Advanced Membrane Research Articles

Acoustic Transmitted Decellularized Fish Bladder for Tympanic Membrane Regeneration

Developing advanced tissue-engineered membranes with biocompatibility, suitable mechanical qualities, and anti-fibrotic and anti-inflammatory actions is important for tympanic membrane (TM) repair. Here, we present a novel acoustically transmitted decellularized fish swim bladder (DFB) loaded with mesenchymal stem cells (DFB@MSCs) for TM perforation (TMP) repair. The DFB scaffolds are obtained by removing the cellular components from the original FB, which retains the collagen composition that favors cell proliferation. Benefitting from their spatially porous structures and excellent mechanical properties, the DFB scaffolds can provide a suitable microenvironment and mechanical support for cell growth and tissue regeneration. In addition, by loading mesenchymal stem cells on the DFB scaffolds, the resultant DFB@MSCs system exhibits remarkable anti-fibrotic and anti-inflammatory effects, together with the ability to promote cell migration and angiogenesis. In vivo experiments confirm that the prepared DFB@MSCs scaffolds can not only alleviate inflammatory response caused by TMP but also promote new vessel formation, TM repair, and hearing improvement. These features indicate that our proposed DFB@MSCs stent is a prospective tool for the clinical repair of TM.

Esterified Chlorine-Resistant Nanofiltration Membranes with Enhanced Removal of Disinfection Byproducts for Efficient Water Purification.

The permeance-selectivity trade-off and chlorine sensitivity of conventional polyamide membranes limit further efficiency improvement and cost reduction of nanofiltration (NF) processes for drinking water treatment. To overcome these challenges, this study proposed a reconstruction-esterification strategy for the development of advanced NF membranes. Results showed that the combination of Na3PO4 solution post-treatment and polyol molecule grafting generated a thinner active layer with smaller and more uniform pores. More importantly, the critical role of alkaline post-treatment in reducing the residual amine groups of polyamide layers was revealed, which enhanced the chlorine resistance of membranes jointly with the effect of surface esterification. In comparison with the surface water purification performance of several commercial NF membranes, the obtained esterified membrane showed excellent selectivity between natural organic matter and salts, along with a reasonable water permeance. Moreover, the higher and stable removal capacity of the esterified membrane for disinfection byproducts and their precursors demonstrated its application advantage in the potential chlorination-NF-coupled process. The developed chlorine-resistant membrane and initially attempted NF filtration of chlorinated water in this study can help promote process innovation and highlight more benefits of NF technology for drinking water treatment.

Advanced Adaptive Protein Membrane with Super-High Flux and Precise Molecular Sieving of Dyes from Salts.

Precise separation of small organic molecules and electrolyte salts is critical for various industrial processes, necessitating advanced membranes with uniform pores. Proteins, as one typical nature polymer having the exactly same structure and molecular weight, offer a promising material for making such membranes. Here, hemoglobin (BHb) and lysozyme (Lyz) are utilized to fabricate precise nanofiltration membranes through amyloid-like co-assembly, triggered by Tris(2-carboxyethyl) phosphine. Molecular dynamics simulations reveal that BHb intercalates between Lyz molecules, enhancing tight assembly and reducing defects. The Lyz/BHb membrane exhibits a high void volume of 27.2% and achieves an exceptional permeance of 335 Lm-2h-1bar-1. Amazingly, the Lyz/BHb membrane achieves ultra-selective molecular sieving of dyes and salts with an unparalleled high separation factor of 1.25 × 103 for the NaCl/Brilliant blue. The unique adaptive separation layer is formed by anchoring dye molecules into the larger pores and thus narrowing down the pore size distribution and enhancing electrostatic repulsion, endowing the membrane with a distinctive molecular sieving of dyes and salts. This study offers valuable insights to finely tailor the pore structure of the membrane by co-assembly of proteins and to significantly enhance the membrane perm-selectivity by creating an adaptive protein separation layer with a unique molecular sieving property.

