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Resistive NOx dosimeter to detect very low NOx concentrations : Proof-of-principle and comparison with classical sensing devices

Title data

Marr, Isabella ; Moos, Ralf:
Resistive NOx dosimeter to detect very low NOx concentrations : Proof-of-principle and comparison with classical sensing devices.
In: Sensors and Actuators B: Chemical. Vol. 248 (2017) . - pp. 848-855.
ISSN 0925-4005
DOI: https://doi.org/10.1016/j.snb.2016.12.112

Project information

Project title:
Project's official titleProject's id
No informationMO 1060/15-1

Project financing: Deutsche Forschungsgemeinschaft

Abstract in another language

Increasingly stringent emission and immission legislations for oxides of nitrogen demand a reliable air quality monitoring. Sensing devices following the resistive gas dosimeter principle may be an option for reliable long-term detection of toxic and harmful analyte gases like NOx. The presented resistive NOx dosimeter meets these requirements. During NOx exposure, a NOx storage material (potassium and manganese oxides on γ-alumina) adsorbs selectively NOx and changes its resistance, with a resistance change being proportional to the amount of adsorbed NOx, which is proportional to mean concentration average over time, i.e., it measures the NOx dose. Since the time derivative of the resistance change is proportional to the actual NOx concentration it can be also used as a NOx sensor. Besides a proof-of-principle, this work also compares the resistive NOx dosimeter with commercially available semiconducting and electrochemical NO2 gas sensors.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties > Faculty of Engineering Science
Faculties > Faculty of Engineering Science > Chair Functional Materials > Chair Functional Materials - Univ.-Prof. Dr.-Ing. Ralf Moos
Profile Fields > Advanced Fields > Advanced Materials
Research Institutions > Research Centres > Bayreuth Center for Material Science and Engineering - BayMAT
Research Institutions > Research Units > ZET - Zentrum für Energietechnik
Faculties
Faculties > Faculty of Engineering Science > Chair Functional Materials
Profile Fields
Profile Fields > Advanced Fields
Research Institutions
Research Institutions > Research Centres
Research Institutions > Research Units
Result of work at the UBT: Yes
DDC Subjects: 600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 17 May 2017 06:56
Last Modified: 17 May 2017 06:56
URI: https://eref.uni-bayreuth.de/id/eprint/37124