Table 1 Characterization of MWCNT Material
Measure | MWCNT-7 | MWCNT-HT | MWCNT-ND | |
|---|---|---|---|---|
Mean diameter (nm) | 49 ± 13a | 57 ± 24 | 30 ± 23 | |
Mean length (μm) | 5 ± 4a | 5 ± 4 | 2 ± 3 | |
Hydrodynamic diameter (nm) | 411 ± 16 | 499 ± 15 | 432 ± 18 | |
Zeta potential (mV) | − 40 ± 1 | − 51 ± 1 | − 49 ± 2 | |
Metal Contaminant (%Wt, SD) | Cr | 0.023 ± 0.006 | 0.04 ± 0.01 | 0.020 ± 0.006 |
Fe | 0.020 ± 0.006 | 0.10 ± 0.03 | 0.09 ± 0.03 | |
Ni | 0.020 ± 0.006 | 0.040 ± 0.006 | 0.08 ± 0.03 | |
Co | < 0.002 ± 0.000 | < 0.002 ± 0.000 | < 0.002 ± 0.000 | |