Third Day Poster Session, 17 June 2010 - NanoTR-VI

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Poster Session, Thursday, June 17
Theme F686 - N1123
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TiOR2R Nanofibers Produced by Electrospinning
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UAli E.DenizUP Tamer UyarP P*
PUNAM- Institute of Materials Science & Nanotechnology, Bilkent University, Ankara 06800, Turkey
Abstract-TiOR2R nanofibers having anatase structure are obtained by using electrospinning technique and its morphology and structure are
analyzed by SEM, EDX, and XRD.
Electrospinning is a versatile and cost-effective
technique to produce multi-functional nanofibers from
various polymers, sol-gels, metaloxides, ceramics, etc [1].
Electrospun nanofibers have several remarkable
characteristics such as large surface area, nano range pore
sizes and unique physical and mechanical properties.
These superior properties and multi-functionality of these
nanofibers enable them to be used in many areas including
biotechnology, textiles, filtration, environment and energy
[2].
Various polymeric nanofibers are produced to be used in
fuel cells and solar cells [3,4]. By electrospinning
technique, not only polymeric nanofibers are created but
also inorganic nanofibers can also be obtained. Moreover,
these metaloxide nanofibers are very important for energy
applications, for instance, TiOR2R nanofibers can be used is
used in solar cell applications [5,6].
In this study we produced TiOR2R nanofibers by
electrospinning technique. Titanium dioxide (TiOR2R)
nanofibers were obtained by electrospinning of the sol-gel
solution, which contains TiOR2R sol precursor (Titanium
(IV)-isopropoxide), polyvinylpyrrolidone (PVP), and
solvent (glacial acetic acid and ethanol). PVP nanofibers
which include Titanium (IV)-isopropoxide were calcined
at 500 °C for 3 h. After calcination, organic part (polymer,
PVP) was totally removed and TiOR2R nanofibers having
anatase structure were obtained. The diameter of the TiOR2R
fibers was in the range of 40 nm to 600 nm.
*Corresponding author: HTuyar@unam.bilkent.edu.trT
[1] Chronakis I-S, 2005 Novel nanocomposites and nanoceramics
based on polymer nanofibers using electrospinning process,
Journal of Materials Processing Technolog, 167:283-29 [2]
Greiner A., Wendorff J-H., 2007 Electrospinning: A Fascinating
Method for the Preparation of Ultrathin Fibers, Angew Chem Int
Ed.,46:5670–5703
[3] Chen Y., Guo J., Kim H.,2010 Preparation of poly(vinylidene
fluoride) / phosphotungstic acid composite nanofiber membranes
by electrospinning for proton conductivity, Reactive and
Functional Polymers, 70:69-74
[4] Chou C., Huang J., Wu C., Lee C., and Lin C.,2009
Lengthening the polymer solidification time to improve the
performance of polymer/ ZnO nanorod hybrid solar cells, Solar
Energy Materials and Solar Cells, 93:1608-1612
[5] Stathatos E., Chen Y., Dionysiou D-D., 2008 Quasi-solidstate
dye-sensitized solar cells employing nanocrystalline TiOR2
Rfilms made at low temperature, Solar Energy Materials and
Solar Cells, 92:1358-1365 [6] Mane R-S., Hwang Y-H.,
Lokhande C-D., Sartale S-D., and Han S., 2005 Room
temperature synthesis of compact TiOR2R thin films for 3-D solar
cells by chemical arrested route, Applied Surface Science,
246:271-278
a) b)
Figure 1. a) SEM Image of PVP nanofibers before calcination b)
SEM Image of TiOR2R nanofibers after calcinations.
a) b)
Figure 2. a) EDX Image of TiOR2 Rnanofibers b) Chemical Map
Image of TiOR2R nanofibers. Ti is coloured as a blue colour
TAs a conclusion, in this study we have succeeded to
produce TTiOR2R nanofibers having anatase structure by
electrospinning technique.T The morphology of the TTiOR2R
nanofibersT was examined by Scanning Electron
Microscope (SEM)T. The structural Tcharacterization was
performed by using TEnergy dispersive X-ray analysis
(EDX) and X-Ray Diffraction (XRD).
6th Nanoscience and Nanotechnology Conference, zmir, 2010 757