Research Article
Impact on CO2 Uptake of MWCNT after Acid Treatment Study
Table 4
Oxidation results from literature.
| | Reference | Material | Oxidizing agent | Time of the oxidation step [h] | Temperature of the oxidation step [K] | Oxidation ratio at.% O : at.% C |
| | This research | MWCNT | Pristine | — | — | 0.011 | | HNO3 | 6 | 373 | 0.080 | | HNO3/H2SO4 | 6 | 373 | 0.092 |
| | [24] | CNF | Pristine | — | — | 0.016 | | Conc. HNO3 | 2 | Not stated | 0.069 |
| | [27] | MWCNT | Pristine | — | — | 0.012 | | 4M HNO3/H2SO4 | 12 | Boiling point | 0.024 | | 4M HNO3/H2SO4 | 24 | Boiling point | 0.072 | | 4M HNO3/H2SO4 | 48 | Boiling point | 0.078 | | 4M HNO3/H2SO4 | 96 | Boiling point | 0.096 | | 4M HNO3/H2SO4 | 168 | Boiling point | 0.107 |
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