NG.1 - Development of Metal-Organic Framework (MOF) Coated Bulk Acoustic Sensors for Carbon Dioxide and Methane Detection
- 17th International Meeting on Chemical Sensors - IMCS 2018
2018-07-15 - 2018-07-19
- New Materials for Gas Sensing
- J. Gustafson, C. Wilmer - University of Pittsburgh Department of Chemical & Petroleum Engineering, Pittsburgh (USA), J. Devkota, P. Ohodnicki - National Energy Technology Laboratory, Pittsburgh (USA)
- 344 - 345
In this study, a quartz crystal microbalance (QCM) sensor coated with a thin layer of the metal-organic framework (MOF) ZIF-8 was fabricated and tested for detection of N2/CO2/CH4 with a comparison to a computational analysis. We analyzed the mass uptake of mixtures of N2, CO2, and CH4 in ZIF-8 in atmospheric conditions, using all mixtures with varying each component from 0 to 100 percent by 20 percent increments. Experiments used a ZIF-8 film of 500 nm thickness and resulted in mass uptake of the gases showing a positive linear relationship with CO2. Similarly, the adsorption of all mixtures in the MOF were
obtained computationally via grand canonical Monte Carlo (GCMC) simulations, reported also as the total mass uptake of the MOF. We directly compare our experimental and computational results, showing that similar trends exist in the affinity of ZIF-8 towards CO2. We show that computational methods may be used to model the output of a chemical sensor, specifically in this work for a MOF on QCM device.