Sekhar, Praveen K., Ludwig, Tim, Wilhelm, Michael, Graf, David ORCID: 0000-0002-0504-8527, Riheen, Manjurul Ahsan and Mathur, Sanjay (2019). Potentiometric Ethene Sensor for Postharvest Detection Applications. J. Electrochem. Soc., 166 (15). S. B1477 - 6. PENNINGTON: ELECTROCHEMICAL SOC INC. ISSN 1945-7111

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Abstract

A sensitive and selective electrochemical sensor for the detection of ethene is reported. Reduced Graphene Oxide (rGO)-Copper (Cu) nanocomposite modified Lanthanum Strontium Chromite (LSC) and Pt are used as electrodes. Yttria-Stabilized Zirconia (YSZ) is used as the solid electrolyte. This bilayer electrochemical sensor was suitable for the detection of up to 10 parts per billion (ppb) of ethene that is of significant interest for post-harvest monitoring applications. The mixed potential sensor responded non-linearly to varying concentrations of Ethene (0 to 100 ppb). A 30% reduction in ethene sensor response was observed when the relative humidity was increased to 80% (from 10%). The optimal operating temperature of the sensor was found to be 500 degrees C considering the sensitivity-response time trade-off. The device exhibited a strong interference rejection potential to NH3 and CO. The next generation of such a mixed potential sensor with integrated heaters and miniaturized implementation will enable the possibility of ethene sensor commercialization similar to the automotive oxygen sensor. (C) 2019 The Electrochemical Society.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Sekhar, Praveen K.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ludwig, TimUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wilhelm, MichaelUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Graf, DavidUNSPECIFIEDorcid.org/0000-0002-0504-8527UNSPECIFIED
Riheen, Manjurul AhsanUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Mathur, SanjayUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-130146
DOI: 10.1149/2.0501915jes
Journal or Publication Title: J. Electrochem. Soc.
Volume: 166
Number: 15
Page Range: S. B1477 - 6
Date: 2019
Publisher: ELECTROCHEMICAL SOC INC
Place of Publication: PENNINGTON
ISSN: 1945-7111
Language: English
Faculty: Faculty of Mathematics and Natural Sciences
Divisions: Faculty of Mathematics and Natural Sciences > Department of Chemistry > Institute of Inorganic Chemistry
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
GAS SENSORS; ETHYLENE; NANOPARTICLES; LIQUID; GROWTHMultiple languages
Electrochemistry; Materials Science, Coatings & FilmsMultiple languages
Refereed: Yes
URI: http://kups.ub.uni-koeln.de/id/eprint/13014

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