Effect of Organic Additive on the Preparation of Rutile TiO2 by Steam Treatment |
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| Authors: | Y.G. Shul K.S. Oh J.C. Yang K.T. Jung |
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| Affiliation: | (1) Dept. of Chem. Eng., Yonsei Univ. Sinchondong, Sudaemungu, 120-749 Seoul, Korea |
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| Abstract: | Low temperature phase transformation of alkoxide-derived titania was studied under an oxygen flow containing water vapor. The addition of hexylene glycol to the titanium alkoxide solution was effective in transforming rutile phase at low temperature (300°C). Hexylene glycol seems to form a bidentate ligand structure with TEOT in solution state. This bidentate structure promoted the rutile phase at low temperature, under O2-steam treatment. This modification of TiO2 gel structure could be monitored by FT-IR and XANES. |
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| Keywords: | TiO2 hexylene glycol O2-steam treatment phase transition bidentate structure |
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