Synthesis and photocatalytic activity of titania pillared clays

被引:52
作者
Kaneko, T
Shimotsuma, H
Kajikawa, M
Hatamachi, T
Kodama, T
Kitayama, Y [1 ]
机构
[1] Niigata Univ, Fac Engn, Dept Chem & Chem Engn, Niigata 9502181, Japan
[2] Niigata Univ, Grad Sch Sci & Technol, Niigata 9502181, Japan
关键词
TiO2-pillared clays; mica; saponite; montmorillonite; synthesis; photocatalytic activity;
D O I
10.1023/A:1013165014982
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
TiO2-pillared clays such as montmorillonite, saponite and mica were prepared with an intercalation of polynuclear titanium complex formed by the reaction of Ti(i-C3H7O)(4) and acetic acid. Characterization of the products was performed by XRD, XPS, IR, UV-V spectra, the measurement of surface area and pore size distribution. The photocatalytic decomposition of carboxylic acids has been studied on TiO2-pillared montmorillonite, saponite and mica. TiO2-pillared mica showed higher catalytic activity than TiO2 for the photocatalytic decomposition of acetic acid and adipic acid. On the contrarily, TiO2 was the most active catalyst and TiO2-pillared mica showed low activity for the photocatalytic decomposition of capric acid. The results show that the molecular size of carboxylic acid contributes to the catalytic activity of TiO2-pillared clays.
引用
收藏
页码:295 / 301
页数:7
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