Title :
PSSA Doped Polyaniline Nanofiber Based ZnO/64/spl deg/ YX LiNbO/sub 3/ SAW H/sub 2/ Gas Sensor
Author :
Sadek, A.Z. ; Kalantar-zadeh, K. ; Wlodarski, W. ; Baker, C. ; Kaner, R.B.
Author_Institution :
Sch. of Electr. & Comput. Eng., RMIT Univ., Melbourne, Vic.
Abstract :
A polyaniline (PANI) nanofiber based surface acoustic wave (SAW) gas sensor, has been developed and investigated towards hydrogen (H2) gas. A template-free, rapidly-mixed reaction approach was employed to synthesize polyaniline nanofibers, which utilized chemical oxidative polymerization of aniline. Hydrochloric acid (HCl) was used as the dopant acid in the synthesis of the polyaniline nanofibers. Polystyrene sulfonic acid (PSSA) was used to re-dope PANI nanofibers after dialyzing with ammonium hydroxide. Then PSSA doped nanofibers were deposited onto a ZnO/64 YX LiNbO3 SAW transducer. The sensor was exposed to various concentrations of H2 gas in an ambient of synthetic air, and operated at room temperature.
Keywords :
ammonia; gas sensors; hydrogen compounds; lithium compounds; niobium compounds; polymerisation; surface acoustic wave sensors; zinc compounds; HCl; LiNbO3; PSSA doped polyaniline nanofiber; ZnO; ammonium hydroxide; aniline; chemical oxidative polymerization; gas sensor; hydrochloric acid; hydrogen gas; polystyrene sulfonic acid; surface acoustic wave; Conductivity; Doping; Gas detectors; Hydrogen; Polymers; Surface acoustic wave devices; Surface acoustic waves; Surface morphology; Temperature sensors; Zinc oxide;
Conference_Titel :
Nanoscience and Nanotechnology, 2006. ICONN '06. International Conference on
Conference_Location :
Brisbane, Qld.
Print_ISBN :
1-4244-0452-5
Electronic_ISBN :
1-4244-0452-5
DOI :
10.1109/ICONN.2006.340718
