Microionic gas sensor for pollution and energy control in the consumer market

Pribat, Didier; Velasco, G.

doi:10.1016/0250-6874(88)80040-4

Cited by 23 publications

(3 citation statements)

References 43 publications

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“…In an oxygen rich atmospheres, HC and CO are totally converted to CO 2 and H 2 O, but when reaching high enough temperatures, air nitrogen oxidizes to NO x . Emission and efficiency optimization are close to the stoichiometric conditions and dramatically decrease on the lean side for oxides of nitrogen and on the rich side for the other carbon compounds [3,4].…”

Section: Introductionmentioning

confidence: 93%

Bi2O3 as a selective sensing material for NO detection

Cabot

Marsal

Arbiol

et al. 2004

Sensors and Actuators B: Chemical

210

112

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Section: Introductionmentioning

confidence: 93%

Bi2O3 as a selective sensing material for NO detection

Cabot

Marsal

Arbiol

et al. 2004

Sensors and Actuators B: Chemical

210

112

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“…Recently, resistive-type oxygen gas sensors [3][4][5][6][7][8] are drawing the attention again for such new applications since their structure is simpler and their size is smaller compared to conventional oxygen gas sensors using concentration cells consisting of oxygenion-conductor [7,8]. The oxygen gas sensors for automotive exhaust gas need not only small size but also fast response in order to monitor the concentration of oxygen for controlling the air to fuel ratio completely.…”

Section: Introductionmentioning

confidence: 99%

Development of Resistive Oxygen Sensors Based on Cerium Oxide Thick Film

et al. 2004

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It is important to shorten the response time of resistive oxygen sensor in order to reduce harmful emission of automobiles. The diffusion and surface reaction theory tells us that reducing particle size leads to shortening the response time. The fine ceria powder was prepared a by new precipitation method and the oxygen sensors having ceria thick film with the particle size of 120 nm were fabricated using fine ceria (cerium oxide) powder. The thick film exhibited good adhesion to alumina substrate. The value of n in R ∝ P(O 2 ) 1/n at 1073 and 1173 K were 6.2 and 6.4 in the oxygen partial pressures range from 10 −13 to 10 5 Pa, respectively. The response time for the sensor was 22 and 12 ms at 1073 and 1173 K, respectively. The sensor fabricated in this study showed fast response.

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“…Many studies have been devoted to developing oxygen gas sensors for various applications such as exhaust gas sensors in gasoline-powdered automobiles, medical incubators for infants, and various oxygen providers [1]. Unlike the most widely used oxygen gas sensors made of yttrium-stabilized zirconia (YSZ), which are relatively complicated in structure, difficult to reduce in size, and have fairly high operating temperature (~850 o C) [2,3], a resistive oxygen gas sensor that consists of single phase oxide has exhibited some promising features such as high oxygen-sensing capability, short response time accomplished by a reduction of the powder size to the nanometer scale, relatively low working temperature, and easy miniaturization of the sensor due to its simple sensing mechanism [3,4]. One of good candidates for such high performance oxygen gas sensors is cerium oxide (ceria, CeO 2 ) [5,6].…”

Section: Introductionmentioning

confidence: 99%

High Oxygen Sensitivity of Nanocrystalline Ceria Prepared by Thermochemical Process

Lee

Lim

et al. 2007

MSF

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Nanostructured CeO2 powder was synthesized by a thermochemical process and its applicability as an oxygen gas sensor was investigated. An amorphous precursor was prepared by spray drying a cerium-nitrate solution and then heat-treated in air to induce evaporation of volatile components from the precursor powder, which then forms nanostructured ceria. The powder produced possessed a loose agglomerated structure with extremely fine CeO2 particles about 15 nm in size, resulting in a very high specific surface area (110 m2/g). The average grain size of a specimen sintered from the ceria powder at 1000 oC was about 40 nm, and its oxygen sensitivity n (logσ log(PO2 /Po)-n) was about 1/4 at 600 oC. The response time t90, time for responding to a change of oxygen partial pressure, of the specimens sintered at 800 ~ 1100 oC was very short, i.e., 3 ~ 5 seconds: The signal output was almost identical and uniformly repeated in a stable manner.

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Microionic gas sensor for pollution and energy control in the consumer market

Cited by 23 publications

References 43 publications

Bi2O3 as a selective sensing material for NO detection

Bi2O3 as a selective sensing material for NO detection

Development of Resistive Oxygen Sensors Based on Cerium Oxide Thick Film

High Oxygen Sensitivity of Nanocrystalline Ceria Prepared by Thermochemical Process

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