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| Sample | % of CTAB | Calcination time (h) | Specific surface area (m2 g−1) | Average pore size (nm) |
|---|---|---|---|---|
| C1 | 0 | 24 | 19.2 | — |
| C2 | 1.5 | 24 | 121.2 | 8 |
| C3 | 3 | 24 | 141.8 | 2 |
| C4 | 5 | 24 | 138 | 4 |
