Promoting selectivity and sensitivity for a high temperature YSZ-based electrochemical total NO  sensor by using a Pt-loaded zeolite Y filter

Yang, Jing-Tang; Dutta, Prabir K.

doi:10.1016/j.snb.2007.01.028

Cited by 49 publications

(42 citation statements)

References 30 publications

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“…The example of such a design reported by Yang and Dutta is presented in Fig. 1d [80]. In this case, the total value of emf for the integral sensor is obtained by multiplying each emf value by the number of sensors.…”

Section: Sensor Configurationmentioning

confidence: 99%

“…Yang and Dutta reported that NO x selectivity was significantly increased by the use of a gas filter placed upstream sensor cell [80]. The platinum-loaded zeolite Y (PtY) material having an excellent gas-phase catalytic activity was used as a filter to promote oxidation of interference gases (e.g., CO, propane, and NH 3 ), meanwhile WO 3 was used as an SE material due to its poor catalytic activity against the gas-phase reactions involving NO x .…”

Section: No X Sensormentioning

confidence: 99%

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

Miura

Sato

Anggraini

et al. 2014

Ionics

301

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: Sensor Configurationmentioning

confidence: 99%

Section: No X Sensormentioning

confidence: 99%

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

Miura

Sato

Anggraini

et al. 2014

Ionics

301

175

View full text Add to dashboard Cite

show abstract

“…There are also electrochemical sensors that can measure total NO x [2][3][4][5]. Nitric oxide is typically emitted from high temperature combustion processes, but in the ambient it is rapidly converted to NO 2 .…”

Section: Introductionmentioning

confidence: 99%

Building Selectivity for NO Sensing in a NOx Mixture with Sonochemically Prepared CuO Structures

Mullen

Dutta

2015

Chemosensors

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Several technologies are available for decreasing nitrogen oxide (NOx) emissions from combustion sources, including selective catalytic reduction methods. In this process, ammonia reacts with nitric oxide (NO) and nitrogen dioxide (NO 2 ). As the stoichiometry of the two reactions is different, electrochemical sensor systems that can distinguish between NO and NO 2 in a mixture of these two gases are of interest. Since NO and NO 2 can be brought to equilibrium, depending on the temperature and the surfaces that they are in contact with, the detection of NO and NO 2 independently is a difficult problem and has not been solved to date. In this study, we explore a high surface area sonochemically prepared CuO as the resistive sensing medium. CuO is a poor catalyst for NOx equilibration, and requires temperatures of 500˝C to bring about equilibration. Thus, at 300˝C, NO and NO 2 retain their levels after interaction with CuO surface. In addition, NO adsorbs more strongly on the CuO over NO 2 . Using these two concepts, we can detect NO with minimal interference from NO 2 , if the latter gas concentration does not exceed 20% in a NOx mixture over a range of 100-800 ppm. Since this range constitutes most of the range of total NOx concentrations in diesel and other lean burn engines, this sensor should find application in selective detection of NO in this combustion application. A limitation of this sensor is the interference with CO, but with combustion in excess air, this problem should be alleviated.

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“…This effect can be corrected for if the oxygen content is known, but the presence of oxygen decreases the magnitude of the sensor response, which may reduce the signal-to-noise ratio of the sensor output. One approach to improving selectivity is to use a porous zeolite on the electrode [168,281,341,342]. In addition to using the controlled porosity to preferentially control the relative diffusion rates of different species, the zeolite can be loaded with catalysts to promote the desired chemical reaction.…”

Section: Log [Co] (Ppm)mentioning

confidence: 99%

Electrochemical Sensors: Fundamentals, Key Materials, and Applications

Fergus

2009

Solid State Electrochemistry I

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Solid electrolytes are well suited for use in chemical sensors for high-temperature applications. The first such sensors followed from the use of solid electrolytes for thermodynamic measurements, and are based on galvanic cells, for which the open circuit voltage is related to the concentration of the mobile ionic species, or to another target species through equilibration at the electrode surface. However, sensors can also be based on nonequilibrium, but steady-state, potentials established between electrochemical reactions at the electrode. Another approach is to use the current passing through the electrolyte, rather than the voltage across the electrolyte, as the sensor signal. In this chapter we first describe the different methods for using solid electrolytes in chemical sensors, and then discuss some of the materials challenges and example applications. IntroductionMore than 50 years ago, Kiukkola and Wagner [1] demonstrated that solid electrolytes couldbeusedingalvaniccellstomeasurethethermodynamicpropertiesofoxides.Those pioneering studies subsequently led to the more practical application of solid electrolytes in chemical sensors. The ionic conduction in solid electrolytes is thermally activated and thus its rate increases with increasing temperature; consequently, solid electrolytes are well suited for high-temperature applications. On the other hand, such temperature dependencealsomeansthatsensorsbasedonsolidelectrolytescanrespondsluggishlyor may be inoperable at low temperatures. However, one of the advantages of solid-state devices, such as those based on solid electrolytes, is that they can be miniaturized [2,3]. Decreasingthedevicedimensionsreducesdiffusionlengths,whichinturndecreasesthe response time and thus also the minimum operating temperature.Ionic conducting solids can be used in a variety of different types of sensor [4][5][6][7][8][9][10][11][12]. Solids forwhichthe ionicconductivity is much largerthanthe electronic conductivity can Solid State Electrochemistry I: Fundamentals, Materials and their Applications. Edited by Vladislav V. Kharton

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Promoting selectivity and sensitivity for a high temperature YSZ-based electrochemical total NO sensor by using a Pt-loaded zeolite Y filter

Cited by 49 publications

References 30 publications

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

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

Building Selectivity for NO Sensing in a NOx Mixture with Sonochemically Prepared CuO Structures

Electrochemical Sensors: Fundamentals, Key Materials, and Applications

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