Table 1 Physicochemical parameters derived from nitrogen physisorption and XRD datas for different samples (d100is the interplanar spacing of the hexagonal structure;a0represents the pore-to-pore distance of the hexagonal structure)
Samples | d100(nm) | a0(nm) | SBET(m2/g) | Pore diameter (nm) | Pore volume (cm3/g) |
|---|---|---|---|---|---|
Extracted SBA-15 | 10.5 | 12.1 | 807 | 6.41 | 0.985 |
8 wt% ZnO/SBA-15 | 9.9 | 11.4 | 683 | 6.11 | 0.921 |
15 wt% ZnO/SBA-15 | 10.0 | 11.6 | 564 | 6.07 | 0.794 |
20 wt% ZnO/SBA-15 | 10.3 | 11.9 | 498 | 6.04 | 0.716 |