Porous TiO sub(2) nanostructures synthesized from peroxotitanic acid-derived anatase

Titania/titanate nanotubes and nanoplates were prepared by an alkali hydrothermal method using the powder and the sol of peroxotitanic acid-derived anatase, respectively, as precursors. XRD patterns and Raman spectra showed that both nanotubes and nanoplates are of titanate structure with the latter...

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Bibliographic Details
Published inJournal of porous materials Vol. 18; no. 4; pp. 435 - 441
Main Authors Peng, W Q, Liu, Y-J, Aizawa, M, Wang, Z-M, Hatori, H, Hirotsu, T
Format Journal Article
LanguageEnglish
Published 01.08.2011
Subjects
Anatase
Nanocomposites
Nanomaterials
Nanorods
Nanostructure
Nanotubes
Precursors
Titanium dioxide
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Summary:Titania/titanate nanotubes and nanoplates were prepared by an alkali hydrothermal method using the powder and the sol of peroxotitanic acid-derived anatase, respectively, as precursors. XRD patterns and Raman spectra showed that both nanotubes and nanoplates are of titanate structure with the latter involving a slight part of anatase phase. These nanotubes and nanoplates are highly mesoporous based on nitrogen adsorption measurement. After calcination at 823 K, nanotubes were transformed into nanorods, and nanoplates into spherical particles, both of which are pure anatase-type titania. The nanorod material exhibits an enhanced photocatalytic activity in comparison with the spherical particles. Graphical Abstract: FE-SEM images of nanotubes (left) and nanoplates (right) prepared using the powder and the sol of peroxotitanic acid-derived anatase as precursors, respectively.
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ISSN:1380-2224
1573-4854
DOI:10.1007/s10934-010-9395-z