High-aspect ratio zeolitic imidazolate framework (ZIF)-8 nanoplates mixed matrix membrane for hydrogen separation
발표자
()
초록
내용
High-aspect ratio morphology is beneficial for selective materials for gas separation. By using high-aspect ratio planar flake as a filler in mixed matrix membranes (MMMs), which is a composite membrane with incorporation of selective flakes in the polymer matrix, enhanced gas separation performance and mechanical properties are expected. We synthesized zeolitic imidazolate framework (ZIF)-8 nanoplates with an aspect ratio of 20 and hybridized with the 6FDA-DAM polymer to fabricate MMM. Since both filler and polymer show intrinsic separation properties on H2 and CO2 separation respectively, fabricated MMM showed enhanced separation performances on H2/CO2, H2/CH4, and CO2/CH4 separation. Moreover, ZIF-8 nanoplates incorporated MMM showed better performance compared to isotropic ZIF-8 particle incorporated MMM due to its high-aspect ratio morphology.