Effect of the carbon nanotube surface characteristics on the conductivity and dielectric constant of carbon nanotube/poly(vinylidene fluoride) composites

Table 1 BET surface areas obtained by adsorption of N₂ at -196°C and amounts of CO₂ and CO obtained by integration of areas under TPD spectra

Sample	CNTs	CNTox	CNTox400	CNTox900
BET surface area (m²/g)	254	400	432	449
pH_PZC	7.3	4.2	6.9	7.4
CO₂ (μmol/g)	70	778	230	24
CO (μmol/g)	193	1638	1512	204
CO/CO₂	2.76	2.11	6.57	8.50