Gas Sensing Properties of Mg-Incorporated Metal-Organic Frameworks

Sensors
Jae-Hyoung LeeSang Sub Kim

Abstract

The gas sensing properties of two novel series of Mg-incorporated metal-organic frameworks (MOFs), termed Mg-MOFs-I and -II, were assessed. The synthesized iso-reticular type Mg-MOFs exhibited good crystallinity, high thermal stability, needle-shape morphology and high surface area (up to 2900 m2·g-1), which are promising for gas sensing applications. Gas-sensing studies of gas sensors fabricated from Mg-MOFs-II revealed better sensing performance, in terms of the sensor dynamics and sensor response, at an optimal operating temperature of 200 °C. The MOF gas sensor with a larger pore size and volume showed shorter response and recovery times, demonstrating the importance of the pore size and volume on the kinetic properties of MOF-based gas sensors. The gas-sensing results obtained in this study highlight the potential of Mg-MOFs gas sensors for the practical monitoring of toxic gases in a range of environments.

References

Jul 23, 2009·Journal of the American Chemical Society·Masaaki SadakiyoHiroshi Kitagawa
Aug 20, 2009·Angewandte Chemie·David FarrussengCatherine Pinel
Nov 11, 2011·Chemical Reviews·Lauren E KrenoJoseph T Hupp
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Dec 30, 2011·Chemical Reviews·Kenji SumidaJeffrey R Long
Aug 31, 2013·Science·Hiroyasu FurukawaOmar M Yaghi
Jun 30, 2015·ACS Applied Materials & Interfaces·Jae-Hun KimSang Sub Kim
Dec 27, 2015·Analytical Chemistry·Zhe WangXiangqun Zeng
Jan 11, 2016·Angewandte Chemie·Lei SunMircea Dincă
Mar 24, 2016·ACS Applied Materials & Interfaces·Martin DrobekSang Sub Kim
Nov 17, 2017·Nano Convergence·Jae-Hyoung LeeSang Sub Kim

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Methods Mentioned

BETA
scanning electron microscopy
X-ray

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