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A Water Vapor Sensor Application of Sn1-xFexO2-δ Fibers

Published online by Cambridge University Press:  11 September 2015

Juan Manuel Rodríguez ,
Amanda Watson ,
Ildeman Abrego ,
José Domingos Ardisson ,
Carlos Ariel Samudio  and
Eleicer Antonio Ching-Prado
Juan Manuel Rodríguez
Affiliation:
Technological University of Panama, Natural Science Department, Panama City, Panama
Amanda Watson
Affiliation:
Technological University of Panama, Natural Science Department, Panama City, Panama
Ildeman Abrego
Affiliation:
Technological University of Panama, Natural Science Department, Panama City, Panama
José Domingos Ardisson
Affiliation:
Federal University of Minas Gerais, Development Center of Nuclear Technology Department, Bello Horizonte, Minas Gerais, Brazil
Carlos Ariel Samudio
Affiliation:
University of Passo Fundo, Geological Department, Rio Grande, Brasil.
Eleicer Antonio Ching-Prado*
Affiliation:
Technological University of Panama, Natural Science Department, Panama City, Panama
*
*Email to: eleicer.ching@utp.ac.pa
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Abstract

Tin oxide is of great interest due to their potential technological applications, such as: gas sensors, energy conversion, catalysts and others. Appropriate doping can further enhance the conductivity of the SnO2 material with little loss of transparency. Isolated tin iron oxide fibers (Sn1-xFexO2-δ) with x (molar %) = 0, 2, 4, 6, 8 and 10 were prepared by the electrospinning technique. Anhydrous SnCl4, FeCl3·6H2O, different alcohols, chloroform and a polymer (PEO) were used as precursor materials. Appropriate mixture of these reagents defines the deposition solution. The samples were deposited on glass substrates and annealed at 500o C. The fibers are characterized by scanning electron microscopy (SEM), impedance spectroscopy and temperature dependence current-voltage measurements. The fibers with diameters between 2 to 12 microns were used for sensorial purpose. Thus, water vapor sensor responses were also measured and the experimental results are tested using the Freundlich isotherms model.

Keywords

nanoscaleceramiccoating
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1805: Symposium SS/TT – Fabrication and Properties of Oxide Thin Films, Nanostructures and Interfaces for Advanced Applications , 2015 , mrss15-2132265
Copyright
Copyright © Materials Research Society 2015 

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References

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