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Screen-Printable Colorimetric Sensors for the Monitoring of Toxic Gases in Ambient Air

: Engel, Laura; Tarantik, Karina; Benito-Altamirano, Ismael; Pannek, Carolin; Prades, Joan Daniel; Wöllenstein, Jürgen

Postprint urn:nbn:de:0011-n-5591957 (877 KByte PDF)
MD5 Fingerprint: 4d81165983e08b58f592ab3a97133e6b
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Created on: 25.9.2019

Institute of Electrical and Electronics Engineers -IEEE-:
IEEE International Conference on Flexible and Printable Sensors and Systems, FLEPS 2019. Conference Proceedings : 8-10 July 2019, Glasgow
Piscataway, NJ: IEEE, 2019
ISBN: 978-1-5386-9304-9
ISBN: 978-1-5386-9305-6
3 pp.
International Conference on Flexible and Printable Sensors and Systems (FLEPS) <2019, Glasgow>
Conference Paper, Electronic Publication
Fraunhofer IPM ()
colorimetric sensor; Toxic Gases; ambient air; Gas Monitoring; Gas-Sensitive Pastes

We present a fast and simple method to monitor toxic gases in ambient air based on a visible color change of a printed paper sensor, which can be evaluated using a camera (e.g. smartphone) or naked eye. This study focuses on the development of gas-sensitive pastes for the processing of the colorimetic material by screen printing. Indicators for the detection of ammonia (NH3 ), hydrogen sulfide (H2S) and formaldehyde (CH2O) were examined in closer detail. The sensing properties of the respective indicator towards the target gas was characterized via UV/Vis spectroscopy in reflection.