Planar Zeolite Film-Based Potentiometric Gas Sensors Manufactured by a Combined Thick-Film and Electroplating Technique

Sensors

Isabella Marr¹  Sebastian Reiß¹  Gunter Hagen¹ 

[1]Department of Functional Materials, University of Bayreuth, Bayreuth 95440, Germany

[2] E-Mail

关键词: solid state hydrocarbon gas sensor;    zeolite;    MFI;    ZSM-5;   

DOI  :  10.3390/s110807736

来源: mdpi

【 摘 要 】

Zeolites are promising materials in the field of gas sensors. In this technology-oriented paper, a planar setup for potentiometric hydrocarbon and hydrogen gas sensors using zeolites as ionic sodium conductors is presented, in which the Pt-loaded Na-ZSM-5 zeolite is applied using a thick-film technique between two interdigitated gold electrodes and one of them is selectively covered for the first time by an electroplated chromium oxide film. The influence of the sensor temperature, the type of hydrocarbons, the zeolite film thickness, and the chromium oxide film thickness is investigated. The influence of the zeolite on the sensor response is briefly discussed in the light of studies dealing with zeolites as selectivity-enhancing cover layers.

【 授权许可】

CC BY   
© 2011 by the authors; licensee MDPI, Basel, Switzerland.