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.

SamplePhaseCrystallite size (nm)Density (g·cm−3)BET surface area (m2·g−1)Particle size2 (nm)

R0Amorphousn.e.11.840 ± 0.00515.8 ± 0. 9205.4 ± 0.2
R1Amorphousn.e.1.803 ± 0.00574.4 ± 0.337.9 ± 0.4
R2Anatase4.1 ± 0.61.471 ± 0.00134.5 ± 0.2118.2 ± 0.7
R15Anatase6.1 ± 0.32.173 ± 0.00677.6 ± 0.635.6 ± 0.3
R24 (W10)Anatase6.3 ± 0.53.133 ± 0.006178.8 ± 110.7 ± 0.6
W5Anatase5.4 ± 0.43.180 ± 0.040239.4 ± 37.9 ± 0.2
W2Anatase4.6 ± 0.12.753 ± 0.005224.6 ± 39.7 ± 0.4

1Not evaluable. 2Calculated under the assumption of spherical symmetry according to equation (1).