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Synthesis of Mesoporous TiO2 and Its Application to Photocatalytic Activation of Methylene Blue and E. coli

Title
Synthesis of Mesoporous TiO2 and Its Application to Photocatalytic Activation of Methylene Blue and E. coli
Authors
Kim, Eun-YoungKim, Dong SukAhn, Byung Tae
Ewha Authors
안병태
SCOPUS Author ID
안병태scopusscopus
Issue Date
2009
Journal Title
BULLETIN OF THE KOREAN CHEMICAL SOCIETY
ISSN
0253-2964JCR Link
Citation
vol. 30, no. 1, pp. 193 - 196
Keywords
SynthesisMesoporous TiO2Photocatalytic degradationInactivationE. coli
Publisher
KOREAN CHEMICAL SOC
Indexed
SCI; SCIE; SCOPUS; KCI WOS scopus
Abstract
Mesoporous TiO2 material was synthesized from diblock copolymers with ethylene oxide chains via a sol-gel process in aqueous Solution. The properties of these materials were characterized with several analytical techniques including field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), wide angle X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET) analysis, and Barrett-Joyner-Halenda (BJH) analysis. The mesoporous TiO2 materials calcined at 400 degrees C were found to have specific surface areas 212 m(2) g(-1), average pore sizes 6.2 nm, and their average crystal sizes were found to be 8.2 nm. The photocatalytic activity of mesoporous TiO2 was characterized with UV-Vis spectroscopy, and it was found to be 5.8 times higher than that of Degussa P25 TiO2 (P25). For deactivation of Escherichia coli, mesoporous TiO2 also has high photocatalytic inactivity than that of P25. Such a high photocatalytic activity is explained with large surface area and small crystal size with wormhole-like mesoporous structure.
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자연과학대학 > 화학·나노과학전공 > Journal papers
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