Title :
A Room Temperature Polyaniline/SnO2 Nanofiber Composite Based Layered ZnO/64° 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
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;
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
DOI :
10.1109/COMMAD.2006.4429917
