Universität zu Köln

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:	Creators Email ORCID ORCID Put Code Sekhar, Praveen K. UNSPECIFIED UNSPECIFIED UNSPECIFIED Ludwig, Tim UNSPECIFIED UNSPECIFIED UNSPECIFIED Wilhelm, Michael UNSPECIFIED UNSPECIFIED UNSPECIFIED Graf, David UNSPECIFIED orcid.org/0000-0002-0504-8527 UNSPECIFIED Riheen, Manjurul Ahsan UNSPECIFIED UNSPECIFIED UNSPECIFIED Mathur, Sanjay UNSPECIFIED UNSPECIFIED UNSPECIFIED
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:	Keywords Language GAS SENSORS; ETHYLENE; NANOPARTICLES; LIQUID; GROWTH Multiple languages Electrochemistry; Materials Science, Coatings & Films Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/13014