期刊
JOURNAL OF NANOPARTICLE RESEARCH
卷 13, 期 8, 页码 3259-3265出版社
SPRINGER
DOI: 10.1007/s11051-011-0240-3
关键词
Titanate nanostructures; Vibrational spectroscopies; X-ray diffraction; Electron microscopy; One-dimensional nanostructures
资金
- CNPq [CNPq 620238/2008-9, 306335/2007-7]
- CAPES [CAPES 068/2007]
- FUNCAP
- FAPEPI
- FAPESP
Titanate nanorods, nanoribbons, and nanofibers synthesized by hydrothermal treatment are being investigated by several groups. Similar to titanate nanotubes, with average diameter of 9 nm, there is a strong controversy regarding the composition and microscopic formation mechanism of these non-hollow nanostructures (nanoribbons). In this article, we report the synthesis and characterization of the titanate nanostructures by exploiting some aspects that were not exploited so far. By using X-ray diffraction, FT-infrared and Raman spectroscopies and electron microscopy, we have studied the intermediate structure and morphology between nanotubes and the non-hollow nanostructures. Our findings give further evidence that the transformation of nanotubes into non-hollow nanostructures is induced by a sequence of both oriented attachment and Ostwald rippening cooperative mechanisms.
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