Isotopically labeled oxygen studies of the NOx exchange behavior of La2CuO4 to determine potentiometric sensor response mechanism

Assche, F. Martin Van; Wachsman, Eric D.

doi:10.1016/j.ssi.2008.08.014

Cited by 23 publications

(31 citation statements)

References 22 publications

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“…Alternative approach was proposed by Wachsman et al, namely "Differential Electrode Equilibria," which particularly elucidates the sensing behavior of the sensor using semiconducting oxide SE [87][88][89]. This theory also takes gas-phase reaction and electrochemical reaction into account, when explaining the sensing mechanism.…”

Section: Sensing Mechanismmentioning

confidence: 99%

A review of mixed-potential type zirconia-based gas sensors

Miura

Sato

Anggraini

et al. 2014

Ionics

293

175

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A robust and reliable gas sensing device is considered as a convenient and practical solution for gas concentration monitoring that has become a mandatory requirement in different field of applications. For in situ hazardous gases detection, a mixed-potential type gas sensor has been regarded as a promising solid-state gas sensor. For the past three decades, there has been a significant progress in achieving high performance in mixed-potential type sensors. Therefore, this review is focused on reporting the development of mixedpotential type gas sensors with combined yttria-stabilized zirconia (YSZ) as the base solid electrolyte material and various classes of electrode materials for their potential utilization as a high-performance sensing electrode. The underlying sensing mechanism of a mixed-potential type YSZ-based sensor is elaborated here in detail. Transformation in design and configuration of this type of sensor is also covered in this report. In addition, recent progresses on mixed-potential type gas sensors development for detection of several target gases, such as carbon monoxide, hydrocarbons, nitrogen oxides, hydrogen, and ammonia, are reviewed. Strategies to improve the sensing characteristic, particularly gas sensitivity and selectivity, are also reported. Based on the understanding of the fundamental sensing mechanism and the requirements for high-performance gas sensors, challenges and future trends for this type of gas sensor development are discussed.

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Section: Sensing Mechanismmentioning

confidence: 99%

A review of mixed-potential type zirconia-based gas sensors

Miura

Sato

Anggraini

et al. 2014

Ionics

293

175

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“…In particular, the presence of copper in these phases (e.g. CuO, La 2 CuO 4 , Nd 2 CuO 4−y , Cu-containing zeolites) promotes the formation of nitrate adducts upon interaction with NO x gases [44][45][46][47]. In the case of Cu-containing phases, the formation of nitrates has been linked to a loss in chemical reactivity toward the catalytic decomposition of NO x gases at high temperatures, which is consistent with the sensitivity loss observed at 500 °C [46,47].…”

Section: °Cmentioning

confidence: 99%

Copper tungstate thin-films for nitric oxide sensing

Gonzalez

Dunford

et al. 2012

Sensors and Actuators B: Chemical

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/npsi/ctrl?lang=en http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?lang=fr Access and use of this website and the material on it are subject to the Terms and Conditions set forth at http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=en NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur. For the publisher's version, please access the DOI link below./ Pour consulter la version de l'éditeur, utilisez le lien DOI ci-dessous.http://dx.doi.org/10.1016/j.snb.2012.06.067 Sensors and Actuators B: Chemical, 173, pp. 169-176, 2012-07-08 Copper tungstate thin-films for nitric oxide sensing Gonzalez, C. M.; Du, X.; Dunford, J. L.; Post, M. L.

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“…In addition, the composition of the NO x adsorbates on La 2 CuO 4 and the mechanism of oxygen exchange between NO x and La 2 CuO 4 have been studied extensively using Infrared/X-ray Photoemission Spectroscopy [16] and TPR/TPD experiments with isotopically labeled O 2 [17], respectively. NO sensitivity was attributed to NO adsorption and the associated change of potential with respect to the Fermi Energy level at the surface.…”

Section: Sensor Mechanismmentioning

confidence: 99%

La2CuO4 sensing electrode configuration influence on sensitivity and selectivity for a multifunctional potentiometric gas sensor

Macam

White

Blackburn

et al. 2011

Sensors and Actuators B: Chemical

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a b s t r a c tThe effects of electrical contact configuration for La 2 CuO 4 sensing electrodes for a planar-based potentiometric gas sensor were studied in order to further quantify the effects of processing on sensor performance. Five configurations of La 2 CuO 4 were used for the sensing electrode. The La 2 CuO 4 sensing electrode was screen printed opposite a Pt counter electrode on a tape cast YSZ electrolyte. Three sensors were prepared for each configuration to test repeatability. Each sensor was tested at temperatures from 400 to 700• C at various concentrations of NO 2 , NO, and CO in an environment of 3% O 2 with a balance of N 2 . Results show that these sensors exhibit suitable sensitivity to all the gases tested. More importantly, it was shown that the sensitivity, selectivity/cross-sensitivity, and repeatability of these sensors are dependent on the sensing electrode configuration.

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Isotopically labeled oxygen studies of the NOx exchange behavior of La2CuO4 to determine potentiometric sensor response mechanism

Cited by 23 publications

References 22 publications

A review of mixed-potential type zirconia-based gas sensors

A review of mixed-potential type zirconia-based gas sensors

Copper tungstate thin-films for nitric oxide sensing

La2CuO4 sensing electrode configuration influence on sensitivity and selectivity for a multifunctional potentiometric gas sensor

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