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Issue 10, 2009
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Selective sensor utilizing a thin monolayer of b-oriented silicalite-1 crystals–magneto-elastic ribbon assembly

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Abstract

This report presents the development of new selective gas sensors utilizing a b-oriented silicalite-1 layer–magneto-elastic ribbon assembly. The key principle for the operation of these sensors is monitoring the changes in the resonance frequency of the Metglas® strip in relation to the concentration of a component in the gas phase. This technique provides a simple way for monitoring the effects of the amount of adsorbed gases in the silicalite-1 coating. The thickness of the zeolite layer is that of a single crystal. The silicalite-1 crystals are oriented in the b-direction, meaning that the straight channels are perpendicular to the sensor surface, which is confirmed by X-ray diffraction (XRD) analysis. The sensor was able to repeatedly sense carbon dioxide in air and could discriminate between linear and branched hydrocarbons. The sensor was able to detect n-butane, while it did not respond to the presence of iso-butane, indicating sensing selectivity.

Graphical abstract: Selective sensor utilizing a thin monolayer of b-oriented silicalite-1 crystals–magneto-elastic ribbon assembly

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Publication details

The article was received on 11 Mar 2009, accepted on 30 Jul 2009 and first published on 13 Aug 2009


Article type: Paper
DOI: 10.1039/B905039F
Analyst, 2009,134, 2118-2122

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    Selective sensor utilizing a thin monolayer of b-oriented silicalite-1 crystals–magneto-elastic ribbon assembly

    L. Gora, J. Kuhn, T. Baimpos, V. Nikolakis, F. Kapteijn and E. M. Serwicka, Analyst, 2009, 134, 2118
    DOI: 10.1039/B905039F

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