Elemental composition of the various graphitic samples in wt%.

Element	Graphite	GO	RGO-1	RGO-2
Carbon (wt%)	95.0 ± 1.20	52.6 ± 0.10	91.9 ± 1.95	98.4 ± 1.50
Oxygen (wt%)	3.31 ± 0.10	39.9 ± 1.20	7.01 ± 0.20	1.51 ± 0.06
Hydrogen (wt%)	1.73 ± 0.06	7.40 ± 0.22	1.20 ± 0.05	0.100 ± 0.004
Total (wt%)	100.04 ± 1.36	99.9 ± 1.52	100.11 ± 2.20	100.01 ± 1.564