B2.2 Pulsed Polarization on Au|YSZ NOx-Sensors with and without Catalytic Layer
- SMSI 2021
2021-05-03 - 2021-05-06
- SMSI 2021 - Sensors and Instrumentation
- B2 Gas Sensors II
- N. Donker, D. Schönauer-Kamin, R. Moos - University of Bayreuth, Bayreuth (Germany), A. Ruchets, J. Zosel - Kurt-Schwabe-Institut für Mess- und Sensortechnik Meinsberg e.V., Waldheim (Germany), U. Guth - Dresden University of Technology, Dresden (Germany)
- 113 - 114
Sensors of the type Au|YSZ|Au were produced, and some of them were covered with an additional Pt containing catalyst layer. These sensors were operated in the pulsed polarization mode. Their sensitivity to NOx was investigated. The pure gold sensor showed almost no NO signal, but a clear signal towards NO2. The catalyst-coated sensor responded to both gases, NO and NO2. Therefore, we assume that NO2 is essential for the sensor effect, which could not have been explicitly shown in previous studies.