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Fabrication of SWNTs/α-Fe2O3 as room-temperature LPG sensor
Author(s)
Chaitongrat, Buaworn
Date Issued
December 31, 2015
Type
Conference Paper
Abstract
A simple fabrication of liquid petroleum gas sensor based on SWNTs/α-Fe2O3 nanocomposite films is reported. SWNTs/α-Fe2O3 films were successfully synthesized through the vertical floating catalyst chemical vapor deposition method using ferrocene-ethanol mist, followed by annealing in air at 350 oC to create α-Fe2O3. To fabricate a sensor, carbon conductive electrodes were directly deposited on top of the SWNTs/α-Fe2O3 films. SWNTs/α-Fe2O3 growth conditions (deposition time and ferrocene/ethanol ratio) were optimized to improve sensor response. The sensor had the capability to detect LPG at a concentration as low as 0.2% LEL (lower explosive limit), indicating possible applications in LPG monitoring at room temperature.
Citation
2015 IEEE Sensors Proceedings, 2015