Stereochemical tuning, post-synthesis crosslinking and quaternizing to tune the membrane performance of ultra-stable polyamine nanofiltration membranes

Solvent resistant and pH-stable nanofiltration membranes play a crucial role in solvent or water reuse across various industries, including pharma, chemical, dairy and mining, where stringent pH conditions and chemical stability are imperative. Previous research introduced a chlorine-resistant top-layer for nanofiltration membranes, using 1,2,4,5-tetra(bromomethyl)benzene and 1,2-diaminocyclohexane, with also exceptional stability at extreme pH values and a broad solvent resistance thanks to its crosslinked nature. To further optimize this remarkably stable and versatile membrane material, the unique property of 1,2-diaminocyclohexane, i.e. its stereochemistry, is employed here to manipulate membrane properties through diastereomerism and enantiomeric excess. Filtration experiments employing different 1,2-diaminocyclohexane isomers revealed significant variations in membrane performance, emphasizing the impact of stereochemistry on separation performance. Adjusting the enantiomeric excess of 1,2-diaminocyclohexane resulted in notable changes in membrane permeability and rejection, highlighting the general power of stereochemical control in membrane synthesis. Additionally, post-synthesis modifications, including further crosslinking and quaternization, allowed to tune the membrane structure and performance in both aqueous and solvent media, offering opportunities for optimization towards specific applications. SEM and XPS providing insights into membrane morphology and composition, confirmed the influence of stereochemistry and post-synthesis modifications on membrane properties. These findings demonstrate the efficacy of stereochemistry manipulation and post-synthesis techniques in tailoring pH-stable and solvent resistant nanofiltration membranes for specific applications, paving the way for advanced membrane design.

Convenient preparation of inexpensive sandwich-type poly(vinylidene fluoride)/molecular sieve/ethyl cellulose mixed matrix membranes and their effective pre-exploration for the selective separation of CO2 in large-scale industrial utilization

Due to its high methane content, biogas is considered a potential replacement for natural gas as a clean and renewable energy source for future large-scale applications. In addition to CH4 (50–80%), biogas also includes CO2 (20–40%), N2 (0–5%), and other gases. Efficient capture and separation of CO2 not only enhances the calorific value of biogas but also aids in reducing greenhouse gas emissions. Utilizing membrane separation technology is an effective method for separating and capturing CO2 and N2. This technology is renowned for its controllability and efficiency. Here, a variety of ternary mixed matrix membranes consisting of poly(vinylidene fluoride)/molecular sieve/ethyl cellulose were successfully prepared using a simple layer-by-layer coating process. Among them, the porous polyvinylidene difluoride (PVDF) membrane serves as the bottom support layer, the molecular sieve (Titanate molecular sieve (TS-1) and Zeolite Socony Mobil-5 (ZSM-5)) acts as the middle selective layer, and ethyl cellulose (EC) forms the top fixed layer. These membrane materials were used in an attempt to efficiently separate CO2 from a CO2/CH4 gas mixture with a 1:1 ratio and a CO2/N2 gas mixture with a 1:1 ratio. It is encouraging to note that the PVDF/ZSM-5/EC mixed matrix membrane (with 10% ZSM-5), which is the most cost-effective among the ternary mixed matrix membranes, exhibited the best gas separation performance. For a mixture of CO2 and CH4 gases, the CO2 permeability was 891.23 Barrer, and the CO2/CH4 selectivity was 12.92. Its gas permselectivity exceeds the Robeson 2008 line. For the CO2 and N2 gas mixture, the CO2 permeability is 316.39 Barrer, and the CO2/N2 selectivity is 21.85. It exceeds the Robeson 1991 line for gas permselectivity. Although the PVDF/ZSM-5/EC mixed matrix membrane may not be highly effective in separating CO2 from a mixture of CO2 and N2 (in comparison to CO2/CH4 mixture gases), given the gas composition in biogas and natural gas, it is reasonable to conclude that our PVDF/ZSM-5/EC mixed matrix membrane is well-suited for the selective separation of CO2. This experiment is an important exploration for us to understand the transition of advanced membranes to practical applications. It lays a solid foundation for the production of PVDF/ZSM-5/EC ternary mixed matrix membranes at the lowest cost and for large-scale application in the field of biogas and natural gas purification, as well as greenhouse gas treatment from coal-fired power plants (CO2 selective separation).

