Preparation and structure analysis of titanium oxide nanotubes
Top Cited Papers
- 16 November 2001
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 79 (22), 3702-3704
- https://doi.org/10.1063/1.1423403
Abstract
Well crystallized nanoscale tubular materials have been synthesized via the reaction of crystals of either anatase or rutile phase and NaOH aqueous solution. The atomic structure of the synthesized tubular material is imaged by high-resolution transmission electron microscopy (HRTEM), and the composition of individual tubular structures is determined using selected area energy dispersive X-ray spectroscopy (EDX). Our results show that the tubular materials are well crystallized tubes with an average diameter of about 9 nm and little dispersion, and are composed of mainly titanium and oxygen. The atomic ratio of O/Ti is found, however, to vary from tube to tube. Detailed electron and x-ray diffraction studies show that the structure of our titanium oxide nanotubes do not agree with those made of crystals with either anatase or rutile phase. HRTEM observations revealed that the titanium oxide nanotubes usually have multiple shells, in analogy with multiwalled carbon nanotubes, but the shell spacing is about 0.75 nm which is much larger than that of the carbon nanotube, and the atomic structures of different shells are well correlated.
Keywords
This publication has 21 references indexed in Scilit:
- Formation of Titania Nanotubes with High Photo-Catalytic ActivityChemistry Letters, 2000
- Low-Cost Synthesis of Vanadium Oxide Nanotubes via Two Novel Non-Alkoxide RoutesChemistry of Materials, 2000
- Sol−Gel Synthesis and Hydrothermal Processing of Anatase and Rutile Titania NanocrystalsChemistry of Materials, 1999
- Direct preparation of anatase TiO2 nanotubes in porous alumina membranesJournal of Materials Chemistry, 1999
- Sol−Gel Template Synthesis of Semiconductor Oxide Micro- and NanostructuresChemistry of Materials, 1997
- Semiconductor nanotube formation by a two‐step template processAdvanced Materials, 1996
- Mesoporous phases based on SnO2 and TiO2Chemical Communications, 1996
- Synthesis of nanotubulesPhysical Review B, 1995
- Polyhedral and cylindrical structures of tungsten disulphideNature, 1992
- Helical microtubules of graphitic carbonNature, 1991