A Water Vapor Sensor Application of Sn1-xFexO2-δ Fibers. Issue 1805 (11th September 2015)

• Record Type: Journal Article
• Authors: Rodríguez, Juan Manuel; Watson, Amanda; Abrego, Ildeman; Ardisson, José Domingos; Samudio, Carlos Ariel; Ching-Prado, Eleicer Antonio
• Editors: Augustynski, J.; Grosse, F.; Kumar, D.; Sanchez, F.; Santato, C.; Sun, X.W.; Vomiero, A.; Yamamoto, T.
• Is Part Of: MRS proceedings. Issue 1805(2015)
• Publication Date: 2015-09-11
• Subjects: nanoscale, -- ceramic, -- coating; Electrical engineering -- Congresses; Physics -- Congresses; Materials -- Research -- Congresses; Materials science -- Congresses; 620.11
• DOI: 10.1557/opl.2015.788
• Languages: English
• ISSNs: 0272-9172

Abstract

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-x Fex O2-δ ) with x (molar %) = 0, 2, 4, 6, 8 and 10 were prepared by the electrospinning technique. Anhydrous SnCl4, FeCl3· 6H2 O, 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 500 o 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.