"nO-selective" NOx sensing elements for combustion exhausts

David L. West; Fred C. Montgomery; Timothy R. Armstrong

doi:10.1016/j.snb.2005.06.043

"nO-selective" NO_x sensing elements for combustion exhausts

David L. West, Fred C. Montgomery, Timothy R. Armstrong

Research output: Contribution to journal › Article › peer-review

28 Scopus citations

Abstract

Fabrication and characterization of NO_x sensing elements using co-planar oxide and Pt electrodes is described. The sensing elements, based on yttria-stabilized zirconia substrates, could be current-biased to a "NO-selective" sensing condition (for NO_x in the concentration range 50-1500 ppm_V) if the oxide was an alkaline earth-modified lanthanum chromite. Simple variations in electrode geometry (interdigitation of the electrodes or increase of the oxide electrode surface area relative to the Pt electrode) did not affect the magnitude of the NO response or the recovery from exposure to NO. The main effects of temperature appeared to be a decrease in the response magnitude with increasing T and an increase of the recovery time (from NO exposure) with decreasing T.

Original language	English
Pages (from-to)	84-90
Number of pages	7
Journal	Sensors and Actuators, B: Chemical
Volume	111-112
Issue number	SUPPL.
DOIs	https://doi.org/10.1016/j.snb.2005.06.043
State	Published - Nov 11 2005

Keywords

Gas sensor
NO sensor
Nitric oxide

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10.1016/j.snb.2005.06.043

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abstract = "Fabrication and characterization of NOx sensing elements using co-planar oxide and Pt electrodes is described. The sensing elements, based on yttria-stabilized zirconia substrates, could be current-biased to a {"}NO-selective{"} sensing condition (for NOx in the concentration range 50-1500 ppmV) if the oxide was an alkaline earth-modified lanthanum chromite. Simple variations in electrode geometry (interdigitation of the electrodes or increase of the oxide electrode surface area relative to the Pt electrode) did not affect the magnitude of the NO response or the recovery from exposure to NO. The main effects of temperature appeared to be a decrease in the response magnitude with increasing T and an increase of the recovery time (from NO exposure) with decreasing T.",

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AU - West, David L.

AU - Montgomery, Fred C.

AU - Armstrong, Timothy R.

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N2 - Fabrication and characterization of NOx sensing elements using co-planar oxide and Pt electrodes is described. The sensing elements, based on yttria-stabilized zirconia substrates, could be current-biased to a "NO-selective" sensing condition (for NOx in the concentration range 50-1500 ppmV) if the oxide was an alkaline earth-modified lanthanum chromite. Simple variations in electrode geometry (interdigitation of the electrodes or increase of the oxide electrode surface area relative to the Pt electrode) did not affect the magnitude of the NO response or the recovery from exposure to NO. The main effects of temperature appeared to be a decrease in the response magnitude with increasing T and an increase of the recovery time (from NO exposure) with decreasing T.

AB - Fabrication and characterization of NOx sensing elements using co-planar oxide and Pt electrodes is described. The sensing elements, based on yttria-stabilized zirconia substrates, could be current-biased to a "NO-selective" sensing condition (for NOx in the concentration range 50-1500 ppmV) if the oxide was an alkaline earth-modified lanthanum chromite. Simple variations in electrode geometry (interdigitation of the electrodes or increase of the oxide electrode surface area relative to the Pt electrode) did not affect the magnitude of the NO response or the recovery from exposure to NO. The main effects of temperature appeared to be a decrease in the response magnitude with increasing T and an increase of the recovery time (from NO exposure) with decreasing T.

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KW - NO sensor

KW - Nitric oxide

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IS - SUPPL.

ER -

"nO-selective" NO_x sensing elements for combustion exhausts

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Keywords

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