Table 2.

Surface area, pore volume and pore radius of materials.

Sample	BET specific surface area (m2/g)	Pore Volume (cc)	Pore Radius (Å)	TiO2 crystallite size (nm)
SiO2	20.98	2.30 × 10−2	102.2	0
20TiO2/SiO2	55.45	5.23 × 10−2	93.4	6.44
30TiO2/SiO2	124.04	1.95 × 10−1	35.7	6.86
40TiO2/SiO2	165.16	3.62 × 10−1	38.2	9.05
60TiO2/SiO2	289.23	4.02 × 10−1	29.43	13.08
TiO2	135.23	2.21 × 10−1	35.6	11.5