An Electrochemical NO2 Sensor Based on Ionic Liquid: Influence of the Morphology of the Polymer Electrolyte on Sensor Sensitivity
A systematic study was carried out to investigate the effect of ionic liquid in solid polymer electrolyte (SPE) and its layer morphology on the characteristics of an electrochemical amperometric nitrogen dioxide sensor. Five different ionic liquids were immobilized into a solid polymer electrolyte a...
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doaj-61467ad3aec34a0e98cc66261f14ced22020-11-24T23:04:22ZengMDPI AGSensors1424-82202015-11-011511284212843410.3390/s151128421s151128421An Electrochemical NO2 Sensor Based on Ionic Liquid: Influence of the Morphology of the Polymer Electrolyte on Sensor SensitivityPetr Kuberský0Jakub Altšmíd1Aleš Hamáček2Stanislav Nešpůrek3Oldřich Zmeškal4Department of Technologies and Measurement, Faculty of Electrical Engineering/RICE, University of West Bohemia, Plzeň 306 14, Czech RepublicDepartment of Technologies and Measurement, Faculty of Electrical Engineering/RICE, University of West Bohemia, Plzeň 306 14, Czech RepublicDepartment of Technologies and Measurement, Faculty of Electrical Engineering/RICE, University of West Bohemia, Plzeň 306 14, Czech RepublicDepartment of Technologies and Measurement, Faculty of Electrical Engineering/RICE, University of West Bohemia, Plzeň 306 14, Czech RepublicFaculty of Chemistry, Brno University of Technology, Purkyňova 464/118, 612 00 Brno, Czech RepublicA systematic study was carried out to investigate the effect of ionic liquid in solid polymer electrolyte (SPE) and its layer morphology on the characteristics of an electrochemical amperometric nitrogen dioxide sensor. Five different ionic liquids were immobilized into a solid polymer electrolyte and key sensor parameters (sensitivity, response/recovery times, hysteresis and limit of detection) were characterized. The study revealed that the sensor based on 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([EMIM][N(Tf)2]) showed the best sensitivity, fast response/recovery times, and low sensor response hysteresis. The working electrode, deposited from water-based carbon nanotube ink, was prepared by aerosol-jet printing technology. It was observed that the thermal treatment and crystallinity of poly(vinylidene fluoride) (PVDF) in the solid polymer electrolyte influenced the sensitivity. Picture analysis of the morphology of the SPE layer based on [EMIM][N(Tf)2] ionic liquid treated under different conditions suggests that the sensor sensitivity strongly depends on the fractal dimension of PVDF spherical objects in SPE. Their deformation, e.g., due to crowding, leads to a decrease in sensor sensitivity.http://www.mdpi.com/1424-8220/15/11/28421ionic liquidamperometric NO2 sensorcarbon nanotubeaerosol-jet printing |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Petr Kuberský Jakub Altšmíd Aleš Hamáček Stanislav Nešpůrek Oldřich Zmeškal |
spellingShingle |
Petr Kuberský Jakub Altšmíd Aleš Hamáček Stanislav Nešpůrek Oldřich Zmeškal An Electrochemical NO2 Sensor Based on Ionic Liquid: Influence of the Morphology of the Polymer Electrolyte on Sensor Sensitivity Sensors ionic liquid amperometric NO2 sensor carbon nanotube aerosol-jet printing |
author_facet |
Petr Kuberský Jakub Altšmíd Aleš Hamáček Stanislav Nešpůrek Oldřich Zmeškal |
author_sort |
Petr Kuberský |
title |
An Electrochemical NO2 Sensor Based on Ionic Liquid: Influence of the Morphology of the Polymer Electrolyte on Sensor Sensitivity |
title_short |
An Electrochemical NO2 Sensor Based on Ionic Liquid: Influence of the Morphology of the Polymer Electrolyte on Sensor Sensitivity |
title_full |
An Electrochemical NO2 Sensor Based on Ionic Liquid: Influence of the Morphology of the Polymer Electrolyte on Sensor Sensitivity |
title_fullStr |
An Electrochemical NO2 Sensor Based on Ionic Liquid: Influence of the Morphology of the Polymer Electrolyte on Sensor Sensitivity |
title_full_unstemmed |
An Electrochemical NO2 Sensor Based on Ionic Liquid: Influence of the Morphology of the Polymer Electrolyte on Sensor Sensitivity |
title_sort |
electrochemical no2 sensor based on ionic liquid: influence of the morphology of the polymer electrolyte on sensor sensitivity |
publisher |
MDPI AG |
series |
Sensors |
issn |
1424-8220 |
publishDate |
2015-11-01 |
description |
A systematic study was carried out to investigate the effect of ionic liquid in solid polymer electrolyte (SPE) and its layer morphology on the characteristics of an electrochemical amperometric nitrogen dioxide sensor. Five different ionic liquids were immobilized into a solid polymer electrolyte and key sensor parameters (sensitivity, response/recovery times, hysteresis and limit of detection) were characterized. The study revealed that the sensor based on 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([EMIM][N(Tf)2]) showed the best sensitivity, fast response/recovery times, and low sensor response hysteresis. The working electrode, deposited from water-based carbon nanotube ink, was prepared by aerosol-jet printing technology. It was observed that the thermal treatment and crystallinity of poly(vinylidene fluoride) (PVDF) in the solid polymer electrolyte influenced the sensitivity. Picture analysis of the morphology of the SPE layer based on [EMIM][N(Tf)2] ionic liquid treated under different conditions suggests that the sensor sensitivity strongly depends on the fractal dimension of PVDF spherical objects in SPE. Their deformation, e.g., due to crowding, leads to a decrease in sensor sensitivity. |
topic |
ionic liquid amperometric NO2 sensor carbon nanotube aerosol-jet printing |
url |
http://www.mdpi.com/1424-8220/15/11/28421 |
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