Synthesis of thermally stable mesoporous TiO2 and investigation of its photocatalytic activity

被引：64

作者：

Yuan, Shuai ^{[1
,2
,3
]}

Sheng, Qiaorong ^{[1
,2
]}

Zhang, Jinlong ^{[1
,2
]}

Yamashita, Hiromi ^{[4
]}

He, Dannong ^{[5
]}

机构：

[1] E China Univ Sci & Technol, Adv Mat Lab, Shanghai 200237, Peoples R China

[2] E China Univ Sci & Technol, Inst Fine Chem, Shanghai 200237, Peoples R China

[3] Shanghai Univ, Res Ctr Nanosci & Nanotechnol, Shanghai 200444, Peoples R China

[4] Osaka Univ, Grad Sch Engn, Div Mat & Mfg Sci, Suita, Osaka 5650871, Japan

[5] Shanghai Natl Engn Res Ctr Nanotechnol, Shanghai 200237, Peoples R China

来源：

MICROPOROUS AND MESOPOROUS MATERIALS | 2008年 / 110卷 / 2-3期

关键词：

mesoporous TiO2; dopant; thermal stability; photocatalytic activity;

D O I：

10.1016/j.micromeso.2007.06.039

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The effects of heat treatment, dopant type and thickness of sol layer, on the formation and stability of ordered TiO2 mesostructure were investigated. Higher ageing temperature facilitates the separation of organic phase and inorganic phase, while thinner sol layer facilitates the formation of homogeneous system and improves the mesostructural order of TiO2. Lanthanurn dopant, which is more electropositive than Ti, can improve the thermal stability of mesostructure by enhancing the strength of Ti-O bond. On the contrary, Fe and Pd dopants, which are more electronegative than Ti, decrease the thermal stability of mesostructure. Furthermore, La doped mesoporous TiO2 shows high activity in the photocatalytic degradation of Rhodamine B under the irradiation of visible light. (C) 2007 Elsevier Inc. All rights reserved.

引用

页码：501 / 507

页数：7

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