Coupling Cu2O clusters and imine-linked COFs on microfiltration membranes for fast and robust water sterilization

As bacterial contamination crises escalate, the development of advanced membranes possessing both high flux and antibacterial properties is of paramount significance for enhancing water sterilization efficiency. Herein, an ultrathin layer of TbPa (an imine-linked covalent organic framework) and nanosized Cu2O clusters, sequentially deposited onto polyethersulfone membranes, demonstrate exceptional water flux performance, reaching a permeance level of 16000 LHM bar−1. The deposited TbPa, generating uniformly distributed reduction sites under illumination, facilitates the uniform formation of Cu2O clusters. Furthermore, these anchored Cu2O clusters significantly optimize electron transport within the ultra-thin layer of TbPa, thereby enhancing the performance of the membrane in generating reactive oxygen species (ROS). Consequently, this membrane achieves a flux recovery rate exceeding 98.6% for flux losses caused by bacterial fouling and maintains consistent performance over 10 cycles. This work presents an effective strategy for accessing bactericidal membranes and provides insights into efficient and mild water sterilization.

Modulating Built‐In Electric Field Strength in Ru/RuO2 Interfaces through Ni Doping to Enhance Hydrogen Conversion at Ampere‐level Current

AbstractImproving the alkaline hydrogen evolution reaction (HER) efficiency is essential for developing advanced anion exchange membrane water electrolyzers (AEMWEs) that operate at industrial ampere‐level currents. Herein, we employ density functional theory (DFT) calculations to identify Ni‐RuO2 as the leading candidate among various 3d transition metal‐doped M‐RuO2 (where metal M includes Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, and Zn). The incorporation of Ni atoms facilitates the partial reduction of RuO2, resulting in the formation of a Ni−Ru/RuO2 interface having a significant built‐in electric field (BIEF) during electrochemical reactions. The resulted BIEF enhances electron transfer across the interface, which is critical in lowering energy barriers and accelerating the hydrogen evolution reaction (HER) kinetics. As a result, the Ni‐RuO2 catalyst exhibits an overpotential of 134 mV at 1 A cm−2 and a low Tafel slope of 20.85 mV dec−1, with just 0.03 mg cm−2 of Ru loading. The highly effective BIEF, therefore, plays a pivotal role in the catalyst‘s remarkable performance, allowing the Ni‐RuO2‐based AEMWE to require only 1.71 V to maintain stable operation at 1 A cm−2 over a 1000‐hour period.

In‐Situ Formation of Three‐Dimensional Network Intrinsic Microporous Ladder Polymer Membranes with Ultra‐High Gas Separation Performance and Anti‐Trade‐Off Effect

AbstractThe global quest for clean energy and sustainable processes makes advanced membrane extremely attractive for energy‐intensive industrial gas separations. Here, we disclose a series of ultra‐high‐performance gas separation membranes (PIM‐3D‐TB) from novel network polymers of intrinsic microporosity (PIM) that combine the advantages of solution processible PIM and small pore size distribution (PSD) of porous organic polymers (POP), which was synthesized by in situ copolymerization of triptycene‐2,6‐diamine as linear part and triptycene‐2,6,13(14)‐triamine (TTA) as crosslinker. The resulting PIM‐3D‐TB membranes demonstrated outstanding separation properties that outperformed the latest trade‐off lines for H2/CH4 and O2/N2. They also showed an anti‐trade‐off effect by simultaneously enhancing gas permeability and gas‐pair selectivity with increasing TTA content. The TTA crosslinking node increased the microporosity, and, shifted the PSD from the ultramicropore (<7 Å) toward the more size sieving submicropore (<4 Å) region. The post‐treated TTA‐75 displayed an exceptional H2 permeability of 8000 Barrer and H2/CH4 selectivity of 208. These PIM‐3D‐TB membranes and their design protocol have unparalleled potential in the next generation of membranes for hydrogen purification and air separations.

In-Situ Formation of Three-Dimensional Network Intrinsic Microporous Ladder Polymer Membranes with Ultra-High Gas Separation Performance and Anti-Trade-Off Effect.

