P2.8.10 Amperometric NO2 Sensor Based on Solid Polymer Electrolyte for Screen Printing Technology
- 14th International Meeting on Chemical Sensors - IMCS 2012
2012-05-20 - 2012-05-23
- P2.8 Sensors Based on New Materials
- P. Kuberský, R. Soukup, R. Vik - University of West Bohemia in Pilsen, Faculty of Electrical Engineering, Department of Technologies and Measurement (Czech Republic), A. Hamácek, S. Nešpurek - University of West Bohemia in Pilsen, Faculty of Electrical Engineering, Regional Innovation Centre for Electrical engineering, Department of Material research (Czech Republic)
- 1680 - 1683
Amperometric NO2 sensor with solid polymer electrolyte (SPE) and with a new type of carbon working electrode was developed. The electrolyte is based on 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide [EMIM:TFSI] immobilized in poly(vinilidene fluoride) matrix. The analyte, gaseous nitrogen dioxide, was detected by reduction at -500 mV vs. platinum reference electrode. The sensor showed almost a linear behavior and its sensitivity was 2x10^-6 A/ppm in the whole tested range, i.e., 1 - 10 ppm. The rise/decay time was of order tens of seconds. It has been demonstrated that glassy carbon is good candidate for preparation of the working electrode. The designed topology of the sensor is suitable for screen printing technology.