Paper Title:
Hydrothermal Synthesis of Nanostructured Titania
  Abstract

Titania ceramics have many applications due to its surface properties and, recently, its nanostructured compounds, prepared by hydrothermal treatments, have been described to improve these properties. In this work, 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. The first one consisted of washing with water and ethanol and the second with water and hydrochloric acid solution (1%). Resulting powders were characterized by X-ray diffraction, N2 gas adsorption and field emission gun scanning and transmission electronic microscopy. Results showed that from an original starting material with mainly rutile phase, both anatase and H2Ti3O7 phase could be identified after the hydrothermal treatment. Surface area of powders presented a notable increase of one order of magnitude and micrographs showed a rearrangement on the microstructure of powders.

  Info
Periodical
Materials Science Forum (Volumes 660-661)
Edited by
Lucio Salgado and Francisco Ambrozio Filho
Pages
788-793
DOI
10.4028/www.scientific.net/MSF.660-661.788
Citation
W. K. Yoshito, N. A.M. Ferreira, A. C. S. C. Rumbao, D. R. R. Lazar, V. Ussui, "Hydrothermal Synthesis of Nanostructured Titania", Materials Science Forum, Vols. 660-661, pp. 788-793, 2010
Online since
October 2010
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Price
$32.00
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