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. 2019 Jun 1;5(6):e01789. doi: 10.1016/j.heliyon.2019.e01789

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