Fabrication of Sensitive QCM Sensor based on ZIF-8/MWCNT Composite and its Application in Volatile Organic Compounds Sensing
Paper ID : 1248-ICNS
mohammad shojaee *1, maryam tohidi2, sedigheh zeinali2, elahe haghighi1
1Department of Nanochemical Engineering, Faculty of Advanced Technology, University of Shiraz, Shiraz, Iran
2Department of Nanochemical Engineering, Faculty of Advanced Technologies, Shiraz University, Shiraz, Iran
Detection of volatile organic compounds (VOCs) using weight detectable quartz crystal microbalance (QCM) sensor coated with crystalline metal-organic framework (MOF) thin film is described in this study. Metal-organic frameworks (MOFs) are made from metal ions connected with organic ligands acting as bridges. A thin film of metal organic framework is deposited using spry gun method onto the surface of QCM. This method is simple compared to other method such as electro spinning and it has been commonly used for creation of MOF thin films The MOF layer worked as the effective concentrators of VOC gases, and the adsorption/desorption processes of the VOCs could be monitored by the frequency changes of weight-detectable sensor. In this work, ZIF-8/ MWCNT composite was synthesized and used as a sensitive layer. The sensitivity and selectivity of the sensor were investigated in the presence of 2-propoanol, dimethylformamide (DMF), pyridine, toluene and xylene. The best response was observed for DMF
quartz crystal microbalance (QCM); ZIF-8/MWCNT composite; dimethylformamide (DMF)
Status : Abstract Accepted (Poster Presentation)