Mixed Matrix Membrane with Fluorinated MIL-101(Cr) Filler for the Separation of CO 2 and CH 4

Mixed matrix membranes (MMMs) incorporating metal–organic frameworks (MOFs) are attractive for molecular recognition and separations, but precisely engineering the MOF filler structure toward maximizing its inherent nanopore separation capability remains challenging. Here, we report a fluorination strategy to functionalize MIL-101 that synergistically optimizes its pore chemical environment and interfacial compatibility with the polymer matrix. Compared with the MIL-101/6FDA-DAM membrane, the in