The global quest for clean energy and sustainable processes makes advanced membrane extremely attractive for energy-intensive industrial gas separations. Here, we disclosed a series of ultra-high-performance gas separation membranes (PIM-3D-TB) from novel network polymers of intrinsic microporosity (PIM) that combine the advantages of solution processible PIM and small pore size distribution (PSD) of porous organic polymers (POP), which was synthesized by in situ copolymerization of triptycene-2,6-diamine as linear part and triptycene-2,6,13(14)-triamine (TTA) as crosslinker. The resulting PIM-3D-TB membranes demonstrated outstanding separation properties that outperformed the latest trade-off lines for H2/CH4 and O2/N2. They also showed an anti-trade-off effect by simultaneously enhancing gas permeability and gas-pair selectivity with increasing TTA content. The TTA crosslinking node increased the microporosity, and, shifted the PSD from the ultramicropore (<7 Å) toward the more size sieving submicropore (<4 Å) region. The post-treated TTA-75 displayed an exceptional H2 permeability of 8000 Barrer and H2/CH4 selectivity of 208. These PIM-3D-TB membranes and their design protocol have unparalleled potential in the next generation of membranes for hydrogen purification and air separations.

Orientation-Dependent Anisotropic Desalination by Assembled Zeolite Nanotube Membranes.

Porous nanomaterials have shown great promise in many desalination applications. Zeolite nanotubes, featuring abundant but inhomogeneous nanopores on their surface, have been recently synthesized in experiments; however, their capacity for desalination is not yet understood. In this work, we use molecular dynamics simulations to investigate the capability of assembled zeolite nanotube membranes to perform in desalination applications due to their inherent multiscale porous properties. Two different membrane assemblies are examined to determine the effect of membrane orientation on desalination performance. Interestingly, we find that zeolite nanotube membranes present anisotropic desalination behavior, which is directly dependent on the assembled orientation of the zeolite nanotubes. Specifically, directing the transport through the axial channels of the nanotubes results in a water permeability of 59.8 L/cm2/day/MPa and 88% ion rejection. However, when the membrane is rotated 90° and the flow is directed perpendicular to the tube axis, the permeability drops to 22.3 L/cm2/day/MPa, but 100% ion rejection is achieved. This difference is attributed to the multiscale pore dimensions of the zeolite nanotube; that is, they possess large pores (a diameter of 3 nm) along the axial channel direction, but smaller pores (a diameter of 0.25 nm) along the direction perpendicular to the tube axis. The ion rejection capabilities are further verified by quantifying the free energy barriers to transport obtained via umbrella sampling simulations. Therefore, our findings demonstrate the orientation-dependent, anisotropic desalination performance in assembled zeolite nanotube membranes for the first time, which could be useful in designing future advanced desalination membranes.

Modulating Built-In Electric Field Strength in Ru/RuO2 Interfaces through Ni Doping to Enhance Hydrogen Conversion at Ampere-level Current.

Improving the alkaline hydrogen evolution reaction (HER) efficiency is essential for developing advanced anion exchange membrane water electrolyzers (AEMWEs) that operate at industrial ampere-level currents. Herein, we employ density functional theory (DFT) calculations to identify Ni-RuO2 as the leading candidate among various 3d transition metal-doped M-RuO2 (where metal M includes Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, and Zn). The incorporation of Ni atoms facilitates the partial reduction of RuO2, resulting in the formation of a Ni-Ru/RuO2 interface having a significant built-in electric field (BIEF) during electrochemical reactions. The resulted BIEF enhances electron transfer across the interface, which is critical in lowering energy barriers and accelerating the hydrogen evolution reaction (HER) kinetics. As a result, the Ni-RuO2 catalyst exhibits an overpotential of 134 mV at 1 A cm-2 and a low Tafel slope of 20.85 mV dec-1, with just 0.03 mg cm-2 of Ru loading. The highly effective BIEF, therefore, plays a pivotal role in the catalyst's remarkable performance, allowing the Ni-RuO2-based AEMWE to require only 1.71 V to maintain stable operation at 1 A cm-2 over a 1000-hour period.

Volatile Sieving Using Architecturally Designed Nanochannel Lamellar Membranes in Membrane Desalination.

Thermally driven membrane desalination processes have garnered significant interest for their potential in the treatment of hypersaline wastewater. However, achieving high rejection rates for volatiles while maintaining a high water flux remains a considerable challenge. Herein, we propose a thermo-osmosis-evaporation (TOE) system that utilizes molecular intercalation-regulated graphene oxide (GO) as the thermo-osmotic selective permeation layer, positioned on a hydrophobic poly(vinylidene fluoride) fibrous membrane serving as the thermo-evaporation layer. By carefully constructing architectural interlaminar nanochannels of GO membranes via simultaneously confining small molecules to enlarge the interlayer spacing and incorporating polymers within the GO interlayers to create a dense network, the resultant demonstrates a rejection rate of 100% for NaCl and 97.41% for volatile phenylamine, with a water permeance of 63.80 L m-2 h-1 at a temperature difference of 40 °C, outperforming previously reported GO-based membranes. Simulation and calculation results reveal that the polymer network between the GO interlayers facilitates the high-efficiency separation of nonvolatile ions and volatile molecules, while the enlarged channels reduce vapor diffusion resistance. This study provides valuable insights for the design of advanced membranes and serves as inspiration for the continued development of the TOE system for complex hypersaline wastewater treatment.

