Biocatalytic metal–organic framework membrane towards efficient aquatic micropollutants removal

Xu, Shu; Liang, Jieying; Mohammad, Munirah; Lv, Dongwei; Cao, Ying; Qi, Jingyao; Liang, Kang

doi:10.1016/j.cej.2021.131861

Cited by 34 publications

(15 citation statements)

References 43 publications

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“…[189][190][191][192][193] In order to continuously and effectively remove micro-pollutants from water, Xu et al prepared horseradish peroxidase (HRP)@ZIF-8 membranes that can be combined with enzyme catalysis. 194 Owing to the synergistic effect between the adsorption of the MOFs, catalytic oxidation by enzymes and membrane retention, this biocatalytic composite membrane can remove 98% of Bisphenol A (BPA) via continuous operation, and exhibits greater stability and reusability, even in the presence of proteolysis. As for hydrocarbons and their chlorinated substitutes, Wu et al prepared a ceramic hollow fiber NF membrane containing UiO-66 through the IP of UiO-66 and PA on a ceramic support, 195 achieving a greater than 96% removal of trichloroethylene (TCE) and trichlorobenzene (TCB).…”

Section: Removal Of Organic Contaminantsmentioning

confidence: 99%

MOFs meet membrane: application in water treatment and separation

Wang

et al. 2023

Mater. Chem. Front.

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Section: Removal Of Organic Contaminantsmentioning

confidence: 99%

MOFs meet membrane: application in water treatment and separation

Wang

et al. 2023

Mater. Chem. Front.

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“…The flexible network, tunable pore sizes, and rich physicochemical properties enable them to be promising materials for gas separation, capture and storage, catalysis, chemical sensors, and biomedicine [2][3][4][5]. MOFs have ultrahigh porosity (up to 90% free volume), an enormous internal surface area, and surface area (beyond 6000 m 2 /g 3 ), supporting their applications in molecules' adsorption, drug loading, and release [4,6,7]. The incorporation of MOFs into a polymer as mixed-matrix membranes provides a solution to manipulate and process the crystalline and robust MOFs [8,9].…”

Section: Introductionmentioning

confidence: 99%

Iodine Immobilized UiO-66-NH2 Metal-Organic Framework as an Effective Antibacterial Additive for Poly(ε-caprolactone)

et al. 2022

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Iodine has been widely used as an effective disinfectant with broad-spectrum antimicrobial potency. However, the application of iodine in an antibacterial polymer remains challenging due to its volatile nature and poor solubility. Herein, iodine immobilized UiO-66-NH2 metal-organic framework (MOF) (UiO66@I2) with a high loading capacity was synthesized and used as an effective antibacterial additive for poly(ε-caprolactone) (PCL). An orthogonal design approach was used to achieve the optimal experiments’ conditions in iodine adsorption. UiO66@I2 nanoparticles were added to the PCL matrix under ultrasonic vibration and evaporated the solvent to get a polymer membrane. The composites were characterized by SEM, XRD, FTIR, and static contact angle analysis. UiO-66-NH2 nanoparticles have a high iodine loading capacity, up to 18 wt.%. The concentration of iodine is the most important factor in iodine adsorption. Adding 0.5 wt.% or 1.0 wt.% (equivalent iodine content) of UiO66@I2 to the PCL matrix had no influence on the structure of PCL but reduces the static water angle. The PCL composites showed strong antibacterial activities against Staphylococcus aureus and Escherichia coli. In contrast, the same content of free iodine/PCL composites had no antibacterial activity. The difference in the antibacterial performance was due to the different iodine contents in the polymer composites. It was found that MOF nanoparticles could retain most of the iodine during the sample preparation and storage, while there was few iodine left in the free iodine/PCL composites. This study offers a common and simple way to immobilize iodine and prepare antibacterial polymers with low antiseptic content that would reduce the influence of an additive on polymers’ physical properties.

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“…For example, magnets can be used to recollect sorbents blended with magnetic additives [197,198] or immobilized catalysts or bio-enzymes can be used to adsorb and subsequently oxidize pollutants. [199][200][201] Ultimately, sorbent regeneration techniques must be considered to design energysmart, reusable and eco-friendly separation processes.…”

Section: Direct Stimulimentioning

confidence: 99%

Design Considerations for Next‐Generation Polymer Sorbents: From Polymer Chemistry to Device Configurations

Ouimet

Phillip

et al. 2022

Macro Chemistry & Physics

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Adsorption‐based separations have the potential to enhance the sustainability of established industrial processes and facilitate the adoption of new practices. They also provide ways to meet emerging needs in the isolation of resources from non‐traditional supplies and the remediation of hazardous environmental contaminants. In this regard, there are significant opportunities to advance both fundamental polymer science and engineering applications through next‐generation adsorbent systems. Here, after briefly reviewing the history, potential application space, and underlying physics of polymer sorbents, design considerations that connect macromolecular design with systems‐level functionality, are discussed. First, polymer processing conditions are discussed in terms of the final nano‐ and microscale structures produced. Subsequently, the macromolecular chemistry of the materials is analyzed with respect to the ability of the separations systems to have analyte‐specific binding. Finally, a similar analysis is performed regarding the desorption mechanism used to release the target solutes. In this way, the manuscript attempts to connect macromolecular architecture with polymer physics and materials processing to provide guidance on how these important interrelationships impact the ultimate performance of sorbent systems.

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Biocatalytic metal–organic framework membrane towards efficient aquatic micropollutants removal

Cited by 34 publications

References 43 publications

MOFs meet membrane: application in water treatment and separation

MOFs meet membrane: application in water treatment and separation

Iodine Immobilized UiO-66-NH2 Metal-Organic Framework as an Effective Antibacterial Additive for Poly(ε-caprolactone)

Design Considerations for Next‐Generation Polymer Sorbents: From Polymer Chemistry to Device Configurations

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