Preparation of porous monoliths via CO₂‐in‐water HIPEs template and the in situ growth of metal organic frameworks on it for multiple applications

Abstract

Monolithic porous copolymers with 3D structure were prepared via CO 2 -in-water high internal phase emulsions template by graft copolymerization of sodium methacrylate (MAANa) on to methyl cellulose (MC) backbone. The yielded copolymer monoliths are characterized by Fourier transform infrared spectra, scanning electron microscopy (SEM), and mechanical instrument, the swelling degree of MC-g-PMAANa monoliths with different crosslinker in diverse pH were investigated. The adsorption performance of monolith to Cu(II) were conducted to explore its adsorption capacity to heavy metal ions from the wastewater. Then, a strategy of in situ growth of metal-organic frameworks (MOFs) on MC-g-PMAANa that adsorbed with metal ions was proposed first.The X-ray powder diffraction, SEM, and Brunauer-Emmett-Teller (BET) surface area result of MC-g-PMAANa/MOFs composites indicated that the MOFs nanoparticles were grown uniformly on the monolith wall without destroying its original 3D porous structure. Compared with MOFs nanoparticle, MC-g-PMAANa/MOFs composites have advantages of easy operation and handle, which more conform to practical application. Furthermore, the antibacterial activity of MC-g-PMAANa/MOFs was evaluated by disk agar diffusion and optical density methods. In addition, MC-g-PMAANa/Cu-BTC composite was applied to dye adsorption, which has proved the underlying application of such composites in dye removal. K E Y W O R D Shigh internal phase emulsions, in situ growth, metal organic frameworks, sodium methacrylate

2D nanomaterial-based 3D network hydrogels for anti-infection therapy

“…MOFs find applications in diverse fields such as catalysis, gas storage, biomedical drug delivery, and bioimaging. 75–81 The porous structure of an MOF can be used to construct 2N3Hs with antibacterial functions by adsorbing metals such as Ag and copper (Cu). For instance, Lee's group synthesized a MOF-based antibacterial hydrogel through photopolymerization in a PEG hydrogel matrix, which utilized the toxicity of Cu, cobalt (Co), and Zn to eliminate bacteria efficiently.…”

“…Copyright 2021, American Chemical Society. (f) Schematic diagram of the MC-g-PMAANa copolymer 79. Copyright 2020, John Wiley & Sons Ltd.…”

Preparation and Mercury Removal Performance of Mg-MOF-74 Composites

“…Combined with the characterization results, the Mg-MOF-74(1) sample was used as the raw material for the preparation of MOF-based composites. According to the synthesis methods of MOF composites in references [14,15], combined with the microscopic characteristics of Mg-MOF-74 and biochar, three composite preparation methods were proposed: co-pyrolysis method, sol-gel method and in situ growth method. As the co-pyrolysis method involved the physical mixing of Mg-MOF-74 and FeCeCu/BC, the physical mixing method was also studied as a composite method.…”