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Electrospun Tungsten Oxide Nanofibers: Fabrication and Characterization

Published online by Cambridge University Press:  01 February 2011

Guan Wang ,
Xianrong Huang ,
Xiaoqing Yang ,
Pelagia-Irene Gouma  and
Michael Dudley
Guan Wang
Affiliation:
[email protected], Stony Brook University, Materials Science and Engineering, Rm311, Old Engi Bldg, Department of Materials Science and Engineering, Stony Brook University, Stony Brook, NY, 11790, United States, 631-632-8501
Xianrong Huang
Affiliation:
[email protected], Stony Brook University, Materials Science and Engineering, Stony Brook, NY, 11790, United States
Xiaoqing Yang
Affiliation:
[email protected], Brookhaven National Lab, Upton, NY, 11973, United States
Pelagia-Irene Gouma
Affiliation:
[email protected], Stony Brook University, Materials Science and Engineering, Stony Brook, NY, 11790, United States
Michael Dudley
Affiliation:
[email protected], Stony Brook University, Materials Science and Engineering, Stony Brook, NY, 11790, United States
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Abstract

Tungsten oxide nanofibers have been successfully fabricated in a way based on electrospinning technique. A DMF solution of Poly(Vinyl Acetate)(PVAc, Mw=500,000) was mixed with tungsten isopropoxide to form a viscous precursor solution. Composite nanofibers were obtained by electrspinning this viscous solution. By calcination of the composite fibers, pure tungsten oxide nanofibers were obtained with controllable diameters of around 100 nm. Morphology of the fibers has been characterized by SEM and TEM. The relationship between solution concentration and ceramic nanofiber morphology has been studied. The detailed structure evolution process has been investigated by synchrotron based in-situ XRD. Specific phases of the oxide nanofibers at various calcination temperatures have been obtained from the in-situ XRD spectrum.

Keywords

nanostructureoxidex-ray diffraction (XRD)
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 915: Symposium R – Nanostructured Materials and Hybrid Composites for Gas Sensors and Biomedical Applications , 2006 , 0915-R06-15
Copyright
Copyright © Materials Research Society 2006

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