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Article

Gas Sensing Properties of Mg-Incorporated Metal–Organic Frameworks

1
Department of Materials Science and Engineering, Inha University, Incheon 22212, Korea
2
Faculty of Chemistry, Ho Chi Minh City University of Education, Ho Chi Minh City 721337, Vietnam
3
Center for Innovative Materials and Architectures (INOMAR), Vietnam National University, Ho Chi Minh City 721337, Vietnam
*
Authors to whom correspondence should be addressed.
Jae-Hyoung Lee and Thanh-Binh Nguyen contributed equally to this work.
Sensors 2019, 19(15), 3323; https://doi.org/10.3390/s19153323
Received: 26 June 2019 / Revised: 25 July 2019 / Accepted: 26 July 2019 / Published: 29 July 2019
(This article belongs to the Section Chemical Sensors)
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. View Full-Text
Keywords: Mg-MOF; gas sensor; porosity; toxic gas; sensing mechanism Mg-MOF; gas sensor; porosity; toxic gas; sensing mechanism
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MDPI and ACS Style

Lee, J.-H.; Nguyen, T.-B.; Nguyen, D.-K.; Kim, J.-H.; Kim, J.-Y.; Phan, B.T.; Kim, S.S. Gas Sensing Properties of Mg-Incorporated Metal–Organic Frameworks. Sensors 2019, 19, 3323. https://doi.org/10.3390/s19153323

AMA Style

Lee J-H, Nguyen T-B, Nguyen D-K, Kim J-H, Kim J-Y, Phan BT, Kim SS. Gas Sensing Properties of Mg-Incorporated Metal–Organic Frameworks. Sensors. 2019; 19(15):3323. https://doi.org/10.3390/s19153323

Chicago/Turabian Style

Lee, Jae-Hyoung, Thanh-Binh Nguyen, Duy-Khoi Nguyen, Jae-Hun Kim, Jin-Young Kim, Bach T. Phan, and Sang S. Kim 2019. "Gas Sensing Properties of Mg-Incorporated Metal–Organic Frameworks" Sensors 19, no. 15: 3323. https://doi.org/10.3390/s19153323

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