Table 3.
Surface groups (mmol.g−1) in carbon aerogels determined by Boehm titration and pH at the point of zero charge.
| GROUP |
Lactonic |
Carboxylic |
Fenolic |
Carbonyl |
Total Acidity |
Total Basicity |
Total Groups |
pHpcc |
|---|---|---|---|---|---|---|---|---|
| SAMPLE | mmol.g−1 | mmol.g−1 | mmol.g−1 | mmol.g−1 | mmol.g−1 | mmol.g−1 | mmol.g−1 | |
| Ae25 | 0.885 | 2.111 | 0.045 | 0.000 | 3.041 | 0.825 | 3.865 | 6.12 |
| Ae50 | 0.936 | 2.133 | 0.000 | 0.000 | 3.069 | 0.491 | 3.560 | 5.97 |
| Ae100 | 0.828 | 1.905 | 0.000 | 0.000 | 2.733 | 0.502 | 3.235 | 5.76 |
| Ae200 | 0.902 | 2.064 | 0.042 | 0.000 | 3.009 | 0.975 | 3.984 | 5.70 |
| Ae400 | 0.946 | 2.255 | 0.000 | 0.000 | 3.200 | 0.961 | 4.161 | 5.65 |
| Ae600 | 0.940 | 2.829 | 0.044 | 0.000 | 3.813 | 0.864 | 4.677 | 5.41 |
| Ae800 | 0.921 | 2.229 | 0.043 | 0.000 | 3.193 | 1.065 | 4.258 | 5.50 |
| Ae1500 | 1.041 | 2.026 | 0.045 | 0.000 | 3.112 | 0.938 | 4.051 | 5.45 |