Zeolite-based Materials for Gas Sensors

Xu, Xiaowen; Wang, Jing; Long, Yingcai

doi:10.3390/s6121751

Cited by 158 publications

(94 citation statements)

References 49 publications

(51 reference statements)

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“…Porous materials, especially those exhibiting ordered and uniform pore channel networks, such as mesoporous silica 3 or zeolites, 4 have shown a great potential for sensing applications. In particular, zeolites with pore sizes comparable to many industrially important molecules are interesting candidates for sensor materials.…”

Section: 2mentioning

confidence: 99%

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

Góra¹,

Kuhn²,

Baimpos³

et al. 2009

Analyst

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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 Ò 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.

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Section: 2mentioning

confidence: 99%

“…In particular, zeolites with pore sizes comparable to many industrially important molecules are interesting candidates for sensor materials. 4 A zeolite layer can act as a barrier which selectively limits gas exposure on the sensing surface or enriches specific analytes, enhancing the selective detection of small molecules.…”

Section: 2mentioning

confidence: 99%

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

Góra¹,

Kuhn²,

Baimpos³

et al. 2009

Analyst

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“…In typical chemiresistors, gas sensitive functional films [1,2], especially of zeolite films, are applied on interdigital electrodes and their resistances or their complex impedances are determined [3][4][5][6][7][8]. Mostly, sensors are operated in the range of room temperature to 400 °C.…”

Section: Introductionmentioning

confidence: 99%

Planar Microstrip Ring Resonator Structure for Gas Sensing and Humidity Sensing Purposes

Bogner

Steiner

Walter

et al. 2017

Proceedings of Eurosensors 2017, Paris, France, 3–6 September 2017

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“…Thus, zeolites can be used as a catalyst support, an absorbent for moisture and toxic gases, and for ion exchange. Recently, there have been several studies on conductive polymer/zeolite composites as gas or vapor sensing materials [20][21][22] . This work is aimed at fabricating the composites between D-PDPA and zeolite Y with H + as a cation (Y_H + ) to discriminate between the non-halogenated and halogenated hydrocarbon solvents, based on the electrical conductivity response when exposed to halogenated vapors.…”

Section: Introductionmentioning

confidence: 99%

Polydiphenylamine/Zeolite Y composites and electrical conductivity responses toward halogenated hydrocarbons

et al. 2013

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Composites of polydiphenylamine (D-PDPA) and zeolite Y with H + as the cation (Y_H + ) have been fabricated to be used as a sensing material towards non-halogenated and halogenated solvents (hexane, dichloromethane, 1, 2-dichloroethane, chloroform). These composites are toxic towards human and environment and are widely used as solvents in various industries. Polydiphenylamine, zeolite Y, and their composites are characterized by Fourier transform infrared spectroscopy, scanning electron microscopy, particle size analysis, surface area, and pore size analysis. The effects of the Si/Al ratio, zeolite content, and vapor concentrations are investigated. The electrical conductivity sensitivity of the composites towards the solvents is higher than the pristine D-PDPA by ~1 order of magnitude. The composites can discriminate a non-halogenated solvent from halogenated solvents. They possess maximum electrical conductivity sensitivity values towards dichloromethane, but the composites do not respond to hexane. Generally, the sensitivity of the composites increases with increasing zeolite content and vapor concentration. The interactions between the composites and the vapors are investigated by FT-IR spectroscopy and UV-Vis spectroscopy. A mechanism for the interaction between the composites and the solvents is proposed.

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Zeolite-based Materials for Gas Sensors

Abstract: This review of 53 references deals with the uses of zeolites and zeolite-based materials for developing gas sensors. The potential of these materials is highlighted and avenues for further research are suggested.

Cited by 158 publications

References 49 publications

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

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

Planar Microstrip Ring Resonator Structure for Gas Sensing and Humidity Sensing Purposes

Polydiphenylamine/Zeolite Y composites and electrical conductivity responses toward halogenated hydrocarbons

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