Nanosized titania derived from a novel sol-gel process for ammonia gas sensor applications

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Biskupski, Diana ; Herbig, Bettina ; Schottner, Gerhard ; Moos, Ralf:
Nanosized titania derived from a novel sol-gel process for ammonia gas sensor applications.
In: Sensors and Actuators B: Chemical. Bd. 153 (2011) Heft 2 . - S. 329-334.
ISSN 0925-4005
DOI: https://doi.org/10.1016/j.snb.2010.10.029

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Abstract

Highly redispersible anatase nanoparticles were prepared by a novel sol–gel based hydrothermal process for gas sensing applications. Thin titania films composed of nanoparticles were deposited on Au interdigital electrodes by dip-coating, annealed and tested in a gas test bench at 350 °C. The anatase films showed a very high sensitivity towards ammonia and no cross interference by CO2, O2 and C3H8. To classify the sensor as an ammonia gas sensor, a comparison with other sensor designs from literature has been performed.