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.

fYear

2006

fDate

3-7 July 2006

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ICONN.2006.340718

Filename

4143498