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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Patent
Materiau d'oxyde de titane nanostructure et procede d'obtention associe
Antonio José Antonio Toledo,Chavez Carlos Angeles,Jacome Maria Antonia Cortes,Ramirez Fernando Alvarez,Morales Yosadara Ruiz,Torres Gerardo Ferrat,Ortiz Luis Francisco Flores,Salinas Esteban Lopez,Y Cassou Marcelo Lozada +8 more
TL;DR: The presente invencion se relaciona con materiales nanoestructurados de oxido de titanio (TiO2-x, donde 0 = x = 1), que tienen una estructura cristalina ortorrombica no conocida hasta ahora as mentioned in this paper.
Journal ArticleDOI
Photocatalytic reforming of formic acid with simultaneous hydrogen production under visible light over CdS sensitized Na 2 Ti 2 O 4 (OH) 2
TL;DR: In this paper, an anaerobic photocatalytic reforming of formic acid over CdS sensitized Na 2 Ti 2 O 4 (OH) 2 nanotubes was reported.
Patent
Tubular titanium oxide particles and use of the same
TL;DR: In this article, the compositional formula for tubular titanium oxide particles is described and photovoltaic cells and photocatalysts containing tubular dioxide particles are also disclosed.
Journal ArticleDOI
Hydrothermal Synthesis of Nanostructured Titania
Walter Kenji Yoshito,Nildemar A.M. Ferreira,Ana Carolina S. Coutinho Rumbao,Dolores Ribeiro Ricci Lazar,Valter Ussui +4 more
TL;DR: In this paper, commercial titanium dioxide was treated with 10% sodium hydroxide solution in a pressurized reactor at 150°C for 24 hours under vigorous stirring and then washed following two different procedures.
Journal ArticleDOI
Synthesis of CuO Microspheres by the Simple Hydrothermal Method and their Optical Absorption Properties
TL;DR: The phase, morphologies and optical absorption properties of the samples have been characterized and analyzed by XRD (X-ray diffraction), SEM (Scanning electron microscope) and ultraviolet-visible absorption spectroscopy (UV-VIS), respectively 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.