A Room Temperature Polyaniline/SnO2 Nanofiber Composite Based Layered ZnO/64Â° YX LiNbO3 SAW Hydrogen Gas Sensor

Author

Sadek, A.Z. ; Wlodarski, Wojtek ; Shin, Koo ; Kaner, Richard B. ; Kalantar-zadeh, Kourosh

Author_Institution

RMIT Univ., Melbourne

fYear

2006

fDate

6-8 Dec. 2006

Firstpage

208

Lastpage

211

Abstract

Polyaniline/SnO₂ nanoflber based surface acoustic wave (SAW) gas sensor has been investigated towards hydrogen (H₂) gas. Chemical oxidative polymerization of aniline was employed to synthesize polyaniline nanofibers with SnO₂ nanoparticles. The nanocomposite was deposited onto a layered ZnO/64deg YX LiNbO₃ SAW transducer. The sensor was exposed to various concentrations of H₂ gas and operated at room temperature. The sensor response was found to be 7 kHz towards 1% of H₂ in synthetic air. A fast response and recovery with good repeatability in a stable baseline condition were observed at room temperature.

Keywords

gas sensors; hydrogen; lithium compounds; niobium compounds; oxygen compounds; surface acoustic wave transducers; tin compounds; H₂; LiNbO₃; SnO₂; ZnO; chemical oxidative polymerization; frequency 7 kHz; hydrogen gas; nanofiber composite; polyaniline nanofibers synthesis; room temperature polyaniline; surface acoustic wave gas sensor; surface acoustic wave transducer; temperature 293 K to 298 K; Acoustic waves; Chemicals; Gas detectors; Hydrogen; Nanoparticles; Polymers; Surface acoustic waves; Temperature sensors; Transducers; Zinc oxide; Composite; Gas sensor; H2; Polyaniline nanofiber; SnO2;

fLanguage

English

Publisher

ieee

Conference_Titel

Optoelectronic and Microelectronic Materials and Devices, 2006 Conference on

Conference_Location

Perth, WA

Print_ISBN

978-1-4244-0578-7

Electronic_ISBN

978-1-4244-0578-7

Type

conf

DOI

10.1109/COMMAD.2006.4429917

Filename

4429917