Abstract
Herein, we present a simple and inexpensive method for the immobilization of Metal–Organic Framework (MOF) particles in the form of pellets and membranes. This processing procedure is possible using polymethacrylate polymer (PMMA) as a binding or coating agent, improving stability and significantly increasing the water repellency. HKUST and MMOF-74 (M = Mg2+, Zn2+, Co2+ or Ni2+) are stable with the processing and high loadings of MOF materials into the processed pellet or membranes. These methods can provide the know-how for the immobilization of MOFs for, for example, application in air purification and the removal of toxic compounds and are well-suited for deployment in air purification devices.
Highlights
Metal–Organic Frameworks (MOFs) are a versatile and broad class of crystalline materials with high porosity and a massive internal surface area [1,2,3]
Much of the present research focuses on developing MOF processing methods [12]
The processing of these materials into pellets were chosen due to two main reasons: it is a simple and inexpensive processing method, which can be advantageous to transpose to industry; and, in terms of engineering in industrial practice MOFs, are required to be pelletized and packed into columns for real gas capture and process studies [37]
Summary
Metal–Organic Frameworks (MOFs) are a versatile and broad class of crystalline materials with high porosity and a massive internal surface area [1,2,3]. These properties and the extraordinary diversity of their organic and inorganic building units make MOFs highly relevant in applications such as catalysis, sensors, batteries, biomedicine, and food safety [4,5,6,7,8] Due to their synthetic versatility, long-range order, rich host–guest chemistry, uniform pore size, and high surface area, MOFs are well-suited for the adsorption of a wide range of anthropogenic hazardous pollutants including NOx, SOx, CO, H2 S, NH3 , HCN, volatile organic compounds (VOCs), and polycyclic aromatic compounds (PAHs). Notwithstanding, MOF integration into devices is still a challenging task because most synthesis takes place inside sealed glass tubes under solvothermal conditions, yielding very insoluble powders formed by randomly aggregated crystallites making it impossible to apply in most of the currently available technologies In this context, much of the present research focuses on developing MOF processing methods [12]. The stability of these pellets was evaluated in terms of temperature and humidity
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