathit{D}}_{\mathrm{GO}\mathit{/}\mathrm{rGO}}^{\mathit{COOH}})$	C/O Ratio
Binding Energy (eV)	283.9	284.6	284.9	286.7	288.2	288.9
GO	0.109	0.182	0.115	0.532	0.042	0.02	0.68
rGO_S-gl	0.010	0.729	0.058	0.098	0.077	0.028	4.22
rGO_AB-gl	0.016	0.768	0.063	0.095	0.039	0.018	5.30
rGO_Mg-gl	0.016	0.793	0.073	0.075	0.025	0.018	7.41