| Title: | Comparison of Thin-Film Capacitor Geometries for the Detection of Volatile Organic Compounds Using a ZIF-8 Affinity Layer |
| Author(s): | Matavz A; Verstreken MFK; Smets J; Tietze ML; Ameloot R; |
| Address: | "Centre for Membrane Separations, Adsorption, Catalysis, and Spectroscopy, KU Leuven, 3001 Leuven, Belgium" |
| DOI: | 10.1021/acssensors.3c00859 |
| ISSN/ISBN: | 2379-3694 (Electronic) 2379-3694 (Linking) |
| Abstract: | "Their chemical diversity, uniform pore sizes, and large internal surface areas make metal-organic frameworks (MOFs) highly suitable for volatile organic compound (VOC) adsorption. This work compares two geometries of capacitive VOC sensors that use the MOF material ZIF-8 as an affinity layer. When using a permeable top electrode (thickness < 25 nm), the metal-insulator-metal (MIM) sandwich configuration exhibits superior sensitivity, an improved detection limit, and a smaller footprint than the conventional interdigitated electrode layout. Moreover, the transduction of VOC adsorption in ZIF-8 via MIM capacitors is more sensitive to polar VOCs and provides better selectivity at high loadings than gravimetric and optical transductions" |
| Keywords: | Adsorption Electrodes Food *Metal-Organic Frameworks *Volatile Organic Compounds Mof capacitive sensors gravimetric sensors interdigitated electrodes metal-organic framework optical sensors transduction mechanism; |
| Notes: | "MedlineMatavz, Aleksander Verstreken, Margot F K Smets, Jorid Tietze, Max L Ameloot, Rob eng Comparative Study Research Support, Non-U.S. Gov't 2023/07/27 ACS Sens. 2023 Aug 25; 8(8):3167-3173. doi: 10.1021/acssensors.3c00859. Epub 2023 Jul 27" |
