Metal-Organic Frameworks for Sensing Applications in the Gas Phase

By Sabine Achmann, G. Hagen, J. Kita, I. Malkowsky, C. Kiener, R. Moos. Italian National Conference on Sensors, 2009

374 citations recorded by the source corpus.

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 O2, CO2, C3H8, NO, H2, 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 O2, CO2, C3H8, NO, or H2 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.

Subfields: Electrical and Electronic Engineering, Inorganic Chemistry, Polymers and Plastics

View Paper: https://www.semanticscholar.org/paper/c961659d89002006dc20f86fa9528491d8e36a8e

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In Inorganic Chemistry

1. Jianping Lei
2. Lin Cui
3. Ruocan Qian
4. Pinghua Ling
5. Huangxian Ju

Citations in the corpus

• A Survey on Gas Sensing Technology (2012, background): “Among them, the three major areas that receive the most attention are investigation of different kinds of sensors, research about sensing principles, and fabrication techniques [87–115].”