Preparation of Self-Standing, Submillimeter-Thick Porous Titania Films with Anatase Nanocrystallites Using Evaporation-Induced Self-Assembly |
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Authors: | Hui-suk Yun Haoshen Zhou Itaru Honma |
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Affiliation: | (1) Department of Future Technology, Korea Institute of Machinery & Materials, 66 Sangnam-dong, Changwon-si, Gyeongnam, 641-831, Korea;(2) Energy Technology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 2, 1-1-1 Umezono, Tsukuba, Ibaraki 305-8568, Japan |
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Abstract: | Self-standing transparent submillimeter-thick (∼0.34 mm) mesoporous titania films were prepared using the evaporation-induced self-assembly (EISA) of a triblock copolymer template and titanium tetraethoxide. Performing EISA at low temperature and low humidity improved the transparency and continuity of the films. As synthesized films had a well-defined hexagonal mesostructure and the existence of both amorphous titania and anatase nanocrystallites (2 nm) was confirmed. The films that were calcined at 400°C were composed of anatase nanocrystallites (14–16 nm) and had a BET surface area of 90 m2 g−1 with 13-nm pores. The films were characterized using XRD, FE-SEM, TEM, and N2 adsorption–desorption measurements. An erratum to this article can be found at |
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Keywords: | self-assembling films submillimeter-thick mesoporous titania evaporation-induced self-assembly. |
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