A mixed-potential-type NO2 sensor based on a layered-structure Bi2W2O9 sensing electrode

Lianlian Wu; Jinfeng Xia; Jian Wu; Qiang Li

doi:10.1007/s11581-015-1510-3

A mixed-potential-type NO₂ sensor based on a layered-structure Bi₂W₂O₉ sensing electrode

Lianlian Wu
, Jinfeng Xia
, Jian Wu
, Qiang Li^*

^*Corresponding author for this work

School of Chemistry and Molecular Engineering

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

18 Scopus citations

Abstract

Layered-structure Bi₂W₂O₉ powders synthesized by conventional solid-state reaction and treated by ball milling have been used to create an electrode for a mixed-potential-type NO₂ sensor with yttria-stabilized zirconia as an oxygen ion conductor. This sensor was found to provide good sensitivity to NO₂ at 500 °C, thanks to the grain refinement induced by ball milling. The electromotive force generated was linear to the logarithm of NO₂ concentration in the range of 30–500 ppm, with analysis of the impedance spectroscopy revealing a similar linear correlation between the conductance of the electrode and the logarithm of NO₂ concentration. The influence of CO₂ was also examined and found to have little effect on the sensitivity of the sensor.

Original language	English
Pages (from-to)	3239-3244
Number of pages	6
Journal	Ionics
Volume	21
Issue number	12
DOIs	https://doi.org/10.1007/s11581-015-1510-3
State	Published - 1 Dec 2015

Keywords

BiWO
Layered structure
NO sensor
Yttria-stabilized zirconia (YSZ)

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10.1007/s11581-015-1510-3

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title = "A mixed-potential-type NO2 sensor based on a layered-structure Bi2W2O9 sensing electrode",

abstract = "Layered-structure Bi2W2O9 powders synthesized by conventional solid-state reaction and treated by ball milling have been used to create an electrode for a mixed-potential-type NO2 sensor with yttria-stabilized zirconia as an oxygen ion conductor. This sensor was found to provide good sensitivity to NO2 at 500 °C, thanks to the grain refinement induced by ball milling. The electromotive force generated was linear to the logarithm of NO2 concentration in the range of 30–500 ppm, with analysis of the impedance spectroscopy revealing a similar linear correlation between the conductance of the electrode and the logarithm of NO2 concentration. The influence of CO2 was also examined and found to have little effect on the sensitivity of the sensor.",

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doi = "10.1007/s11581-015-1510-3",

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T1 - A mixed-potential-type NO2 sensor based on a layered-structure Bi2W2O9 sensing electrode

AU - Wu, Lianlian

AU - Xia, Jinfeng

AU - Wu, Jian

AU - Li, Qiang

PY - 2015/12/1

Y1 - 2015/12/1

N2 - Layered-structure Bi2W2O9 powders synthesized by conventional solid-state reaction and treated by ball milling have been used to create an electrode for a mixed-potential-type NO2 sensor with yttria-stabilized zirconia as an oxygen ion conductor. This sensor was found to provide good sensitivity to NO2 at 500 °C, thanks to the grain refinement induced by ball milling. The electromotive force generated was linear to the logarithm of NO2 concentration in the range of 30–500 ppm, with analysis of the impedance spectroscopy revealing a similar linear correlation between the conductance of the electrode and the logarithm of NO2 concentration. The influence of CO2 was also examined and found to have little effect on the sensitivity of the sensor.

AB - Layered-structure Bi2W2O9 powders synthesized by conventional solid-state reaction and treated by ball milling have been used to create an electrode for a mixed-potential-type NO2 sensor with yttria-stabilized zirconia as an oxygen ion conductor. This sensor was found to provide good sensitivity to NO2 at 500 °C, thanks to the grain refinement induced by ball milling. The electromotive force generated was linear to the logarithm of NO2 concentration in the range of 30–500 ppm, with analysis of the impedance spectroscopy revealing a similar linear correlation between the conductance of the electrode and the logarithm of NO2 concentration. The influence of CO2 was also examined and found to have little effect on the sensitivity of the sensor.

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KW - Yttria-stabilized zirconia (YSZ)

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DO - 10.1007/s11581-015-1510-3

M3 - 文章

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ER -

A mixed-potential-type NO₂ sensor based on a layered-structure Bi₂W₂O₉ sensing electrode

Abstract

Keywords

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