Table 4.
Titania loading and the textural properties of the CNTs before after acid treatment, the SBA-15, the 10, 20 and 30 wt% SBA-15 coated on aCNTs, the mesoporous titania synthesised in house and the titania supported on the various supports
| Property | rCNTs | aCNTs | SBA-15 | 10SBA-CNT | 20SBA-CNT | 30SBA-CNT | TiO2 | TiO2/CNT | TiO2/SBA-15 | TiO2/SBA-CNT |
|---|---|---|---|---|---|---|---|---|---|---|
| S BET (m2/g) | 140.3 | 149.1 | 661.6 | 209.9 | 256.4 | 431.41 | 207.8 | 241.3 | 214.0 | 301.4 |
| V total (cm3/g)a | 0.34 | 0.56 | 0.63 | 0.56 | 0.69 | 0.93 | 0.35 | 0.70 | 0.43 | 0.89 |
| PSD (nm) b | 2.89 | 2.89 | 4.00 | 3.45 | 3.45 | 3.94 | 3.52 | 3.29 | 3.29 | 5.29 |
| TiO2 loading (wt%) | N/A | N/A | N/A | N/A | N/A | N/A | 100 | 13.6 | 7.1 | 11.5 |
a Total pore volume adsorbed at a relative pressures for N2 at −196 °C
b Pore size distribution