Table 1.
MWCNT Characteristics
MWCNT form | Mean Diameter (nm) | Length Range (μm) | Raman Band ratio (R)=ID/IG | Metal Ash Content by TGA (% weight) | Energy Dispersive spectra based concentrations | Surface area (m2/g) | Pore volume (cm3/g) |
---|---|---|---|---|---|---|---|
C-grade |
22.5 ± 1.3 |
10 - 100 |
0.29 |
4.80 |
C = 99.6 N = 0.0
O = 0.0 Fe = 0.04 |
113.10 |
0.69 |
COOH |
19.1 ± 1.6 |
40 - 100 |
0.35 |
5.15 |
C = 96.5 N = 0.0
O = 3.5 Fe = 0.07 |
111.39 |
0.60 |
N-doped | 23.3 ± 1.5 | 50 - 80 | 0.93 | 3.68 | C = 80.8 N = 19.2 O = 0.0 Fe = 0.04 | 140.15 | 0.93 |