Table 1.

XPS data for all the graphene nanomaterials, neat UPR, and TO.

Sample	Relative Atomic Percentage (%)		C/O Atomic Ratios
	C	O
GO	69.0	31.0	2.23
RGO	81.9	18.1	4.53
FGS-i	78.5	21.5	3.72
FGS	80.1	19.9	4.02
UPR	62.5	37.5	1.67
TO	90.5	9.5	9.5