Table 1.

Characterization of Multiwalled Carbon Nanotubes (MWCNTs)

	MWCNT 1	MWCNT 2
Chemical structure
TEM
Suspension in plasma (24 hrs)
Diameter (nm)	30–50 nm (outer); 5–12 nm (inner)	30–50 nm (outer); 5–12 nm (inner)
Zeta potential (mV in H2O and plasma)	−62.7, −6.1	−60.2, −6.5
Functional group loading (mmol/g)	0.4	0.4
C, Cl, Fe, Ni, S (%)	97.37, 0.20, 0.55, 1.86, 0.02	97.37, 0.20, 0.55, 1.86, 0.02
Length distribution
Length distribution inside cells