Advanced Membranes最新文献_第3页

Flux melting of UiO-67 family metal-organic frameworks: the thin film processing and nanofiltration property UiO-67族金属有机骨架的熔炼：薄膜加工及纳滤性能

IF 9.5

Advanced Membranes

Pub Date : 2026-03-01 Epub Date: 2025-10-24 DOI: 10.1016/j.advmem.2025.100182

Wei-Long Li , Jiao-Rong Li , Guo-Qiang Li , Xiang Kun Cui , Wen-Long Xue , Ming Hao Li , Zhongfeng Li , Hongliang Dong , Chong-Qing Wan

Metal-Organic Frameworks (MOFs) have been demonstrated to be the perfect candidates of function materials for special specie separation. Although numerous MOFs, nearly 100,000 unique ones, have been explored, only several MOF-based membranes are reported because their lack of processability and grain boundary effects seriously limit their fabrication into thin film. This work discusses a strategy of flux melting, ‘borrowed from inorganic domain’, to prepare a MOF thin film via a simple heat-pressing process by using one meltable MOF and a non-meltable MOF. We observed the flux melting of the non-meltable Zr-MOFs and its meltable derivative modified by the binary ionic liquids, the proportion effect of each part on the melting, processability and film nanofiltration for dye molecules. The melt-quenched glass thin film possesses the network inherited from the pristine MOF via the melt, linker exchange and vitrification mechanism. The interesting pore recovery of MOF upon a solvent stimulation endows the film with pore size control (∼1.2 nm) on the dye molecule separation. A 99.88 % rejection rate and a permeability of 27.7 L/m²·h·bar for Congo red dye solution is observed, which is much better than that of analogous MOF membranes generally obtained through complicate processes.

金属-有机骨架（MOFs）已被证明是用于特殊物种分离的功能材料的理想候选者。尽管已经发现了许多mof，近10万种独特的mof，但由于缺乏可加工性和晶界效应严重限制了它们的薄膜制造，因此仅报道了几种mof基膜。本工作讨论了一种“借鉴无机领域”的熔剂熔炼策略，通过简单的热压工艺，利用一个可熔化的MOF和一个不可熔化的MOF制备MOF薄膜。观察了二元离子液体修饰的不可熔性zr - mof及其可熔性衍生物的熔剂熔炼过程，以及各组分对染料分子熔炼、加工性和膜纳滤的比例效应。熔融淬火玻璃薄膜通过熔体、连接剂交换和玻璃化机制继承了原始MOF的网络。在溶剂刺激下，MOF具有有趣的孔隙恢复特性，使膜在染料分子分离时具有孔径控制（~ 1.2 nm）。对刚果红溶液的截留率为99.88%，渗透率为27.7 L/m2·h·bar，远远优于一般通过复杂工艺制备的类似MOF膜。

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引用次数: 0

Poly (ether block amide) membranes with hyper-crosslinked polymer fillers for enhanced pervaporation of phenol aqueous solutions 具有超交联聚合物填料的聚醚嵌段酰胺膜，用于增强苯酚水溶液的渗透蒸发

IF 9.5

Advanced Membranes

Pub Date : 2026-03-01 Epub Date: 2025-10-28 DOI: 10.1016/j.advmem.2025.100184

Zhihao Huang , Chuanlong Li , Yuanyuan Sheng , Liqiu Yang , Haoli Zhou , Wanqin Jin

Pervaporation (PV) is considered one of the most industrially potential phenol wastewater treatment technologies because of its advantages such as high efficiency and without regeneration. PV membrane performance is a key factor that determines its industrial applicability. Here, polymer-filler-based mixed matrix membranes (MMMs) are proposed to enhance the membrane performance for pervaporation of phenol aqueous solutions. First, three hyper-crosslinked polymer (HCP) fillers were synthesized via the Friedel–Crafts reaction between benzyl alcohol (BA) and a penta-heterocyclic compound, such as furan (Fu), and analyzed by different characterizations. All the fillers exhibited desirable properties such as high phenol adsorption capacity and excellent hydrophobicity. Subsequently, different MMMs were fabricated by incorporating the HCP fillers into poly (ether block amide) (PEBA-2533) for the separation of phenol aqueous solutions. The Fu/BA-HCP@PEBA-2533 MMM was selected for further investigation as it afforded the highest separation factor of 72.2 and a flux of 2.07 kg/(m²·h) at 70 °C for the separation of a 1.5 wt% phenol aqueous solution. The diffusion and solubility coefficients were measured. The effects of different operating conditions on the membrane performance and long-term stability were studied, and the results for the pervaporation of phenol aqueous solutions were compared with previously reported data. Investigating the effects of diverse polymer fillers and their compatibility with polymers on the fabrication and performance of MMMs will be a prospective future research direction.

