Microstructure and formation mechanism of titanium dioxide nanotubes

被引：295

作者：

Wang, YQ

Hu, GQ

Duan, XF

Sun, HL

Xue, QK

机构：

[1] Chinese Acad Sci, Inst Phys, Beijing Lab Electron Microscopy, Beijing 100080, Peoples R China

[2] Univ Bristol, HH Wills Phys Lab, Bristol BS8 1TL, Avon, England

[3] Natl Lab Surface Sci, Inst Phys, Beijing 100080, Peoples R China

来源：

CHEMICAL PHYSICS LETTERS | 2002年 / 365卷 / 5-6期

关键词：

D O I：

10.1016/S0009-2614(02)01502-6

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Titanium dioxide nanotubes are synthesized using sol-gel method. Electron energy-loss spectroscopy has been used to investigate the chemical composition of the nanotubes. The results show that the atomic ratio of O/Ti is very close to two. Electron diffraction studies indicate that the nanotubes have the anatase structure. High-resolution transmission electron microscopy studies show that the nanotubes possess a layered structure with layer spacing of about 7.1 Angstrom. The tube axis is determined to be along [010] direction of the anatase phase. The formation mechanism of the nanotubes can be explained as 3D --> 2D --> 1D. The two-dimensional lamellar TiO2 is essential for the formation of the nanotubes. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：427 / 431

页数：5

共 18 条

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