@article{oai:soar-ir.repo.nii.ac.jp:00012396,
 author = {Sakai,  Toshio and Yano,  Hanae and Shibata,  Hirobumi and Endo,  Takeshi and Sakamoto,  Kazutami and Fukui,  Hiroshi and Koshikawa,  Naokiyo and Sakai,  Hideki and Abe,  Masahiko},
 issue = {1-3},
 journal = {COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS},
 month = {Nov},
 note = {Pore-size expansion of hexagonal-structured assembly of nanocrystalline titania (anatase) combined with cetyltrimethyammonium bromide (CH(3)(CH(2))(15)N(+)(CH(3))(3)Br(-), CTAB) (named as Hex-ncTiO(2)/CTAB Nanoskeleton) was achieved with the aid of cosolvent organic molecules (COMs). The pore-size expanded Hex-ncTiO(2)/CTAB Nanoskeleton was prepared through the sot-gel reaction of titanium oxysulfate sulfuric acid hydrate (TiOSO(4)center dot xH(2)SO(4)center dot xH(2)O, TiOSAH) in an aqueous solution initiated by CAB swollen micelles pre-prepared with the addition of COMs into aqueous CTAB micellar solutions at 60 degrees C (the product was named as Hex-ncTiO(2)/CTAB/COM Nanoskeleton). Long-chain alcohol (1-hexadecanol. C16OH), normal alkane (n-decane, C10) and benzene derivatives (benzene. Bz; 1,3,5-trimethylbenzene, TMB; 1,3,5-triethylbenzene, TEB; 1,3,5-triisopropylbenzene, TiPB) were used as COMs to evaluate the effects of COM solubilization site in CTAB micelles and COM molecular size on the pore-size expansion of the Hex-ncTiO(2)/CTAB/COM Nanoskeleton. We found that 1,3,5-trimethylbenzene (TMB) and 1,3,5-triethylbenzene (TEB) act as effective COMs for pore-size expansion of the Hex-ncTiO(2)/CTAB/COM Nanoskeleton in aqueous media. Pore sizes (average diameters) of the Hex-ncTiO(2)/CTAB/TMB Nanoskeleton and Hex-ncTiO(2)/CTAB/TEB Nanoskeleton were enlarged up to 4.2 nm and 4.3 nm, respectively, while pore size (average diameter) of the Hex-ncTiO(2)/CTAB Nanoskeleton prepared in the absence of any COMs was 2.9 nm. We also revealed that thermal stability of the Hex-ncTiO(2)/CTAB/TMB Nanoskeleton became higher than that of Hex-ncTiO(2)/CTAB Nanoskeleton. The hexagonally pore-structure of the Hex-ncTiO(2)/CTAB/TMB Nanoskeleton was retained up to 400 degrees C, while the hexagonally pore-structure of the Hex-ncTiO(2)/CTAB Nanoskeleton was kept up to 300 degrees C., Article, COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS. 371(1-3):29-39 (2010)},
 pages = {29--39},
 title = {Pore-size expansion of hexagonal-structured nanocrystalline titania/CTAB Nanoskeleton using cosolvent organic molecules},
 volume = {371},
 year = {2010}
}