著者

山下 浩 尾川 裕介 前川 尚

出版者

公益社団法人 日本分析化学会

雑誌

分析化学 (ISSN:05251931)

巻号頁・発行日

vol.56, no.6, pp.511-514, 2007 (Released:2007-10-04)

参考文献数

21

被引用文献数

1 4

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Spherical porous titania particles were synthesized by a sol-gel process from titanium tetraisopropoxide (TTIP) in a W/O emulsion. These particles were obtained by the addition of diethanolamine (DEA), methanol and colloidal silica particles. The molar ratio of TTIP, DEA, methanol and H2O was 1 : 1.5 : 4 : 20. Spherical titania particles could be synthesized by a stepwise increasing-temperature process. This process was carried out by stepwise emulsification at 30°C for 30 min, at 40°C for 30 min and at 50°C for 2 h. After calcination at 500°C, the SiO2 parts in the particles were extracted by a 3 M NaOH aqueous solution. The specific surface area of the particles was 362 m2 g−1. The peak pore-diameter of the particles was 6 nm.