MIL-53(Al)/Carbon Films for CO2-Sensing at High Pressure

Freund P, Mielewczyk L, Rauche M, Senkovska I, Ehrling S, Brunner E, Kaskel S (2019)

Publication Type: Journal article

Publication year: 2019

Journal

ACS Sustainable Chemistry & Engineering American Chemical Society

Book Volume: 7

Pages Range: 4012-4018

Journal Issue: 4

DOI: 10.1021/acssuschemeng.8b05368

Abstract

Chemiresistive threshold sensor films based on the switchable metal-organic framework (MOF) MIL-53(Al) (MIL = Matériaux de l'Institut Lavoisier) and conductive carbon additives were developed, characterized and successfully applied for selective detection of CO 2 in mixtures with methane at high pressure (up to 25 bar). Two transitions of the crystal structure, from the lp (large pore) form to the np (narrow pore) form at CO 2 partial pressure below 0.5 bar and back to the lp form at ca. 6 bar, also known as "breathing", result in two detectable stepwise resistance changes of sensor film, if CO 2 is present in the mixture with methane. The sensor shows a rapid response of the specific resistance (response time ca. 25 s), which directly correlates to the expected structural change of the switchable MOF. Two films containing carbon or carbon nanotubes as conductive component were compared regarding the influence of the additive particles geometry on sensing performance, showing benefits of the isotropic particle shape. Cyclic sensing measurements proved the durability of the composites.

Involved external institutions

Technische Universität Dresden DE Germany (DE)

How to cite

APA:

Freund, P., Mielewczyk, L., Rauche, M., Senkovska, I., Ehrling, S., Brunner, E., & Kaskel, S. (2019). MIL-53(Al)/Carbon Films for CO2-Sensing at High Pressure. ACS Sustainable Chemistry & Engineering, 7(4), 4012-4018. https://dx.doi.org/10.1021/acssuschemeng.8b05368

MLA:

Freund, Pascal, et al. "MIL-53(Al)/Carbon Films for CO2-Sensing at High Pressure." ACS Sustainable Chemistry & Engineering 7.4 (2019): 4012-4018.

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