De-NOx reactor and NOx sensor using In3+-doped SnP2O7 with PtRhBa/C electrode

Nagao, Masahiro; Yoshii, Takeshi; Namekata, Yousuke; Teranishi, Shinya; Sano, Mitsuru; Tomita, Atsuko; Hibino, Takashi

doi:10.1016/j.ssi.2008.03.033

Cited by 5 publications

(2 citation statements)

References 9 publications

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“…For HC detection, he used proton conductor-containing platinum electrodes [47]. After a long period working on single-chamber solid oxide fuel cells [18], he comes back to NOx sensors with special electrode materials, which have been developed for SOFC [48].…”

Section: State Of the Artmentioning

confidence: 99%

Development of Planar Potentiometric Gas Sensors for Automotive Exhaust Application

Pijolat

Viricelle

2012

Springer Series on Chemical Sensors and Biosensors

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In the past, we have deeply investigated the development of a b-alumina potentiometric sensor with two coplanar metallic electrodes. Recently, many papers have demonstrated an interest for similar non-Nernstian devices based on stabilised zirconia (YSZ) electrolyte. The common particularity of such sensors is related to the use a dissymmetry of electrodes on an electrolyte and to work in a single gas cell. Our main experimental results obtained with b-alumina sensors are reported with the special attention to develop gas sensors for exhaust applications. The sensors are evaluated under CO, HC and NO x CO. The selectivity depends on the sensor temperatures. The performances appear sufficient to satisfy in the future automotive applications like the control of NOxTrap or DeNOx devices. The measure of NH 3 concentrations seems also possible. The comparison of performances of sensors replacing b-alumina electrolyte by YSZ is also presented. Similar behaviours are obtained for both types of sensors. These comparisons reinforce our proposal of a capacitive model mainly based on the difference of reactivity of the electrodes. It is pointed out that mixed potentials cannot explain the behaviour of our sensors under oxygen. Very good agreements are obtained between this capacitive model and the experimental results, not only versus oxygen, but also with mixture of oxygen and CO.

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Section: State Of the Artmentioning

confidence: 99%

Development of Planar Potentiometric Gas Sensors for Automotive Exhaust Application

Pijolat

Viricelle

2012

Springer Series on Chemical Sensors and Biosensors

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show abstract

“…Thus, it is necessary to fabricate a high-performance gas sensor which can rapidly, precisely and reliably detect low concentration of NO 2 in the air. Several types of gas sensors (electrochemical, optical and resistive) have been extensively applied for real-time NO 2 sensing [5][6][7][8][9][10]. However, gas sensors based on metal oxide semiconductors (MOSs) have low production costs as well as high sensitivity and selectivity towards desired gases and hence gained a lot of interest in environmental pollution monitoring [11].…”

Section: Introductionmentioning

confidence: 99%

Nitrogen dioxide gas-sensing properties of hydrothermally synthesized WO ₃ · nH ₂ O nanostructures

Hambir

Jagtap

2023

R. Soc. open sci.

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Nitrogen dioxide (NO 2 ) has been identified as a serious air pollutant that threats to our environment, human life and world ecosystems. Therefore, detection of this air pollutant is crucial. Metal oxide semiconductor is one of the best approaches frequently used to detect NO 2 at relatively low temperatures. Hydrated tungsten trioxide (WO 3 · H 2 O), an n-type semiconductor, is regarded to be a promising material for fabricating gas sensors, which are widely used in environmental and safety monitoring. In this work, WO 3 · nH 2 O nanoparticles have been synthesized using a polyfunctional surfactant-mediated hydrothermal approach in the addition of H 2 C 2 O 4 and K 2 SO 4 at a molar ratio of 1 : 1. This paper has also reported the effect of reaction temperature (120°C to 200°C) on morphological changes and gas-sensing performance. The characterization of these synthesized nanostructures was carried out by UV–Vis absorption spectroscopy, X-ray diffraction and field-emission scanning electron microscopy (FESEM). The UV absorption peak was obtained around 300 nm. FESEM analysis showed sheet-like structures come together to form flower-type morphology. The synthesized WO 3 · nH 2 O flower-like structures was then used for NO 2 gas-sensing application. The prepared sensors showed considerably better sensor response ( R g / R a = 17.48) at 185°C for 25 ppm NO 2 .

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Low-temperature and highly enhanced NO2 sensing performance of Au-functionalized WO3 microspheres with a hierarchical nanostructure

Shen

et al. 2018

Applied Surface Science

109

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De-NOx reactor and NOx sensor using In3+-doped SnP2O7 with PtRhBa/C electrode

Cited by 5 publications

References 9 publications

Development of Planar Potentiometric Gas Sensors for Automotive Exhaust Application

Development of Planar Potentiometric Gas Sensors for Automotive Exhaust Application

Nitrogen dioxide gas-sensing properties of hydrothermally synthesized WO ₃ · nH ₂ O nanostructures

Low-temperature and highly enhanced NO2 sensing performance of Au-functionalized WO3 microspheres with a hierarchical nanostructure

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De-NOx reactor and NOx sensor using In3+-doped SnP2O7 with PtRhBa/C electrode

Cited by 5 publications

References 9 publications

Development of Planar Potentiometric Gas Sensors for Automotive Exhaust Application

Development of Planar Potentiometric Gas Sensors for Automotive Exhaust Application

Nitrogen dioxide gas-sensing properties of hydrothermally synthesized WO 3 · nH 2 O nanostructures

Low-temperature and highly enhanced NO2 sensing performance of Au-functionalized WO3 microspheres with a hierarchical nanostructure

Contact Info

Product

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Nitrogen dioxide gas-sensing properties of hydrothermally synthesized WO ₃ · nH ₂ O nanostructures