Imine-Linked 3D Covalent Organic Framework Membrane Featuring Highly Charged Sub-1nm Channels for Exceptional Lithium-Ion Sieving.

Coupling ion exclusion and interaction screening within sub-nanoconfinement channels in novel porous material membranes hold great potential to realize highly efficient ion sieving, particularly for high-performance lithium-ion extraction. Diverse kinds of advanced membranes have been previously reported to realize this goal but with moderate performance and complex operations gained. Herein, these issues are circumvented by preparing the consecutive and intact imine-linked three-dimensional covalent organic framework(i.e., COF-300) membranes via a simple solvothermal approach and employing the intrinsically interconnected sub-1nm one-dimensional channels for exceptional lithium-ion sieving. The synthesized membranes with highly charged angstrom scale channels of ≈0.78nm achieve an excellent Li+ permeance (0.123mol m-2 h-1) with an ultrahigh Li+/Mg2+ of 36 in the binary system. The experimental measurement and theoretical calculation reveal that a channel size right exactly between Li+ and Mg2+ enables restricted Mg2+ penetration. Meanwhile, the ion affinity interaction screening with imine groups further strengthens the fast Li+ permeability but severely suppresses the Mg2+ passage. In particular, the synthesized three-dimensional covalent organic framwork membranes also have a remarkable separation performance during a long-term operation test without sacrificing trade-off, demonstrating chemistry stability and mechanical integrity under the high-salinity aqueous environment.

Tailoring membrane technology with galactomannan for enhanced biocompatibility and antibacterial action

In this study, we elaborated advanced asymmetric membranes using polyvinyl alcohol (PVA) and a galactomannan (GA) derived from Delonix regia seeds, a blend known for its biocompatibility properties. These membranes, crosslinked with sulfosuccinic acid (SSA), exhibited remarkable enhancements in various crucial aspects for biomedical applications, in particular provides antibacterial properties. The incorporation of GA leads to the formation of globular regions, enhancing crosslinking and swelling properties. Increasing GA content results in membranes with enhanced biodegradation, reduced mechanical resistance, and increased elongation at break. The chemical composition of these membranes actively stimulates the metabolism of fibroblasts, osteoblasts, and to a lesser extent, monocytes, promoting cell proliferation particularly at GA contents between 10 and 20 %. Notably, the membrane containing 20 wt% GA demonstrates anti-inflammatory effects by reducing MCP-1 cytokine secretion without compromising tissue repair capacity, as TGF-ß secretion remains unaffected in human monocytes. This multifaceted approach underscores the potential of these membranes in biomedical applications, particularly in wound healing and tissue engineering.

High-performance anion exchange membrane fuel cells and zinc-air batteries enabled by a hierarchically porous hollow Fe/N/C aerogel catalyst

Currently, the development of Fe/N/C catalysts are attracting more and more attention, due to their exciting potential applications in advanced anion-exchange membrane fuel cells (AEMFCs) and zinc-air batteries (ZABs). Amongst,...

Current Status and Prospects of Direct Hydrogen Production from Seawater in China

This paper summarizes the current research status and future outlook of direct hydrogen production technology from seawater in China. With the growth of global energy demand and prominent environmental problems, hydrogen energy has been attracting attention as a kind of clean energy. The research on direct hydrogen production from seawater in China involves various fields such as electrolysis of water, photoelectrochemistry, electrocatalysis, membrane technology and polygeneration technology, and has made progress in demonstration projects, joint test bases, system integration and optimization, and industrial chain development. Technology application scenarios include offshore oil platforms, coastal islands, ocean development and protection, emergency energy supply and industrial parks. Looking ahead, China will focus on technology development priorities such as high-efficiency catalysts, advanced membrane technology, intelligent control systems, optimization of multi-generation technology, application of new energy integration technology, exploration of low-cost materials and improvement of seawater pretreatment technology. At the same time, it will promote the large-scale application and industrialization of seawater direct hydrogen production technology by constructing large-scale demonstration projects, perfecting industrial chain, expanding policy support and financing channels, strengthening international cooperation and technical exchanges, building human resources, as well as market promotion and application scenario expansion.

