Research Article
Sol-Gel Synthesis of TiO2 Nanocrystalline Particles with Enhanced Surface Area through the Reverse Micelle Approach
Table 1
Structural and morphological parameters of the as-prepared TiO2 samples.
| Sample | Phase | Crystallite size (nm) | Density (g·cm−3) | BET surface area (m2·g−1) | Particle size2 (nm) |
| R0 | Amorphous | n.e.1 | 1.840 ± 0.005 | 15.8 ± 0. 9 | 205.4 ± 0.2 | R1 | Amorphous | n.e. | 1.803 ± 0.005 | 74.4 ± 0.3 | 37.9 ± 0.4 | R2 | Anatase | 4.1 ± 0.6 | 1.471 ± 0.001 | 34.5 ± 0.2 | 118.2 ± 0.7 | R15 | Anatase | 6.1 ± 0.3 | 2.173 ± 0.006 | 77.6 ± 0.6 | 35.6 ± 0.3 | R24 (W10) | Anatase | 6.3 ± 0.5 | 3.133 ± 0.006 | 178.8 ± 1 | 10.7 ± 0.6 | W5 | Anatase | 5.4 ± 0.4 | 3.180 ± 0.040 | 239.4 ± 3 | 7.9 ± 0.2 | W2 | Anatase | 4.6 ± 0.1 | 2.753 ± 0.005 | 224.6 ± 3 | 9.7 ± 0.4 |
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1Not evaluable. 2Calculated under the assumption of spherical symmetry according to equation ( 1). |