Oh, Seung-Lim Choi, Kyong-Hoon Im, Ji-Eun Wang, Kang-Kyun Yaung, Hae-Yong Kim, Kyungkon Kim, Yong-Rok 2024-01-20T16:34:23Z 2024-01-20T16:34:23Z 2021-09-05 2011-07-08 0957-4484 https://pubs.kist.re.kr/handle/201004/130185 We report the fabrication of a novel titania membrane of the dual-pore system that is strategically designed and prepared by a two-step replication process and sol-gel reaction. The primary nanoporous channel structure is fabricated by the cage-like PMMA template (CPT) obtained from the nanoporous alumina membrane and the secondary mesoporous structure is formed by the sol-gel reaction of the lyotropic precursor solution within the CPT. Furthermore the mesoporous titania membrane (MTM) frame consists of the titania nanoparticles of 10-12 nm in diameter. Morphology and structural properties of the MTM are investigated by field emission scanning electron microscopy, high resolution transmission electron microscopy, x-ray diffraction and Brunauer-Emmett-Teller surface area. The photocatalytic activity and the solar energy properties of the MTM are characterized by UV-vis spectrophotometer, spectrofluorometer and photoinduced I-V measurement. The photocatalytic test indicates that the MTM has higher efficiency than the commercial P25 with a good recyclability due to its large-scale membrane style and the preliminary result on the solar cell application shows a solar energy conversion efficiency of 3.35% for the dye-sensitized solar cell utilizing the MTM. English IOP PUBLISHING LTD ANODIC POROUS ALUMINA TIO2 NANOPARTICLES ENERGY CONVERSION GEL METHOD DEGRADATION DIOXIDE FILMS SIZE ADSORPTION PHOTOANODE Fabrication of mesoporous titania membrane of dual-pore system and its photocatalytic activity and dye-sensitized solar cell performance Article 10.1088/0957-4484/22/27/275309 1 NANOTECHNOLOGY, v.22, no.27 NANOTECHNOLOGY 22 27 scie scopus 000291021200017 2-s2.0-79957807928 Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Science & Technology - Other Topics Materials Science Physics Article ANODIC POROUS ALUMINA TIO2 NANOPARTICLES ENERGY CONVERSION GEL METHOD DEGRADATION DIOXIDE FILMS SIZE ADSORPTION PHOTOANODE 염료감응태양전지 유기태양전지