Polyaniline nanofiber based surface acoustic wave gas sensors - Effect of nanofiber diameter on H-2 ... - مرکز و کتابخانه مطالعات اسلامی به زبان های اروپایی

مرکز و کتابخانه مطالعات اسلامی به زبان های اروپایی

منو

" Polyaniline nanofiber based surface acoustic wave gas sensors - Effect of nanofiber diameter on H-2 response "
Sadek, A Z; Baker, Christina Opimo; Powell, D A; Wlodarski, W; Kaner, R B; Kalantar-zadeh, K

Document Type	:	AL
Record Number	:	910950
Doc. No	:	LA7rm9m2hf
Title & Author	:	Polyaniline nanofiber based surface acoustic wave gas sensors - Effect of nanofiber diameter on H-2 response [Article]\ Sadek, A Z; Baker, Christina Opimo; Powell, D A; Wlodarski, W; Kaner, R B; Kalantar-zadeh, K
Date	:	2007
Title of Periodical	:	UCLA
Abstract	:	A template-free rapidly mixed reaction was employed to synthesize polyaniline nanofibers using chemical oxidative polymerization of aniline. Hydrochloric acid (HCl) and camphor sulfonic acid (CSA) were used in the synthesis to obtain 30- and 50-nm average diameter polyaniline nanofibers. The nanofibers were deposited onto layered ZnO/64 degrees YX LiNbO3 surface-acoustic-wave transducers. The sensors were tested toward hydrogen (H-2) gas while operating at room temperature. The dopant for the polyaniline nanofiber synthesis was found to have a significant effect on the device sensitivity. The sensor response was found to be larger for the 50-nmdiameter CSA-doped nanofiber based sensors, while the response and recovery times were faster for the 30-nm diameter HCl-doped nanofibers.