Machine Learning-Aided Inverse Design and Discovery of Novel Polymeric Materials for Membrane Separation.

Polymeric membranes have been widely used for liquid and gas separation in various industrial applications over the past few decades because of their exceptional versatility and high tunability. Traditional trial-and-error methods for material synthesis are inadequate to meet the growing demands for high-performance membranes. Machine learning (ML) has demonstrated huge potential to accelerate design and discovery of membrane materials. In this review, we cover strengths and weaknesses of the traditional methods, followed by a discussion on the emergence of ML for developing advanced polymeric membranes. We describe methodologies for data collection, data preparation, the commonly used ML models, and the explainable artificial intelligence (XAI) tools implemented in membrane research. Furthermore, we explain the experimental and computational validation steps to verify the results provided by these ML models. Subsequently, we showcase successful case studies of polymeric membranes and emphasize inverse design methodology within a ML-driven structured framework. Finally, we conclude by highlighting the recent progress, challenges, and future research directions to advance ML research for next generation polymeric membranes. With this review, we aim to provide a comprehensive guideline to researchers, scientists, and engineers assisting in the implementation of ML to membrane research and to accelerate the membrane design and material discovery process.

Turing covalent organic framework membranes via heterogeneous nucleation synthesis for organic solvent nanofiltration.

Although covalent organic frameworks (COFs) demonstrate notable potential for developing advanced separation membranes, contemporary COF membranes still lack controlled stacking and highly efficient sieving. Here, Turing-architecture COF membranes were constructed by engineering a reaction-diffusion assembly process via heterogeneous nucleation synthesis with tannic acid (TA). TA covalently binds with amine monomers to form a composite precursor with increased reactivity and decreased diffusivity. This altered the pathway of Schiff base reactions with aldehyde monomers, fulfilling suitable reaction-diffusion conditions, and ultimately formed the labyrinthine stripe or spot-patterned Turing COF film with controlled stacking and uniform pore structure. This endows our COF membrane with highly efficient molecule sieving ability for organic solvent nanofiltration while exhibiting a flux that is 621% greater than that of commercial membranes. Thus, this study provides a paradigm for the in situ synthesis of highly efficient COF membranes for diversely sustainable separations.

Advanced approaches to microplastic removal in landfill leachate: Advanced oxidation processes (AOPs), biodegradation, and membrane filtration

Advanced approaches to microplastic removal in landfill leachate: Advanced oxidation processes (AOPs), biodegradation, and membrane filtration

Biomineralized metal-organic framework membrane with high-crystallinity for ultrafast molecular separation

Metal-organic frameworks (MOFs) possess uniform and controllable pore structure, holding significant promise for the creation of efficient molecular separation membranes. Nevertheless, the challenge lies in constructing MOF membranes with high crystallinity and effectively utilizing their ordered crystal channels for molecular separation. Drawing inspiration from natural biomineralization processes, an in-situ trace graphene oxide (GO)-mediated crystallization strategy was adopted here to manipulate the crystallization of Zr-MOF (MIP-202(Zr)) membranes. GO nanosheets with abundant oxygen-containing groups could interact with the MOF precursor, furnishing numerous growth sites for the subsequent MOF growth, thereby facilitating the crystallization process during membrane formation within only 60 min. The resultant GO/MIP-202(Zr) composite membrane, composed of highly crystalline MIP-202(Zr) and trace amount of GO nanosheets, overcame the trade-off between MOF crystallinity and membrane formation. Benefiting from the interconnected pore structure, the resulting GO/MIP-202(Zr) membrane presented ultrahigh water permeability (1698.9 L m−2 h−1 bar−1), surpassing that of the pure GO membrane (258.9 L m−2 h−1 bar−1) by 6.5 times, while maintaining a comparable rejection for common dye molecules. Furthermore, the membrane displayed satisfied recyclability and structural stability. This study provides important perspectives for the fabrication of advanced membranes derived from MOFs aimed at enhancing molecular separation processes.