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Growth of Nanograins in TiO2 Nanofibers Synthesized by Electrospinning

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Abstract:

Present study focuses the effect of calcination temperature and its duration on the morphology and growth of nanograins in individual TiO2 nanofibers synthesized by electrospinning method. Polyvinyl acetate and titanium tetraisopropoxide were used as chemical precursors along with other standard solvents in the synthesis process. This study shows that synthesized TiO2 nanofibers are randomly arranged and spreads uniformly over the Si substrate and possess polycrystalline nature consisting of nanograins. Similar to the sintering behavior generally observed in bulk ceramics, the nanograins coalesce and grow under higher calcination temperature and longer calcination time. The activation energy for the growth of nanograins is found to be 47.2 kJ/mol. The dominant growth mechanism changes depending on the stages of calcination.

Keywords: ACTIVATION ENERGY; GRAIN GROWTH; NANOFIBER; TIO2

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/jnn.2010.2264

Publication date: May 1, 2010

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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