2D SnS₂ – A Material for Impedance-Based Low Temperature NOₓ Sensing?

Titelangaben

Schönauer-Kamin, Daniela ; Li, Yongxiang ; Wlodarski, Wojtek ; Ippolito, Samuel ; Moos, Ralf:
2D SnS₂ – A Material for Impedance-Based Low Temperature NOₓ Sensing?
In: Proceedings. Bd. 1 (2017) Heft 4 . - No. 455.
ISSN 2504-3900
DOI: https://doi.org/10.3390/proceedings1040455

Volltext

Link zum Volltext (externe URL):

Abstract

The sensor signal of tin disulfide (SnS2), a two-dimensional (2D) group-IV dichalcogenide, deposited as a film on a conductometric transducer is investigated at 130 °C. The focus is on the detection of the total NOx concentration. Therefore, the sensor response to NO and NO2 at ppm- and sub-ppm level at low operating temperature is determined. The results show that the sensing device provides a high sensor signal to NO and NO2 even at concentrations of only 390 ppb NOx. Both nitrous components, NO and NO2, yield the same signal, which offers the opportunity to sense the total concentration of NOx.