渗透蒸发（PV）因其效率高、无需再生等优点，被认为是最有工业潜力的苯酚废水处理技术之一。光伏膜的性能是决定其工业适用性的关键因素。本文提出了基于聚合物填料的混合基质膜（MMMs），以提高苯酚水溶液渗透蒸发的膜性能。首先，通过苯甲醇（BA）与呋喃（Fu）等五杂环化合物的Friedel-Crafts反应合成了三种超交联聚合物（HCP）填料，并对其进行了不同的表征分析。所有填料均具有较高的苯酚吸附能力和良好的疏水性。随后，将HCP填料掺入聚醚嵌段酰胺（PEBA-2533）中制备不同的MMMs，用于苯酚水溶液的分离。选择Fu/BA-HCP@PEBA-2533 MMM进行进一步的研究，因为它在70°C下对1.5 wt%苯酚水溶液的分离系数最高，为72.2，通量为2.07 kg/（m2·h）。测定了扩散系数和溶解度系数。研究了不同操作条件对膜性能和长期稳定性的影响，并将苯酚水溶液的渗透蒸发结果与已有报道的数据进行了比较。研究不同聚合物填料及其与聚合物的相容性对mm - mm材料的制备和性能的影响是未来的研究方向。

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引用次数: 0

Ultra-stable Ni-overdoped yttria-stabilized zirconia oxygen separation membranes for methane partial oxidation 甲烷部分氧化用超稳定镍掺杂钇稳定氧化锆氧分离膜

IF 9.5

Advanced Membranes

Pub Date : 2026-03-01 Epub Date: 2025-11-03 DOI: 10.1016/j.advmem.2025.100186

Yi Gao , Tengpeng Wang , Fangsheng Liu , Dongjie Fan , Xiaoyu Xie , Zhengmao Ye , Dehua Dong , Huanting Wang , Zongping Shao

Ceramic oxygen separation membranes have advantages over cryogenic distillation and pressure swing adsorption in terms of oxygen production. However, the application of ceramic membranes is restricted by membrane stability issues at high operation temperatures. This study develops ultra-stable oxygen separation membranes through the over-doping of Ni into yttrium-doped zirconia (NYSZ). The Ni doping amount reaches 18.1 mol%, and Ni dissolution substantially increases the electronic conductivity of the yttrium-doped zirconia membranes under both oxidizing and reducing atmospheres, which is as high as 0.96 S cm⁻¹. Accordingly, high oxygen permeation rates of up to 1.68 mL min⁻¹ cm⁻² at 800 °C were achieved, which are comparable with those of conventional perovskite membranes (3.53 mL min⁻¹ cm⁻²). The ultra-stable NYSZ membranes were confirmed with stable electrochemical reforming of methane for 310 h. Therefore, the robust NYSZ membranes demonstrate great potential in practical applications.

在制氧方面，陶瓷氧分离膜具有低温蒸馏和变压吸附的优点。然而，陶瓷膜的应用受到高温下膜稳定性问题的限制。本研究通过在掺钇氧化锆（NYSZ）中过量掺杂Ni来制备超稳定的氧分离膜。Ni掺杂量达到18.1 mol%，在氧化和还原气氛下，Ni的溶解均显著提高了钇掺杂氧化锆膜的电导率，最高可达0.96 S cm−1。因此，在800°C下实现了高达1.68 mL min - 1 cm - 2的高氧渗透率，这与传统钙钛矿膜（3.53 mL min - 1 cm - 2）相当。通过稳定的甲烷电化学重整310 h，证实了NYSZ膜的超稳定性。因此，坚固耐用的NYSZ膜在实际应用中显示出巨大的潜力。

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引用次数: 0

Gas separation performance of soluble PMDA-polyimides controlled by diamine isomerism and copolymerization 二胺异构和共聚控制可溶pmda -聚酰亚胺气体分离性能

IF 9.5

Advanced Membranes

Pub Date : 2026-03-01 Epub Date: 2025-10-30 DOI: 10.1016/j.advmem.2025.100174

Jing Wang , Guoke Zhao , Bo Chen , Gongqing Tang , Yiqun Liu , Pei Li

Two series of soluble polyimides based on pyromellitic dianhydride (PMDA) were synthesized and investigated for gas separation applications. The first series was prepared by reacting PMDA with 5(6)-1-(4-aminophenyl)-1,3,3′-trimethylindane (5(6)-DAPI). Two commercially available DAPI mixtures, designated as DAPI-1 and DAPI-2, containing 5-DAPI to 6-DAPI isomer ratios of 36:64 and 44:56, respectively, were employed. The results indicated that the higher structural distortion associated with 6-DAPI in PMDA-DAPI-1 demonstrated greater gas permeability but lower selectivity compared to PMDA-DAPI-2. The second series of polyimides utilized diethyl toluene diamine (DETDA). Particular emphasis was placed on polyimides obtained through the copolymerization of DETDA with either 2,4,6-trimethyl-1,3-diaminobenzene (DAM) or 1,5-diaminonaphthalene (NDA), at a diamino monomer ratio of 3:1. The PMDA-DETDA polyimide exhibited higher gas permeability but lower selectivity compared to copolyimide counterparts. Notably, DETDA-based polyimides exhibited CO₂/CH₄ separation performances approaching the 1991 Robeson upper bound under mixed gas conditions. Furthermore, two series of polyimides showed high glass transition temperatures (Tg) ranging from 461 °C to 534 °C, suggesting their suitability for high-temperature gas separation applications.

