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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Aerobic Oxidation of Alcohols over Gold Catalysts: Role of Acid and Base
Søren Kegnæs Klitgaard,Andrew T. DeLa Riva,Stig Helveg,Rebecka Maria Larsen Werchmeister,Claus H. Christensen +4 more
TL;DR: Gold nanoparticles are deposited on potassium titanate nanowires and used as heterogeneous catalysts in the aerobic oxidation of benzyl alcohol in methanol to methyl benzoate at ambient conditions.
Journal ArticleDOI
Synthesis of TiO2 nanotubes coupled with CdS nanoparticles and production of hydrogen by photocatalytic water decomposition
TL;DR: In this article, a simple two-step chemical solution route was proposed to directly transfer trititanate nanotubes to TiO 2 NTs and simultaneously coupled with CdS nanoparticles.
Journal ArticleDOI
Impact of Hydrothermal Processing Conditions on High Aspect Ratio Titanate Nanostructures
TL;DR: In this article, high aspect ratio TiOx nanostructures were produced by simple hydrothermal treatment and the nature of two distinct morphologies, compact nanofibers and hollow nanotubes, was explored as a function of preparation conditions.
Journal ArticleDOI
In situ thermo-Raman study of titanium oxide nanotubes
M.A. Cortés-Jácome,G. Ferrat-Torres,L.F. Flores Ortiz,Carlos Angeles-Chavez,Esteban López-Salinas,José Escobar,M.L. Mosqueira,J.A. Toledo-Antonio +7 more
TL;DR: Titania nanotubes were obtained by alkaline hydrothermal treatment of anatase powder at 100°C followed by washing with an HCl aqueous solution as mentioned in this paper.
Journal ArticleDOI
Decontamination of 2-chloroethyl ethylsulfide using titanate nanoscrolls
Alfred Kleinhammes,George W. Wagner,Harsha Kulkarni,Yuanyuan Jia,Qi Zhang,Lu Chang Qin,Yue Wu +6 more
TL;DR: Titanate nanoscrolls, a recently discovered variant of TiO2 nanocrystals, are tested as reactive sorbent for chemical warfare agent (CWA) decontamination as mentioned in this paper.
References
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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.
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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.
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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.