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Proceedings Paper

Electrospun tin oxide nanofibers
Author(s): Neliza León; Glendalys Figueroa; Yu Wang; Idalia Ramos; Rogerio Furlan; Nicholas Pinto; Jorge J. Santiago-Avilés
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Paper Abstract

Ultrafine tin oxide (SnO2) fibers in the rutile structure, with diameters ranging from 60nm to several microns, were synthesized using electrospinning and metallorganic decomposition techniques. In this work we use a precursor solution which is a mixture of a pure SnO2 sol made from SnCl4 : H2O : C3H7OH : 2-C3H7OH at a molar ratio of 1:9:9:6, and a viscous solution made from poly(ethylene oxide) (PEO) (molecular weight 900,000) and chloroform CHCl3 at a ratio of 200mg PEO/10mL CHCl3. This solution allows obtaining an appropriate viscosity for the electrospinning process. The as deposited fibers were sintered at 400, 500, 600, 700 and 800°C in air for two hours. Previous results using this method and characterizing the fibers with scanning electron microscopy (SEM), x-ray diffraction (XRD), Raman microspectrometry and x-ray photoelectron spectroscopy (XPS) showed that up to the sintering temperature of 700°C, the synthesized fibers are composed of SnO2. Further analysis using SEM, Profilometry, Atomic Force Microscopy (SPM), Auger Spectroscopy and I/V analysis is presented in this paper. The results show that the fibers are composed of tin oxide and that smooth and continuous fibers in different shapes (straight, curved, ribbon-like, and spring-like) can be obtained using this method. The change in resistivity as a function of the annealing temperature can be attributed to the thermally activated formation of a nearly stoichoimetric solid.

Paper Details

Date Published: 28 June 2005
PDF: 8 pages
Proc. SPIE 5838, Nanotechnology II, (28 June 2005); doi: 10.1117/12.607257
Show Author Affiliations
Neliza León, Univ. of Puerto Rico at Humacao (United States)
Glendalys Figueroa, Univ. of Puerto Rico at Humacao (United States)
Yu Wang, Univ. of California, Davis (United States)
Idalia Ramos, Univ. of Puerto Rico at Humacao (United States)
Rogerio Furlan, Univ. of Puerto Rico at Humacao (United States)
Nicholas Pinto, Univ. of Puerto Rico at Humacao (United States)
Jorge J. Santiago-Avilés, Univ. of Pennsylvania (United States)


Published in SPIE Proceedings Vol. 5838:
Nanotechnology II
Paolo Lugli; Laszlo B. Kish; Javier Mateos, Editor(s)

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