Title :
Pt/graphene nano-sheet based hydrogen gas sensor
Author :
Shafiei, M. ; Arsat, R. ; Yu, J. ; Kalantar-zadeh, K. ; Wlodarski, W. ; Dubin, S. ; Kaner, R.B.
Author_Institution :
Sensor Technol. Lab., RMIT Univ., Melbourne, VIC, Australia
Abstract :
In this paper, we present gas sensing properties of Pt/graphene-like nano-sheets towards hydrogen gas. The graphene-like nano-sheets were produced via the reduction of spray-coated graphite oxide deposited on SiC substrates by hydrazine vapor. Structural and morphological characterizations of the graphene sheets were analyzed by scanning electron and atomic force microscopy. Current-voltage and dynamic responses of the sensors were investigated towards different concentrations of hydrogen gas in a synthetic air mixture at 100°C. A voltage shift of 100 mV was recorded at 1 mA reverse bias current.
Keywords :
dynamic response; gas sensors; graphene; nanosensors; platinum; silicon; spray coating techniques; Pt; atomic force microscopy; gas sensing properties; hydrazine vapor; hydrogen gas; nanosheet based hydrogen gas sensor; scanning electron microscopy; spray-coated graphite oxide deposition; synthetic air mixture; Atomic force microscopy; Atomic layer deposition; Force sensors; Gas detectors; Hydrogen; Propellants; Scanning electron microscopy; Sensor phenomena and characterization; Silicon carbide; Spraying;
Conference_Titel :
Sensors, 2009 IEEE
Conference_Location :
Christchurch
Print_ISBN :
978-1-4244-4548-6
Electronic_ISBN :
1930-0395
DOI :
10.1109/ICSENS.2009.5398157
