Publication Date:
2011-07-01
Description:
Sensing characteristics of amperometric NOx sensor using yttria-stabilized zirconia (YSZ) and La-based perovskite-type oxide sensing-electrode (SE) was examined. La 0.8 Sr 0.2 MO 3 (M = Co, Mn, Fe) and LaMnO 3 was synthesized by means of spray pyrolysis method. The sensor attached with La 0.8 Sr 0.2 MnO 3 as a SE showed the highest occupancy rate of NO 2 response in total current as well as low current response to CO, C 3 H 6 , NH 3 at 600°C in O 2 (21%). The response was increased with increasing NO 2 concentration in the examined range between 50 to 800 ppm. The comparison of sensing property between LaMnO 3 -SE and La 0.8 Sr 0.2 MnO 3 -SE showed the substitution Sr for La improved the NO 2 response for the sensors.
Print ISSN:
1757-8981
Electronic ISSN:
1757-899X
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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