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Metal-Organic Frameworks for Sensing Applications in the Gas Phase
Several metal-organic framework (MOF) materials were under investigated to test their applicability as sensor materials for impedimetric gas sensors. The materials were tested in a temperature range of 120 °C - 240 °C with varying concentrations of O(2), CO(2), C(3)H(8), NO, H(2), ethanol and methan...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Molecular Diversity Preservation International (MDPI)
2009
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3345849/ https://www.ncbi.nlm.nih.gov/pubmed/22573973 http://dx.doi.org/10.3390/s90301574 |
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author | Achmann, Sabine Hagen, Gunter Kita, Jaroslaw Malkowsky, Itamar M. Kiener, Christoph Moos, Ralf |
author_facet | Achmann, Sabine Hagen, Gunter Kita, Jaroslaw Malkowsky, Itamar M. Kiener, Christoph Moos, Ralf |
author_sort | Achmann, Sabine |
collection | PubMed |
description | Several metal-organic framework (MOF) materials were under investigated to test their applicability as sensor materials for impedimetric gas sensors. The materials were tested in a temperature range of 120 °C - 240 °C with varying concentrations of O(2), CO(2), C(3)H(8), NO, H(2), ethanol and methanol in the gas atmosphere and under different test gas humidity conditions. Different sensor configurations were studied in a frequency range of 1 Hz -1 MHz and time-continuous measurements were performed at 1 Hz. The materials did not show any impedance response to O(2), CO(2), C(3)H(8), NO, or H(2) in the gas atmospheres, although for some materials a significant impedance decrease was induced by a change of the ethanol or methanol concentration in the gas phase. Moreover, pronounced promising and reversible changes in the electric properties of a special MOF material were monitored under varying humidity, with a linear response curve at 120 °C. Further investigations were carried out with differently doped MOF materials of this class, to evaluate the influence of special dopants on the sensor effect. |
format | Online Article Text |
id | pubmed-3345849 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2009 |
publisher | Molecular Diversity Preservation International (MDPI) |
record_format | MEDLINE/PubMed |
spelling | pubmed-33458492012-05-09 Metal-Organic Frameworks for Sensing Applications in the Gas Phase Achmann, Sabine Hagen, Gunter Kita, Jaroslaw Malkowsky, Itamar M. Kiener, Christoph Moos, Ralf Sensors (Basel) Article Several metal-organic framework (MOF) materials were under investigated to test their applicability as sensor materials for impedimetric gas sensors. The materials were tested in a temperature range of 120 °C - 240 °C with varying concentrations of O(2), CO(2), C(3)H(8), NO, H(2), ethanol and methanol in the gas atmosphere and under different test gas humidity conditions. Different sensor configurations were studied in a frequency range of 1 Hz -1 MHz and time-continuous measurements were performed at 1 Hz. The materials did not show any impedance response to O(2), CO(2), C(3)H(8), NO, or H(2) in the gas atmospheres, although for some materials a significant impedance decrease was induced by a change of the ethanol or methanol concentration in the gas phase. Moreover, pronounced promising and reversible changes in the electric properties of a special MOF material were monitored under varying humidity, with a linear response curve at 120 °C. Further investigations were carried out with differently doped MOF materials of this class, to evaluate the influence of special dopants on the sensor effect. Molecular Diversity Preservation International (MDPI) 2009-03-06 /pmc/articles/PMC3345849/ /pubmed/22573973 http://dx.doi.org/10.3390/s90301574 Text en © 2009 by the authors; licensee MDPI, Basel, Switzerland This article is an open-access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/). |
spellingShingle | Article Achmann, Sabine Hagen, Gunter Kita, Jaroslaw Malkowsky, Itamar M. Kiener, Christoph Moos, Ralf Metal-Organic Frameworks for Sensing Applications in the Gas Phase |
title | Metal-Organic Frameworks for Sensing Applications in the Gas Phase |
title_full | Metal-Organic Frameworks for Sensing Applications in the Gas Phase |
title_fullStr | Metal-Organic Frameworks for Sensing Applications in the Gas Phase |
title_full_unstemmed | Metal-Organic Frameworks for Sensing Applications in the Gas Phase |
title_short | Metal-Organic Frameworks for Sensing Applications in the Gas Phase |
title_sort | metal-organic frameworks for sensing applications in the gas phase |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3345849/ https://www.ncbi.nlm.nih.gov/pubmed/22573973 http://dx.doi.org/10.3390/s90301574 |
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