Journal ArticleDOI
Preparation and structure analysis of titanium oxide nanotubes
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In this paper, 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).Abstract:
Well crystallized nanoscale tubular materials have been synthesized via the reaction of TiO2 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 TiO2 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 spacin...read more
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Modulation strategies in titania photocatalyst for energy recovery and environmental remediation
TL;DR: In this article , the state-of-the-art strategies and their basics to improve the photocatalytic activity of TiO2 in two aspects: (i) environmental remediation, and (ii) energy conversion.
Journal ArticleDOI
Formation of Trititanate Nanotubes by Non-Hydrothermal Methods: Optical Properties and Surface-Exciton Dynamics Studied by Photoluminescence Spectroscopy
TL;DR: Trititanate (H2Ti3O7) nanotubes were prepared by a non-hydrothermal digestion of TiO(OH)2 solution with 5 M NaOH, and their optical properties and exciton dynamics were studied by using steady-state and time-resolved photoluminescence (PL) spectroscopy as discussed by the authors.
Journal ArticleDOI
Formation and Bioactivity of SrTiO3 Nanotubes on Titanium by Modified Anodization and Hydrothermal Treatment
Zhang Yanni,Han Yong,Zhang Lan +2 more
TL;DR: In this article, a hybrid approach with a modified anodization and a hydrothermal treatment (HT) was used for the fabrication of the SrTiO 3 nanotubes for orthopedic application.
Journal ArticleDOI
TiO2 (Anatase) films nanotubes
G. S. Zakharova,G. S. Zakharova +1 more
TL;DR: Anatase titanium dioxide nanotubes were prepared by hydrothermal synthesis with subsequent annealing in a nitrogen atmosphere as mentioned in this paper, and the structural transformation of polytitanic acid to TiO2, which preserves the tubular morphology until 500°C, was studied by X-ray powder diffraction and thermal analyses, scanning and transmission electron microscopies, and IR and Raman spectroscopies.
Journal ArticleDOI
Role of the residual Na+ ions on the dispersion of WOx species on titania nanotubes by in situ thermo-Raman study
M.A. Cortes-Jacome,J.A. Toledo-Antonio,Carlos Angeles-Chavez,Esteban López-Salinas,G. Ferrat,José Escobar,J.A. Montoya de la Fuente +6 more
TL;DR: Titania nanotubes synthesized by alkali hydrothermal method were used to support 5-20 W.% of WO x by wet impregnation method as discussed by the authors.
References
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Journal ArticleDOI
Helical microtubules of graphitic carbon
TL;DR: Iijima et al. as mentioned in this paper reported the preparation of a new type of finite carbon structure consisting of needle-like tubes, which were produced using an arc-discharge evaporation method similar to that used for fullerene synthesis.
Journal ArticleDOI
Room-temperature transistor based on a single carbon nanotube
TL;DR: In this paper, the fabrication of a three-terminal switching device at the level of a single molecule represents an important step towards molecular electronics and has attracted much interest, particularly because it could lead to new miniaturization strategies in the electronics and computer industry.
Book
Physical properties of carbon nanotubes
TL;DR: In this paper, an introductory textbook for graduate students and researchers from various fields of science who wish to learn about carbon nanotubes is presented, focusing on the basic principles behind the physical properties and giving the background necessary to understand the recent developments.
Book
Science of fullerenes and carbon nanotubes
TL;DR: In this paper, the authors present a detailed overview of the properties of Fullerenes and their properties in surface science applications, such as scanning tunnel microscopy, growth and fragmentation studies, and chemical synthesis.
Journal ArticleDOI
Boron Nitride Nanotubes
Nasreen G. Chopra,R. J. Luyken,K. Cherrey,Vincent H. Crespi,Marvin L. Cohen,Steven G. Louie,Alex Zettl +6 more
TL;DR: Electron energy-loss spectroscopy on individual tubes yielded B:N ratios of approximately 1, which is consistent with theoretical predictions of stable BN tube structures.