Nano Archive

High-Yield Preparation of Titanium Dioxide Nanostructures by Hydrothermal Conditions

Vasquez, Juan and Lozano, Harold and Lavayen, Vladimir and Lira-Cantú, Mónica and Gómez-Romero, Pedro and Santa Ana, María Angélica and Benavente, Eglantina and Gonzalez, Guillermo (2009) High-Yield Preparation of Titanium Dioxide Nanostructures by Hydrothermal Conditions. JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, 9 (2). p. 1103. ISSN 1533-4880

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The effect of the neutral surfactant dodecylamine and octadecylamine on the synthesis of TiO2-based nanostructures by the treatment of anatase with NaOH under hydrothermal conditions in the temperature range 120–150 C and different reaction times was investigated. The products analyzed by electron microscopy, X-ray diffraction, FT-IR and elemental analysis contains—depending of the amine, the temperature and the duration of the hydrothermal treatment—spherical and tubular species containing the acid H2Ti3O7. The formation of morphologically almost pure phases constituted by nanospheres and nanotubes were obtained at 130 C after about 30 and 50 h respectively. Using dodecylamine, structurally fragile tubular amine containing nanocomposites are obtained, while in the case of the octadecylamine, notoriously stable purely inorganic nanotubes are formed. The role of the amine in these reactions is discussed.

Item Type:Article
Subjects:Material Science > Nanofabrication processes and tools
ID Code:7778
Deposited By:M T V
Deposited On:23 Nov 2009 13:00
Last Modified:23 Nov 2009 13:00

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