Application of Metal-Organic Framework-Based Composites for Gas Sensing and Effects of Synthesis Strategies on Gas-Sensitive Performance

Abstract

Gas sensing materials, such as semiconducting metal oxides (SMOx), carbon-based materials, and polymers have been studied in recent years. Among of them, SMOx-based gas sensors have higher operating temperatures; sensors crafted from carbon-based materials have poor selectivity for gases and longer response times; and polymer gas sensors have poor stability and selectivity, so it is necessary to develop high-performance gas sensors. As a porous material constructed from inorganic nodes and multidentate organic bridging linkers, the metal-organic framework (MOF) shows viable applications in gas sensors due to its inherent large specific surface area and high porosity. Thus, compounding sensor materials with MOFs can create a synergistic effect. Many studies have been conducted on composite MOFs with three materials to control the synergistic effects to improve gas sensing performance. Therefore, this review summarizes the application of MOFs in sensor materials and emphasizes the synthesis progress of MOF composites. The challenges and development prospects of MOF-based composites are also discussed.

A review on the synthesis and applications of sustainable copper-based nanomaterials

“…417,418 Thus, a variety of gas sensors has been reported in the literature, including solid electrolyte gas sensors, electrochemical gas sensors, metal oxide semiconductor (MOS) sensors, catalytic combustion gas sensors and other types of gas sensors. 408,419 Copper and copper-based NM sensors are sensitive to detect a wide range of pollutants and noxious gases even at low ppm and ppb concentrations (Table 10).…”

Thin Film Prepared by Gas–Liquid Interfacial Self‐Assembly Method and its Applications in Semiconductor Gas Sensors

“…As the first link of data acquisition in modern information technology, the gas sensor is an indispensable part of the military, aviation, industry, individuals' livelihood, and other fields. [1][2][3] Gas sensors have many types and functions, including catalytic combustion type, [4] electrochemical type, [5] photoelectric type, [6] thermoelectric type, magnetoelectric type, and semiconductor type. Semiconductor gas sensors based on metal oxide have the advantages of high sensitivity, wide detection range, small size, and low power consumption, and have been developed rapidly.…”

Hydrothermally Synthesized ZnSnO3 Nanoflakes Based Low-Cost Sensing Device for High Performance CO2 Monitoring

“…Also, conducting polymers-based CO 2 gas sensors possess low stability, long recovery time, and poor mechanical strength. 22 Thus, MOS is the most identified group for monitoring CO 2 due to their exceptional properties like easy fabrication, costeffectiveness, high stability, and miniaturized versatile morphologies, etc. 23,24 The MOS devices are used successfully in many areas like climate change, security processes, and medical equipment such as breath analyzers.…”