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Mixed-potential-type NO2 sensors based on stabilized zirconia and CeO2-B2O3 (B = Fe, Cr) binary nanocomposites sensing electrodes.

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Title: Mixed-potential-type NO2 sensors based on stabilized zirconia and CeO2-B2O3 (B = Fe, Cr) binary nanocomposites sensing electrodes.
Authors: You, Rui1, Wang, Tianshuang2, Yu, Hongyan1, Wang, Jing2, Lu, Geyu2, Liu, Fangmeng2 liufangmeng@jlu.edu.cn, Cui, Tianhong3 tcui@me.umn.edu
Source: Sensors & Actuators B: Chemical. Aug2018, Vol. 266, p793-804. 12p.
Subjects: Zirconium oxide, Electrodes, Nanocomposite materials, Gas detectors, Oxides
Abstract: Mixed-potential type (MPT) NO 2 sensors equipped with CeO 2 -B 2 O 3 (B = Fe, Cr) sensing electrode (SE) and yttria-stabilized-zirconia (YSZ-8Y) electrolyte are fabricated. The new ceria-based nanocomposites synthesized by sol-gel method improve the NO 2 gas sensing properties significantly. The highest response to NO 2 is found for the sensor using CeO 2 -Cr 2 O 3 binary oxides with 1:1 Ce/Cr sintered at 800 °C, resulting in 100 mV to 100 ppm with relatively fast response and recovery times at the working temperature of 450 °C. A linear relation is obtained for the sensor with configuration of Pt/YSZ/CeO 2 -B 2 O 3 (B = Fe, Cr) between potential difference (ΔV) and the logarithm of the concentration of NO 2 from 5 to 200 ppm, which the sensitivities are 40.5 and 74.0 mV/decade, respectively. Additionally, the sensor’s reproducibility, selectivity, cross-sensitivity and stability are investigated in details. Furthermore, the mixed potential sensing mechanism and catalytic activity to NO 2 for ceria-based nanocomposites are also discussed. [ABSTRACT FROM AUTHOR]
Copyright of Sensors & Actuators B: Chemical is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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DbLabel: Engineering Source
An: 129095398
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  Label: Title
  Group: Ti
  Data: Mixed-potential-type NO2 sensors based on stabilized zirconia and CeO2-B2O3 (B = Fe, Cr) binary nanocomposites sensing electrodes.
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  Data: <searchLink fieldCode="AR" term="%22You%2C+Rui%22">You, Rui</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Wang%2C+Tianshuang%22">Wang, Tianshuang</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Yu%2C+Hongyan%22">Yu, Hongyan</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Wang%2C+Jing%22">Wang, Jing</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Lu%2C+Geyu%22">Lu, Geyu</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Liu%2C+Fangmeng%22">Liu, Fangmeng</searchLink><relatesTo>2</relatesTo><i> liufangmeng@jlu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Cui%2C+Tianhong%22">Cui, Tianhong</searchLink><relatesTo>3</relatesTo><i> tcui@me.umn.edu</i>
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  Data: <searchLink fieldCode="JN" term="%22Sensors+%26+Actuators+B%3A+Chemical%22">Sensors & Actuators B: Chemical</searchLink>. Aug2018, Vol. 266, p793-804. 12p.
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  Data: <searchLink fieldCode="DE" term="%22Zirconium+oxide%22">Zirconium oxide</searchLink><br /><searchLink fieldCode="DE" term="%22Electrodes%22">Electrodes</searchLink><br /><searchLink fieldCode="DE" term="%22Nanocomposite+materials%22">Nanocomposite materials</searchLink><br /><searchLink fieldCode="DE" term="%22Gas+detectors%22">Gas detectors</searchLink><br /><searchLink fieldCode="DE" term="%22Oxides%22">Oxides</searchLink>
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  Label: Abstract
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  Data: Mixed-potential type (MPT) NO 2 sensors equipped with CeO 2 -B 2 O 3 (B = Fe, Cr) sensing electrode (SE) and yttria-stabilized-zirconia (YSZ-8Y) electrolyte are fabricated. The new ceria-based nanocomposites synthesized by sol-gel method improve the NO 2 gas sensing properties significantly. The highest response to NO 2 is found for the sensor using CeO 2 -Cr 2 O 3 binary oxides with 1:1 Ce/Cr sintered at 800 °C, resulting in 100 mV to 100 ppm with relatively fast response and recovery times at the working temperature of 450 °C. A linear relation is obtained for the sensor with configuration of Pt/YSZ/CeO 2 -B 2 O 3 (B = Fe, Cr) between potential difference (ΔV) and the logarithm of the concentration of NO 2 from 5 to 200 ppm, which the sensitivities are 40.5 and 74.0 mV/decade, respectively. Additionally, the sensor’s reproducibility, selectivity, cross-sensitivity and stability are investigated in details. Furthermore, the mixed potential sensing mechanism and catalytic activity to NO 2 for ceria-based nanocomposites are also discussed. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Sensors & Actuators B: Chemical is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1016/j.snb.2018.03.140
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      – Code: eng
        Text: English
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        PageCount: 12
        StartPage: 793
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      – SubjectFull: Zirconium oxide
        Type: general
      – SubjectFull: Electrodes
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      – SubjectFull: Nanocomposite materials
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      – SubjectFull: Gas detectors
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      – SubjectFull: Oxides
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      – TitleFull: Mixed-potential-type NO2 sensors based on stabilized zirconia and CeO2-B2O3 (B = Fe, Cr) binary nanocomposites sensing electrodes.
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            NameFull: You, Rui
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            NameFull: Wang, Tianshuang
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            NameFull: Yu, Hongyan
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            NameFull: Wang, Jing
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            NameFull: Lu, Geyu
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            NameFull: Liu, Fangmeng
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            – D: 01
              M: 08
              Text: Aug2018
              Type: published
              Y: 2018
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              Value: 266
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