Effect of the geometry of a working electrode on the behavior of a planar amperometric NO2 sensor based on solid polymer electrolyte

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23220%2F13%3A43918347" target="_blank" >RIV/49777513:23220/13:43918347 - isvavai.cz</a>
Result on the web
<a href="http://www.sciencedirect.com/science/article/pii/S0925400513003626" target="_blank" >http://www.sciencedirect.com/science/article/pii/S0925400513003626</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.snb.2013.03.081" target="_blank" >10.1016/j.snb.2013.03.081</a>

Result language
angličtina
Original language name
Effect of the geometry of a working electrode on the behavior of a planar amperometric NO2 sensor based on solid polymer electrolyte
Original language description
An amperometric NO2 sensor with a new type of solid polymer electrolyte (SPE) and a glassy carbon working electrode is presented. The electrolyte is based on 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide [C2mim][NTf2] ionic liquid immobilized in poly(vinylidene fluoride) matrix [PVDF]. The analyte, gaseous nitrogen dioxide, was detected by reduction at -500 mV vs. a platinum pseudoreference electrode. The sensor exhibited a linear behavior in the whole tested range, i.e., 0 - 10 ppm, andits sensitivity was 0.66x10-6 A/ppm. The rise/recovery times were of the order of tens of seconds. In addition, the influence of the geometry (area and thickness) of the carbon working electrode on sensor response during short-term and long-term exposure to nitrogen dioxide was investigated. The area of the working electrode strongly influenced the stability and noise of the sensor: the smaller the electrode area, the better the stability of the sensor and the lower the noise level. The
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
JB - Sensors, detecting elements, measurement and regulation
OECD FORD branch
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2013
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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