合成了两种以焦二甲基二酐（PMDA）为基料的可溶聚酰亚胺，并对其气体分离应用进行了研究。第一个系列是由PMDA与5(6)-1-（4-氨基苯基）-1,3,3 ' -三甲基林丹（5(6)- dapi）反应制备的。采用两种市售DAPI混合物，分别命名为DAPI-1和DAPI-2，其中5-DAPI与6-DAPI异构体的比例分别为36:64和44:56。结果表明，与PMDA-DAPI-2相比，PMDA-DAPI-1中6-DAPI的结构畸变率较高，透气性较好，但选择性较低。第二系列聚酰亚胺采用二乙基甲苯二胺（DETDA）。重点研究了DETDA与2,4,6-三甲基-1,3-二氨基苯（DAM）或1,5-二氨基萘（NDA）以3:1的二氨基单体比例共聚得到的聚酰亚胺。PMDA-DETDA聚酰亚胺具有较高的透气性，但选择性较低。值得注意的是，在混合气体条件下，detda基聚酰亚胺的CO2/CH4分离性能接近1991 Robeson上界。此外，两个系列的聚酰亚胺显示出高玻璃化转变温度（Tg），范围为461°C至534°C，表明它们适合高温气体分离应用。

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引用次数: 0

Synergizing peroxymonosulfate-activated advanced oxidation processes with underwater superoleophobicity in composite membranes for enhanced anti-fouling in oily wastewater purification 过氧单硫酸盐活化的深度氧化工艺与复合膜的水下超疏油性协同作用增强含油废水净化的抗污性

IF 9.5

Advanced Membranes

Pub Date : 2026-03-01 Epub Date: 2025-10-10 DOI: 10.1016/j.advmem.2025.100175

Yuling Yang , Yingxin Zhang , Ping Zhu , Lei Tang , Zhixiang Zeng , Lijing Zhu

Underwater superoleophobic characteristics of the membranes have been developed to defeat fouling caused by organic solvents and oils with low viscosity and high volatility in oily wastewater treatment. However, the classic strategy is lacking in fighting for worse membranes caused by viscous/nonvolatile oils and soluble materials such as dyes and antibiotics in wastewater. Hence, a synergistic antifouling mechanism, combining hydrophilicity/low oil adhesive underwater superoleophobicity and advanced oxidation processes (AOPs), is proposed and implemented by CoFe₂O₄/Fe₂O₃ nanoparticles anchored on polyvinylidene fluoride/polyacrylic acid (PVDF/PAA) blend membranes against various foulants in wastewater. Briefly, the as-prepared composite membrane not only repels the oils and hydrophobic groups in dyes/antibiotics from adhering to the surface due to its low oil adhesive underwater superoleophobicity and hydrophilicity, but also it can effectively degrade the foulants on the surface and within the pore walls because of its excellent AOPs performances. Specially, after the separation of complex oil-in-water emulsion including soybean oil, methylene blue (MB), and levofloxacin (LEVO), the composite membrane bearing hydrophilicity/underwater superoleophobicity and excellent AOPs has a high flux recovery ratio of 95.4 ± 0.3 % and a low fouling resistance of 0.1 × 10¹¹ m⁻¹. This innovative synergistic antifouling mechanism offers an outstanding anti-fouling membrane for the purification of complex wastewater containing various foulants.

膜的水下超疏油特性已被开发用于解决含油废水处理中由有机溶剂和低粘度、高挥发性油引起的污染。然而，传统的策略缺乏对抗由废水中的粘性/非挥发性油和可溶性物质（如染料和抗生素）引起的更差的膜。因此，提出了一种结合亲水性/低油胶粘剂水下超疏油性和高级氧化工艺（AOPs）的协同防污机制，并将CoFe2O4/Fe2O3纳米颗粒固定在聚偏氟乙烯/聚丙烯酸（PVDF/PAA）共混膜上，实现了对废水中各种污染物的协同防污机制。简而言之，所制备的复合膜不仅由于其低油粘水性和水下超疏油亲水性而排斥染料/抗生素中的油和疏水性基团粘附在表面，而且由于其优异的AOPs性能，可以有效地降解表面和孔壁上的污垢。其中，大豆油、亚甲基蓝（MB）、左氧氟沙星（LEVO）等复合水包油乳液分离后，复合膜具有亲水性/水下超疏油性和优异的AOPs，通量回收率高达95.4±0.3%，抗污能力低至0.1 × 1011 m−1。这种创新的协同防污机制为净化含有各种污染物的复杂废水提供了一种出色的防污膜。

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引用次数: 0

High temperature resistant thin film composite polyamide membrane constructed via 3,3′-diamine-Tröger base COFs for enhancing reverse osmosis separation performances 通过3,3 ' -diamine-Tröger基COFs构建耐高温薄膜复合聚酰胺膜，提高反渗透分离性能

IF 9.5

Advanced Membranes

Pub Date : 2026-03-01 Epub Date: 2025-10-31 DOI: 10.1016/j.advmem.2025.100183

Chen-Jie Wei , Xun Li , