5. Metal Organic Frameworks and Particulate Matter 2.5 Capture

Metal organic frameworks (MOFs) are a class of developing chemical compounds that have a multitude of properties beneficial for small particle capture, including high porosity, large surface area, tunability, and a generous surface area to volume ratio. This uncommon combination of properties has resulted in MOFs being employed for various applications, including energy storage, the construction of electronic components, and gas containment. By exploiting these properties and applying knowledge of particulate matter, specifically PM 2.5, MOFs can be applied to filters utilized for air pollution control in heavily polluted and industrialized regions. 
    MOF synthesis can be achieved through the combination of an aqueous organic compound and aqueous metal linker, where a fabrication process is employed to ensure the reaction occurs on the substrate. This process relies on rapid synthesis, allowing multiple layers of MOF to be coated on a single substrate in an effort to improve capture efficiency. Using a PDR-1500 and a pollution air chamber system, the quantity of PM 2.5 entering the chamber versus the quantity leaving after being filtered through the textile can be determined, and therefore, the effectiveness of the MOF. 
    Performance is maximized via the optimization of the MOF and substrate relationship, creating an idealized pressure drop and PM 2.5 capture ratio. The successful coupling of MOF and an ideal substrate will increase the economical availability of pollution protection means globally.