Tin oxide micro/nano fibers from electrostatic deposition

Y. Wangª^,*, M, Aponte^b,**, N. León^b, I. Ramos^b, R. Furlan^b, N. Pinto^b and J.J. Santiago–Avilésª

ª Dept of Electrical & Systems Engineering, Univ of Pennsylvania, Philadelphia, PA 19104, USA. * Current address: Dept of Electrical and Computer Engineering, Univ of California, Davis, CA, 95616.

^b Dept of Physics & Electronics, Univ of Puerto Rico at Humacao, CUH Station, Humacao, PR 00791. **Current address: Dept of Materials and Ceramics Engineering, Rutgers Univ, NJ, USA.

Recibido el 27 de octubre de 2004
Aceptado el 26 de mayo de 2005

Abstract

SnO₂ micro/nano fibers in the rutile structure were synthesized using electrospinning and metallorganic decomposition techniques. Fibers were electrospun using two different precursor solutions, one based on SnCl₄ and the other on C₂₂H₄₄O₄Sn. The fibers were sintered in air for two hours at 400, 500, 600, 700 and 800°C. SEM, AFM, XRD, XPS and Raman microspectrometry were used to characterize the sintered fibers. The results showed that the fibers were composed of SnO₂ and that the SnCl₄ precursor led to better results in terms of uniformity/continuity of the fibers.

Keywords: Tin oxide; nanofibers; electrospinning.

Resumen

Micro/nano fibras SnO₂ de rutilo se sintetizaron con electrospinning y técnicas de descomposición metalo–orgánicas. Las fibras se produjeron utilizando dos soluciones precursoras distintas basadas en una mezcla de SnCl₄ y otra de C₂₂H₄₄O₄Sn. Las fibras se quemaron en aire por dos horas a temperaturas de 400, 500, 600, 700 y 800° C y se analizaron utilizando SEM, AFM, XRD, XPS y microscopía Raman. Los resultados muestran que las fibras producidas con ambos precursores están compuestas de SnO₂ y que la solución precursora con SnCl₄ produce fibras más uniformes y continuas.

Descriptores: Óxido de estaño; nanofibras; electrospinning.

PACS: 81.16.Be; 81.15.Pq; 61.82.Fk

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Acknowledgements

This work was supported by NSF–DMR–353730 and NSF–SBE–0123654.

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