Authors: Wu, Ming-Chung; Tóth, Geza; Sápi, András; Leino, Anne-Riikka; Kónya, Zoltán; Kukovecz, Ákos; Su, Wei-Fang; Kordás, Krisztián

Source: Journal of Nanoscience and Nanotechnology, Volume 12, Number 2, February 2012 , pp. 1421-1424(4)

Publisher: American Scientific Publishers

Abstract:

Titanium dioxide nanofibers were synthesized and applied in flexible composite films that are easy to handle and recycle after use. The nanofibers were obtained in a multi-step procedure. First, sodium titanate nanofibers were prepared from TiO₂ nanoparticles through the alkali hydrothermal method. In the next step, sodium hydrogen titanate nanofibers were made by washing the sodium titanate nanofibers in HCl solution. Finally, the sodium hydrogen titanate nanofibers were transformed to TiO₂ anatase nanofibers by calcination in air. The photocatalytic activity of TiO₂ anatase nanofibers were evaluated and compared to a TiO₂ nanoparticle catalyst by decomposing methyl orange dye in aqueous solutions. The achieved reaction rate constant of TiO₂ anatase nanofibers was comparable to that of Degussa P25. Paper-like flexible composite films were prepared by co-filtrating aqueous dispersions of TiO₂ catalyst materials and cellulose. The composite films made from the nanofibers exhibit better mechanical integrity than those of the nanoparticle-cellulose composites.

Keywords: TIO2; NANOFIBER; NANOWIRE; NANOPARTICLE; FLEXIBLE FILM; PHOTOCATALYST

Document Type: Research article

DOI: http://dx.doi.org/10.1166/jnn.2012.4655

Publication date: 2012-02-01

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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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