Preparation of the xerogels of nanocrystalline titanias by the removal of the glycol at the reaction temperature after the glycothermal method and their enhanced photocatalytic activities

被引：29

作者：

Iwamoto, S

Saito, K

Inoue, M

Kagawa, K

机构：

[1] Kyoto Univ, Grad Sch Engn, Dept Energy & Hydrocarbon Chem, Kyoto 6068501, Japan

[2] Kansai Elect Power Co Inc, Amagasaki, Hyogo 6610974, Japan

来源：

NANO LETTERS | 2001年 / 1卷 / 08期

关键词：

D O I：

10.1021/nl010025b

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Xerogels consisting of nanocrystalline silica-modified titanias were obtained by the reaction of titanium tetraisopropoxide and tetraethyl orthosilicate in 1,4-butanediol at 300 degreesC for 2 h in an autoclave, followed by the removal of the organic phase from the autoclave at the reaction temperature. The coagulation of the ultrafine particles due to the surface tension of the liquid between the particles in the drying stage was prevented, which contributes to the superior thermal stability and photocatalytic activity of the products.

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页码：417 / 421

页数：5

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