| Abstract
| - Titanate nanowires were synthesized through the hydrothermal synthesis route (10 M NaOH, 130 °C)from anatase in a rotating autoclave. A combined TEM, SEM, XRD, FT−Raman, and N2 adsorptioninvestigation of the reaction products as a function of time revealed that the 60−150 nm wide and ∼5μm long nanowires are in fact formed by the merging of self-assembled nanotube bundles. The nanowiresare able to further self-assemble into ∼5 μm wide and longer than 30 μm long, dense “superbundles” ifthe reaction is allowed to run long enough. We propose that the spontaneous nanotube arrangementcould be caused by the rotation-assisted oriented attachment of the tubes.
- Titanate nanowires can be prepared with a hydrothermal reaction at a temperature considerably lower than the previously accepted limit if the synthesis autoclave is rotated. Nanowires are formed in situ from titanate nanotubes with an oriented attachment mechanism.
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