Metal-organic frameworks-based mixed matrix pervaporation membranes for recovery of organics

Xu, Zehai; Liu, Chao; Xiao, Lulu; Meng, Qin; Zhang, Guoliang

doi:10.1016/j.advmem.2024.100092

Cited by 5 publications

(1 citation statement)

References 153 publications

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“…Here, we discuss the regulation of the crystal plane, surface properties, morphology, and defects of MOF membranes by polymers and how these adjustments affect the separation performance of the membranes. For MOF mixed-matrix membranes, the primary issue is poor interfacial compatibility [ 32 ]. To address these challenges, this section introduces methods and strategies for modifying both polymers and MOFs.…”

Section: Strategies For the Preparation Of Mof–polymer Membranesmentioning

confidence: 99%

Synergistic Construction of Sub-Nanometer Channel Membranes through MOF–Polymer Composites: Strategies and Nanofiltration Applications

Chen,

Tang,

Ding

et al. 2024

Polymers

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The selective separation of small molecules at the sub-nanometer scale has broad application prospects in the field, such as energy, catalysis, and separation. Conventional polymeric membrane materials (e.g., nanofiltration membranes) for sub-nanometer scale separations face challenges, such as inhomogeneous channel sizes and unstable pore structures. Combining polymers with metal–organic frameworks (MOFs), which possess uniform and intrinsic pore structures, may overcome this limitation. This combination has resulted in three distinct types of membranes: MOF polycrystalline membranes, mixed-matrix membranes (MMMs), and thin-film nanocomposite (TFN) membranes. However, their effectiveness is hindered by the limited regulation of the surface properties and growth of MOFs and their poor interfacial compatibility. The main issues in preparing MOF polycrystalline membranes are the uncontrollable growth of MOFs and the poor adhesion between MOFs and the substrate. Here, polymers could serve as a simple and precise tool for regulating the growth and surface functionalities of MOFs while enhancing their adhesion to the substrate. For MOF mixed-matrix membranes, the primary challenge is the poor interfacial compatibility between polymers and MOFs. Strategies for the mutual modification of MOFs and polymers to enhance their interfacial compatibility are introduced. For TFN membranes, the challenges include the difficulty in controlling the growth of the polymer selective layer and the performance limitations caused by the “trade-off” effect. MOFs can modulate the formation process of the polymer selective layer and establish transport channels within the polymer matrix to overcome the “trade-off” effect limitations. This review focuses on the mechanisms of synergistic construction of polymer–MOF membranes and their structure–nanofiltration performance relationships, which have not been sufficiently addressed in the past.

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Section: Strategies For the Preparation Of Mof–polymer Membranesmentioning

confidence: 99%

Synergistic Construction of Sub-Nanometer Channel Membranes through MOF–Polymer Composites: Strategies and Nanofiltration Applications

Chen,

Tang,

Ding

et al. 2024

Polymers

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Dehydration of bioethanol using novel polysulfone (PSF)/nonionic surfactants hybrid membranes

Ghorab,

Saljoughi,

Malekzadeh Dirin

2025

Separation and Purification Technology

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Enhanced Sodium Alginate Membranes Modified with Metal–Organic Frameworks Based on Zirconium for Energy-Efficient Isopropanol Dehydration by Pervaporation

Dubovenko,

Kuzminova,

Dmitrenko

et al. 2024

ACS Appl. Polym. Mater.

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The zirconium-based metal−organic framework (Zr-MOF) class presents promising modifiers with excellent water stability and adsorption ability for the development of pervaporation mixed matrix membranes (MMMs). Thus, in this study, the effect of the introduction of Zr-MOF MIL-140A with various ligands into sodium alginate (SA) was investigated in order to develop mixed matrix membranes with enhanced characteristics for pervaporation dehydration. The improved SA membrane characteristics were achieved by the variation of MIL-140A concentration (2−5 wt %), different ligands in its structure (MIL-140A-AcOH, MIL-140A-AcOH-EDTA), and CaCl 2 crosslinking. The prepared Zr-MOF, composites, and membranes were characterized using attenuated total reflectance-Fourier transform infrared spectroscopy, analysis of low-temperature nitrogen adsorption, scanning electron microscopy, atomic force microscopy, Xray diffraction analysis, thermogravimetric analysis, and contact angle and liquid uptake measurements. The transport properties of the membranes were tested in the pervaporation dehydration of isopropanol (IPA). The results from quantum chemical computational experiments were employed to explain the observed changes and interactions. It was shown that the modification of the SA matrix with these Zr-MOFs led to the improvement of the pervaporation performance, in particular the permeation flux, due to their unique porous structure, functional groups, and favorable interaction with components of the feed. The SA+MIL-140A(4%) membrane cross-linked with CaCl 2 exhibited the best transport characteristics in the pervaporation dehydration of isopropanol (12− 70 wt % water): the highest permeation flux of 200−540 g m −2 h −1 maintaining 99.99 wt % water content in the permeate.

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Metal-organic frameworks-based mixed matrix pervaporation membranes for recovery of organics

Cited by 5 publications

References 153 publications

Synergistic Construction of Sub-Nanometer Channel Membranes through MOF–Polymer Composites: Strategies and Nanofiltration Applications

Synergistic Construction of Sub-Nanometer Channel Membranes through MOF–Polymer Composites: Strategies and Nanofiltration Applications

Dehydration of bioethanol using novel polysulfone (PSF)/nonionic surfactants hybrid membranes

Enhanced Sodium Alginate Membranes Modified with Metal–Organic Frameworks Based on Zirconium for Energy-Efficient Isopropanol Dehydration by Pervaporation

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