Construction of MOFs-based nanocomposite membranes for emerging organic contaminants abatement in water

Lu, Yuxin; Li, Xiang; Cagnetta, Giovanni; Wang, Bo

doi:10.1007/s11783-023-1689-x

Cited by 16 publications

(2 citation statements)

References 160 publications

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“…Membranes are well known as promising alternatives to conventional separation technologies (e.g., distillation, absorption, and pressure swing adsorption) due to their simple operation, being easy to scale-up, low energy cost, and easy maintenance [ 1 , 2 , 3 ]. In recent decades, membranes have been used in many fields, such as seawater desalination, wastewater treatment, and gas separation (e.g., O 2 /N 2 separation, H 2 recovery, natural gas sweetening, and more recently, CO 2 capture) [ 4 , 5 , 6 ].…”

Section: Introductionmentioning

confidence: 99%

Effects of Porous Supports in Thin-Film Composite Membranes on CO2 Separation Performances

Guo

Wei

et al. 2023

Membranes

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Despite numerous publications on membrane materials and the fabrication of thin-film composite (TFC) membranes for CO2 separation in recent decades, the effects of porous supports on TFC membrane performance have rarely been reported, especially when humid conditions are concerned. In this work, six commonly used porous supports were investigated to study their effects on membrane morphology and the gas transport properties of TFC membranes. Two common membrane materials, Pebax and poly(vinyl alcohol) (PVA), were employed as selective layers to make sample membranes. The fabricated TFC membranes were tested under humid conditions, and the effect of water vapor on gas permeation in the supports was studied. The experiments showed that all membranes exhibited notably different performances under dry or humid conditions. For polyacrylonitrile (PAN) and poly(ether sulfones) (PESF) membranes, the water vapor easily condenses in the pores of these supports, thus sharply increasing the mass transfer resistance. The effect of water vapor is less in the case of polyvinylidene difluoride (PVDF) and polysulfone (PSF), showing better long-term stability. Porous supports significantly contribute to the overall mass transfer resistance. The presence of water vapor worsens the mass transfer in the porous support due to the pore condensation and support material swelling. The membrane fabrication condition must be optimized to avoid pore condensation and maintain good separation performance.

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Section: Introductionmentioning

confidence: 99%

Effects of Porous Supports in Thin-Film Composite Membranes on CO2 Separation Performances

Guo

Wei

et al. 2023

Membranes

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“…Membranes and thin solid films with metal ions [ 32 , 33 , 34 ] have been used in many fields, such as seawater desalination, wastewater treatment and gas separation [ 35 , 36 , 37 ]. Most modern research into the use of membrane technologies for the separation of components is based on the use of mixed matrix membranes (MMMs) containing various additives, such as metal oxides, fullerene and its derivatives, MOFs, etc.…”

Section: Introductionmentioning

confidence: 99%

Holmium-Containing Metal-Organic Frameworks as Modifiers for PEBA-Based Membranes

Kuzminova,

Dmitrenko,

Salomatin

et al. 2023

Polymers

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Recently, there has been an active search for new modifiers to create hybrid polymeric materials for various applications, in particular, membrane technology. One of the topical modifiers is metal-organic frameworks (MOFs), which can significantly alter the characteristics of obtained mixed matrix membranes (MMMs). In this work, new holmium-based MOFs (Ho-MOFs) were synthesized for polyether block amide (PEBA) modification to develop novel MMMs with improved properties. The study of Ho-MOFs, polymers and membranes was carried out by methods of X-ray phase analysis, scanning electron and atomic force microscopies, Fourier transform infrared spectroscopy, low-temperature nitrogen adsorption, dynamic and kinematic viscosity, static and dynamic light scattering, gel permeation chromatography, thermogravimetric analysis and contact angle measurements. Synthesized Ho-MOFs had different X-ray structures, particle forms and sizes depending on the ligand used. To study the effect of Ho-MOF modifier on membrane transport properties, PEBA/Ho-MOFs membrane retention capacity was evaluated in vacuum fourth-stage filtration for dye removal (Congo Red, Fuchsin, Glycine thymol blue, Methylene blue, Eriochrome Black T). Modified membranes demonstrated improved flux and rejection coefficients for dyes containing amino groups: Congo Red, Fuchsin (PEBA/Ho-1,3,5-H3btc membrane possessed optimal properties: 81% and 68% rejection coefficients for Congo Red and Fuchsin filtration, respectively, and 0.7 L/(m2s) flux).

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Enhancing comprehension of water vapor on adsorption performance of VOC on porous carbon materials and its application challenge

Yao,

Wan,

et al. 2024

Front. Environ. Sci. Eng.

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Construction of MOFs-based nanocomposite membranes for emerging organic contaminants abatement in water

Cited by 16 publications

References 160 publications

Effects of Porous Supports in Thin-Film Composite Membranes on CO2 Separation Performances

Effects of Porous Supports in Thin-Film Composite Membranes on CO2 Separation Performances

Holmium-Containing Metal-Organic Frameworks as Modifiers for PEBA-Based Membranes

Enhancing comprehension of water vapor on adsorption performance of VOC on porous carbon materials and its application challenge

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