Synthesis of MILs metal–organic frameworks and applications for adsorption of H2O and CO2
摘要
Porous metalorganic frameworks (MOFs) have been regarded as promising candidates for a wide application in adsorption, catalysis and gas storage and separation, since they have high surface areas, adjustable pore structures and thermal stability to a greater extent than other traditional inorganic materials. Furthermore, functionalization of the frameworks can optimize the material properties and enhance the performance of a given application filed. As one of the water-stable MOFs, Materials Institute Lavoisier (MILs) framework materials exhibit diverse structure from metals and ligands, tailorable pore structure and surface functionality, which have been widely developed in water vapor harvesting and CO2 capture based on adsorption. In this review, a brief introduction of classification and structure of MILs (MIL-101(Cr), MIL-100(Fe) and MIL-53(Al)) is firstly presented. Then, different synthesis technologies of same kind of MIL including hydrothermal method, solvothermal approach and microwave-assisted route are summarized and compared in detail, highlighting the effect of reaction conditions such as synthesis methods, synthesis temperature, time, solvent, and additives, on particle crystallinity, morphology and porosity of MILs. Moreover, adsorption mechanism for water vapor and CO2 capture and related applications are thoroughly discussed to understand the factors affecting the adsorption ability. Finally, we provided some personal comments on the challenges facing these areas.
Graphical abstract