ZSM-5 zeolite films on Si substrates grown by in-situ seeding and secondary crystal growth and application in an electrochemical hydrocarbon gas sensor

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Zampieri, Alessandro ; Dubbe, Andreas ; Schwieger, Wilhelm ; Avhale, Abhijeet ; Moos, Ralf:
ZSM-5 zeolite films on Si substrates grown by in-situ seeding and secondary crystal growth and application in an electrochemical hydrocarbon gas sensor.
In: Microporous and Mesoporous Materials. Bd. 111 (2008) Heft 1-3 . - S. 530-535.
ISSN 1873-3093
DOI: https://doi.org/10.1016/j.micromeso.2007.08.026

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Abstract

ZSM-5 zeolite films were grown on Si substrates by a two-step hydrothermal synthesis consisting of in situ seeding and secondary crystal growth. The films were 8–13 μm thick and partly oriented with the c-axis perpendicular to the substrate surface. After ion exchange with sodium ions, one film was applied as solid electrolyte in a potentiometric hydrocarbon gas sensor. A fast and reversible voltage response of the sensor to varying propane concentrations (100 ppm – 10%) was observed in O2/CO2/N2 gas mixtures at 723 K