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Synthesis of high aspect ratio titanate nanotubes
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Torrente-Murciano, Laura, Lapkin, Alexei and Chadwick, David. (2010) Synthesis of high aspect ratio titanate nanotubes. Journal of Materials Chemistry, Vol.20 (No.31). pp. 6484-6489. ISSN 0959-9428
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Official URL: http://dx.doi.org/10.1039/c0jm01212b
Abstract
Titanate nanotubes were synthesised using a hydrothermal method in a static and a rotating autoclave (end-over-end) over a range of rotation speeds (0-20 rpm). The control of the average length of the titanate nanotubes by the speed of rotation during their synthesis was revealed. As the rotation speed was increased, longer nanotubes (more than 1 mm at 20 rpm) were produced. This phenomenon was attributed to an increase in the mass transfer, facilitating the formation of longer intermediate titanate nanosheets. Long nanotubes self-assemble, forming secondary structures without transformation into nanowires as confirmed by the high specific surface area, pore size (inner nanotubes diameter) of 3.7 nm, XRD and Raman analyses. The initial phase of dissolution of the ends of the nanotubes was observed at higher rotation speeds. Pre-sonication treatment of the suspension of TiO2 precursor in NaOH solution resulted in a slight increase in the length of the nanotubes in the static synthesis, but did not have any effect in the rotating autoclave syntheses.
| Item Type: | Journal Article |
|---|---|
| Subjects: | Q Science > QD Chemistry T Technology > TP Chemical technology |
| Divisions: | Faculty of Science > Engineering |
| Library of Congress Subject Headings (LCSH): | Nanotubes, Titanates, Autoclaves, Semiconductors, Self-assembly (Chemistry) |
| Journal or Publication Title: | Journal of Materials Chemistry |
| Publisher: | Royal Society of Chemistry |
| ISSN: | 0959-9428 |
| Date: | August 2010 |
| Volume: | Vol.20 |
| Number: | No.31 |
| Number of Pages: | 6 |
| Page Range: | pp. 6484-6489 |
| Identification Number: | 10.1039/c0jm01212b |
| Status: | Peer Reviewed |
| Publication Status: | Published |
| Access rights to Published version: | Restricted or Subscription Access |
| Funder: | Engineering and Physical Sciences Research Council (EPSRC) |
| Grant number: | EP/F023456 (EPSRC) |
| URI: | http://wrap.warwick.ac.uk/id/eprint/5457 |
Data sourced from Thomson Reuters' Web of Knowledge
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