Alcohol induced liquid-phase synthesis of rutile titania nanotubes

被引：29

作者：

Yan, Jinhong ^{[1
,2
]}

Feng, Shouai ^{[1
]}

Lu, Haiqiang ^{[1
]}

Wang, Jian ^{[1
]}

Zheng, Jianfeng ^{[1
]}

Zhao, Jianghong ^{[1
]}

Li, Li ^{[1
]}

Zhu, Zhenping ^{[1
]}

机构：

[1] Chinese Acad Sci, State Key Lab Coal Convers, Inst Coal Chem, Taiyuan 030001, Shanxi, Peoples R China

[2] Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS | 2010年 / 172卷 / 02期

关键词：

Titanium dioxide; Low-temperature synthesis; Ethanol; Phase transformation; LOW-TEMPERATURE; FORMATION MECHANISM; TIO2; ANATASE; CRYSTALLIZATION; BROOKITE; PHOTOLUMINESCENCE; MICROSTRUCTURE; NANOCRYSTALS; CRYSTALS;

D O I：

10.1016/j.mseb.2010.04.032

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Pure I-utile nanotubes were synthesized by a hydrothermal process in NaOH water-ethanol solution, starting from rutile-anatase TiO2 particles. The length of nanotubes is up to several micrometers and their diameter is uniform and not more than 20 nm. Although rutile phase is the high-temperature polymorph of anatase, the phase transformation from anatase of raw materials into rutile is realized at low-temperature (130 degrees C). The chelation of ethanol to the TiO6 octahedra, which are the basic building blocks of titania and separated by the alkaline dismantling of the TiO2 starting material, may play an important role for the phase transition. The nanotube evolution follows oriented assembly route from the seeds of the initially formed short nanotubes and with TiO6 octahedra as building blocks. The types of alcohol and the ratio of ethanol and H2O have a great impact on the morphology and structure of the final products. The rutile nanotubes present different opto-electronic properties from those of the raw TiO2. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：114 / 120

页数：7

共 39 条

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