Table 1.

Elemental analysis of the carbon-based nanofillers used in the study ^a.

Nanofiller	C (wt %)	H (wt %)	O (wt %)	S (wt %)	O/C
oCB-1	85.9	0.2	13.75	<0.2	0.16
oCB-2	50.3	2.3	41.7	5.4	0.83
oCB-3	40.8	1.73	37.42	9.9	0.91
eGO	59.4	0.6	37.1	2.6	0.62

^a Elemental composition of anhydrous samples: The error in C and O content is close to 1 wt %, while the error in H content is close to 0.1 wt %; water content (as evaluated by TGA, after equilibration at room temperature in air with a relative humidity of 45%) was in the range of ±2 wt %, for all the examined samples.