No abstract

be tuned over a wide range using appropriate building blocks. [6] The MOF properties can be further adjusted by introducing functional groups into the structure or by post synthesis modification. [7][8] Although several chemically robust and water stable MOFs have been presented to date, [9][10] a severe drawback of many MOF structure is its limited stability, especially toward exposure to water. Since water vapor is often present in various industrial processes, it must be taken into account when selecting MOF adsorbents and the limited waterstability is a hindering factor for many applications. [11][12] In previous works, it was shown that water vapor can corrode the MOF surface, hindering the guest molecule transport through the MOF pores, also known as surface barrier for mass transfer. The existence of surface barriers greatly hinders the application and development of MOFs. [13][14][15] Here, we explore the mass transfer of a probe molecule (toluene) in MOF films of four popular structures: HKUST-1, ZIF-8, UiO-66, and UiO-67. HKUST stands for

Dedicated to Prof. Dr. rer. nat. Ju ¨rgen Caro on the occasion of his 70th birthdayThe metal-organic framework (MOF) MIL-68(In)-NH 2 was tested for dye removal from wastewater and carbon capture gas separation. MIL-68(In)-NH 2 was synthesized as a neat, supported MOF thin film membrane and as spherical particles using pyridine as a modulator to shape the morphology. The neat MIL-68(In)-NH 2 membranes were employed for dye removal in cross-flow geometry, demonstrating strong molecular sieving. MIL-68(In)-NH 2 particles were used for electrospinning of poylethersulfone mixed-matrix membranes, applied in dead-end filtration with unprecedented adsorption values. Additionally, the neat MOF membranes were used for H 2 /CO 2 and CO 2 /CH 4 separation.

No abstract