Table 2.

Carbon nanomaterials (CNMs) used in the studies: MWCNTs—multi-walled carbon nanotubes, SWCNTs—single-walled carbon nanotubes, CNHs—carbon nanohorns.

Particle designation in this study	Nanomaterials description and the supplier	External and internal particle diameter (de and din)	Length (L)	Aspect ratio (AR = L/de)	SSA (m2/g)
MW-1	MWCNTs 8 nm (Cheap Tubes Inc., USA)	< 8 nm/2–5 nm	10–30 μm	1,250–3,750	445 ± 10
MW-2	MWCNTs 50 nm (Cheap Tubes Inc., USA)	50–80 nm/5–10 nm	10–20 μm	125–400	92 ± 2
MW-f	COOH functionalized graphitized MWCNTs 20–30 nm (Cheap Tubes Inc., USA)	20–30 nm/5–10 nm	10–30 μm	333–1,500	190 ± 4
SW	SWCNTs (Sigma-Aldrich)	2 nm/ND	3 μm	1,500	935 ± 20
NH	CNHs, as grown (Sigma-Aldrich)	2–5 nm/ND	40–50 nm	8–25	396 ± 10
NH-f	CNHs, oxidized (Sigma-Aldrich)	2–5 nm/ND	40–50 nm	8–25	1,279 ± 28

ND no data, SSA specific surface area²².