MOF Processing by Electrospinning for Functional Textiles

Abstract

Metal-organic frameworks (MOFs) are well known for their outstanding sorption properties and therefore under consideration as new high performance adsorbents. [1] A lot of applications in different fields seem feasible. [2] Especially gas storage, [3] heterogeneous catalysis, [4] and separation/purification processes [5] are the fields under intense research and most mentioned in the literature. Describing exclusively the performance of the materials, only little attention is paid to the morphology and size of the particles, which is crucial for the different fields of applications. A few of the known MOF materials appear in form of small single crystals while often fine powders with particles on the lower micrometer scale are the product. For certain applications they have to be better processable. Methods under consideration, like pelletizing [6]

Multifunctional metal–organic frameworks: from academia to industrial applications

“…For instance, Norafin (in collaboration with Dresden Technical University) developed nonwoven materials from different fibres (such as PET, aramides, viscose and natural flax), which were coated with a polymeric binder (e.g., acrylate, latex, ethylene vinylacetate and aliphatic polyesterpolyurethane) to fix MOF particles at the fibre surface. 233 Immobilization of MOF particles was performed via electrospinning or direct chemical fixation, through MOF synthesis on the fibre surface or its simple entrapment in the void spaces within the fibres (Figures 19 and 20). Promising results using HKUST-1 and FeBTC have shown good performance for H 2 S, NH 3 and cyclohexane retention.…”

Seeded growth of ZIF-8 on the surface of carbon nanotubes towards self-supporting gas separation membranes

“…[8][9][10][11] Strategies to produce supported MOF thin lms and membranes face key engineering challenges, including the control and optimization of the interface between the scaffold and the MOF crystals, as well as the homogeneous control of the growth mechanisms in conned spaces to fully benet from the unique MOF properties. 10,[17][18][19] Recently, MOF crystals were also in situ grown and conned into carbon nanotubes (CNTs) providing an enhanced material for gas adsorption. 12,16 The growth of MOFs within a porous structure, as opposed to their incorporation into mixed matrix membranes, 2 was demonstrated to lead to the fabrication of membrane materials possessing enhanced mechanical stability and higher performance.…”

Fabrication of functional hollow microspheres constructed from MOF shells: Promising drug delivery systems with high loading capacity and targeted transport

“…Since the discovery of ZIFs, they have emerged as ideal candidates and have been studied extensively for biomedical applications131415. Among ZIF materials, ZIF-8 is the most frequently studied because of its exceptional chemical and thermal stability1617. ZIF-8, which is composed of Zn and 2-methylimidazole, has sufficiently large pore apertures for passing drug molecules.…”