Table 1.
Metal content in the CNTs
| Metal content (wt%) | MWCNT | MWCNT-F |
|---|---|---|
| Fe | 0.3 | 0.01 |
| Co | 0.006 | 0.001 |
| Ni | 1.2 | 0.1 |
| Al | 0.06 | 0.01 |
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