Title: Novel alcohol vapour sensor based on the mixedligand modified MOF-199 coated quartz crystal microbalance
Journal: International Journal of Environmental Analytical Chemistry
Author: 1,2. Ali Aghakhani, 2. Farshad Mohamadi, Javad Ghadimi
Year: 2019
Address: 1. Department of Food Science, Engineering and Technology, University of Tehran, Karaj, Iran 2. Department of Semiconductors, Materials and Energy Research Centre, Karaj, Iran
Abstract: Alcohol vapour sensors can be used in many fields, such as food quality monitoring, etc. Herein, we developed an alcohol vapour sensor based on the quartz crystal microbalance (QCM) technology. A modified metal-organic frameworks (MOFs), m-MOF-199 was coated on the QCM electrode surface. The different coating methods, including drop coating, spin coating and electrospray were used for preparing a thin film on the surface of the QCM electrode. MOF-199 was modified by mixed-ligand strategy in which benzotriazole ligand was introduced into the structure of MOF-199 and characterised by FT-IR, XRD, BET and FE-SEM techniques. The smaller dimension of m-MOF199 led to a better thin film and enhanced QCM sensor efficiency. In order to evaluate the QCM sensor, ethanol was used as a model compound. The developed ethanol sensor showed two linear ranges in the concentration between of 0.5–30 mg L−1 and 30–300 mg L−1 with a 0.1 and 0.5 mg L−1, LOD and LOQ, respectively. The relative standard deviation (RSD %) of measurements was less than 10%. The developed sensor could be applied for various applications including food, environmental and bioanalysis.
Keywords: Modified-MOF-199, metalorganic frameworks, mixedligand strategy, quartz crystal microbalance, ethanol vapour, sensor
Application: Sensor
Product Model 1: High Voltage Power Supply (HV35POC)
Product Model 2: Syringe Pump
URL: #https://www.tandfonline.com/doi/abs/10.1080/03067319.2019.1689968#