Fabrication of Metal–Organic Framework/Polymer Composites via a One-Pot Solvent Crystal Template Strategy

Abstract

Metal–organic framework (MOF)/polymer composites combining advantages of both materials have received significant attention in the recent years. However, the complexity and inefficiency of the current fabrication approaches have hindered their further development. Herein, we demonstrate a facile one-pot solvent crystal template strategy to efficiently fabricate ZIF-8/polyurethane (PU) composites. This method eliminated the pre-synthesis and purification of MOFs, thus greatly simplifying the fabrication process. Moreover, the solvent crystal template introduced macropores in the polymer matrix, which generated a hierarchically porous structure to facilitate the molecular diffusion in the composite. The obtained ZIF-8/PU composites exhibited an accelerated dye adsorption rate constant of 1.89 × 10–3 g mg–1 min–1, which was 2.6 times higher than that of MOF powders. The Langmuir isotherm study further confirmed favorable adsorption of dye molecules with a maximum adsorption capacity of 18.1 mg g–1.

Bamboo charcoal fused with polyurethane foam for efficiently removing organic solvents from wastewater: experimental and simulation

“…As shown in the Fig. 4b, BC/PU-5 foam composites had selective adsorption on these OSs, which may be due to the fact that the density and viscosity of the solvent itself had a significant impact on the adsorption efficiency (Chen et al 2021). The results showed that BC/PU foam composites exhibited excellent adsorption properties for these OSs, among which the adsorption capacities of n-hexane, chlorobenzene and 1,2-dichloroethane were 23.6 g g −1 , 18.1 g g −1 and 16.5 g −1 , respectively.…”

Metal–organic frameworks on versatile substrates

“…354 and 355. Furthermore, other polymers have also been studied, such as rubber, 356 polydopamine, 357,358 acrylic acid, 359,360 polytetrafluoroethylene (PTFE), 361,362 cyclic olefin copolymer (COC), 363 polyvinyl alcohol (PVA), 364 GCE and polylactic acid (PLA), 365 polypropylene, 366,367 polyvinyl chloride, 368 poly (sodium 4-styrenesulfonate), 369 poly(MMA- co -EDMA) membranes, methyl methacrylate (MMA) and ethylene glycol dimethacrylate (EDMA), 370 polyurethane, 371 polyethylenimine, 372 and aerogels. 373…”