Advanced Porous Materials in Mixed Matrix Membranes

Cheng, Youdong; Ying, Yunpan; Japip, Susilo; Jiang, Shanqun; Chung, Tai‐Shung; Zhang, Sui; Zhao, Dan

doi:10.1002/adma.201802401

Cited by 267 publications

(186 citation statements)

References 216 publications

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“…In light of the success of commercial ion-exchange resins and membranes, which cover manifold pore functionalization strategies and enable customized functional porous structures in specific applications, many research efforts have been devoted to the task-specific functionalization chemistry to anchor functional components on and/or in sophisticated porous channels via predesigned and postsynthetic modifications. [49,50] The optimized pore chemistry merges full merits of both facile transport pathway as well as available reactive sites, and therefore provides exceptional properties. These functionalizing strategies have exhibited the opportunities to explore the structure-property relationship of porous polymers and carbons.…”

Section: Introductionmentioning

confidence: 99%

Emerging Functional Porous Polymeric and Carbonaceous Materials for Environmental Treatment and Energy Storage

Zheng

Lin

Zhang

et al. 2019

Adv Funct Materials

206

118

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The demand for practical and cost-effective environmental treatment and energy storage materials is exploding. Porous polymeric and carbonaceous materials have attracted tremendous interest on account of their welldeveloped porosity and tunable surface chemistry. Functionalization of pore structures further enhances their properties for environmental treatment and energy storage. Herein, the procedures for functionalization of porous structures are introduced, including predesign and postsynthetic strategies. Subsequently, the important advancements of emerging porous polymers for environmental treatment in sorption (e.g., organic micropollutant adsorption, heavy metal ion removal, radionuclide extraction, and oil absorption) and membrane separation (e.g., aqueous micropollutant separation, organic solvent nanofiltration, desalination and pervaporation), as well as for energy storage ranging from the electrodes and separators of batteries to supercapacitor electrodes are highlighted. Moreover, given the combined merits of high intrinsic conductivity, porosity, and physicochemical stability, novel polymer-based porous carbons for energy storage are also highlighted. Key functionalization chemistry for each application is discussed and an in-depth understanding of the structure-property relationships of these functional porous materials is provided. Finally, the challenges and perspectives of emerging functional porous polymeric and carbonaceous materials for environmental treatment and energy storage are proposed.

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Section: Introductionmentioning

confidence: 99%

Emerging Functional Porous Polymeric and Carbonaceous Materials for Environmental Treatment and Energy Storage

Zheng

Lin

Zhang

et al. 2019

Adv Funct Materials

206

118

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show abstract

“…However, to fabricate such crystalline membranes free from defects is difficult. A common and simple strategy is the incorporation of microporous materials as fillers in the polymer matrix, forming mixed-matrix membranes (MMMs) 17 . These additives can in principle provide intrinsic molecular transport channels to facilitate the solvent permeability.…”

mentioning

confidence: 99%

Molecularly-porous ultrathin membranes for highly selective organic solvent nanofiltration

et al. 2020

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Engineering membranes for molecular separation in organic solvents is still a big challenge. When the selectivity increases, the permeability tends to drastically decrease, increasing the energy demands for the separation process. Ideally, organic solvent nanofiltration membranes should be thin to enhance the permeant transport, have a well-tailored nanoporosity and high stability in harsh solvents. Here, we introduce a trianglamine macrocycle as a molecular building block for cross-linked membranes, prepared by facile interfacial polymerization, for high-performance selective separations. The membranes were prepared via a two-in-one strategy, enabled by the amine macrocycle, by simultaneously reducing the thickness of the thin-film layers (<10 nm) and introducing permanent intrinsic porosity within the membrane (6.3 Å). This translates into a superior separation performance for nanofiltration operation, both in polar and apolar solvents. The hyper-cross-linked network significantly improved the stability in various organic solvents, while the amine host macrocycle provided specific size and charge molecular recognition for selective guest molecules separation. By employing easily customized molecular hosts in ultrathin membranes, we can significantly tailor the selectivity on-demand without compromising the overall permeability of the system.

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“…The nanofiber composites are usually nonwoven and in the form of membranes which, in this case, are generally known as mixed-matrix membranes (MMMs). MMMs have the advantage of possessing the physicochemical stability of ceramics and the easy formation of polymeric materials on top of high resistance to fouling; high thermal, chemical, and mechanical strength; wider pH and temperature range; and high permselectivity [ 32 , 33 ]. Nanoparticles can be self-assembled within the polymer matrix via the condensation and hydrolysis reaction of inorganic precursors [ 34 ].…”

Section: Types Of Electrospun Nanofiber Compositesmentioning

confidence: 99%

Progress on the Fabrication and Application of Electrospun Nanofiber Composites

et al. 2020

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Nanofibers are one of the most attractive materials in various applications due to their unique properties and promising characteristics for the next generation of materials in the fields of energy, environment, and health. Among the many fabrication methods, electrospinning is one of the most efficient technologies which has brought about remarkable progress in the fabrication of nanofibers with high surface area, high aspect ratio, and porosity features. However, neat nanofibers generally have low mechanical strength, thermal instability, and limited functionalities. Therefore, composite and modified structures of electrospun nanofibers have been developed to improve the advantages of nanofibers and overcome their drawbacks. The combination of electrospinning technology and high-quality nanomaterials via materials science advances as well as new modification techniques have led to the fabrication of composite and modified nanofibers with desired properties for different applications. In this review, we present the recent progress on the fabrication and applications of electrospun nanofiber composites to sketch a progress line for advancements in various categories. Firstly, the different methods for fabrication of composite and modified nanofibers have been investigated. Then, the current innovations of composite nanofibers in environmental, healthcare, and energy fields have been described, and the improvements in each field are explained in detail. The continued growth of composite and modified nanofiber technology reveals its versatile properties that offer alternatives for many of current industrial and domestic issues and applications.

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Advanced Porous Materials in Mixed Matrix Membranes

Cited by 267 publications

References 216 publications

Emerging Functional Porous Polymeric and Carbonaceous Materials for Environmental Treatment and Energy Storage

Emerging Functional Porous Polymeric and Carbonaceous Materials for Environmental Treatment and Energy Storage

Molecularly-porous ultrathin membranes for highly selective organic solvent nanofiltration

Progress on the Fabrication and Application of Electrospun Nanofiber Composites

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