Metal-organic frameworks for QCM-based gas sensors: A review

Gas safety has penetrated into every corner of life. As such, detection and control of hazardous gases or humidity will always be indispensable. Quartz crystal microbalance (QCM) platform modified by various sensing materials is a novel and high performance sensing device. As functional materials, metal-organic frameworks (MOFs) with unique physical and chemical properties show promise in gas sensing. In this review, we overviewed the application of MOFs and MOF-based materials in gas monitoring based on QCM. A variety of harmful gases (including formaldehyde, toluene, acetone, etc.) and humidity are mentioned. Future perspectives and challenges faced by MOFs in gas sensing will also be discussed. This review tries to summarize the development of MOF science and application in the research field of QCM-based gas sensor, and provide guidance to scientists who have just come into contact with this field. (C) 2020 Elsevier B.V. All rights reserved.