Detail publikace

An Electrochemical NO2 Sensor Based on Ionic Liquid: Influence of the Morphology of the Polymer Electrolyte on Sensor Sensitivity

KUBERSKÝ, P. ALTŠMÍD, J. HAMÁČEK, A. NEŠPŮREK, S. ZMEŠKAL, O.

Originální název

An Electrochemical NO2 Sensor Based on Ionic Liquid: Influence of the Morphology of the Polymer Electrolyte on Sensor Sensitivity

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

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.

Klíčová slova

ionic liquid; amperometric NO2 sensor; carbon nanotube; aerosol-jet printing

Autoři

KUBERSKÝ, P.; ALTŠMÍD, J.; HAMÁČEK, A.; NEŠPŮREK, S.; ZMEŠKAL, O.

Rok RIV

2015

Vydáno

11. 11. 2015

Nakladatel

MDPI

Místo

Basel, Switzerland

ISSN

1424-8220

Periodikum

SENSORS

Ročník

15

Číslo

11

Stát

Švýcarská konfederace

Strany od

28421

Strany do

28434

Strany počet

14

URL

http://www.mdpi.com/1424-8220/15/11/28421

Plný text v Digitální knihovně

http://hdl.handle.net/11012/137236

BibTex

@article{BUT118144,
  author="Petr {Kuberský} and Jakub {Altšmíd} and Aleš {Hamáček} and Stanislav {Nešpůrek} and Oldřich {Zmeškal}",
  title="An Electrochemical NO2 Sensor Based on Ionic Liquid: Influence of the Morphology of the Polymer Electrolyte on Sensor Sensitivity",
  journal="SENSORS",
  year="2015",
  volume="15",
  number="11",
  pages="28421--28434",
  doi="10.3390/s151128421",
  issn="1424-8220",
  url="http://www.mdpi.com/1424-8220/15/11/28421"
}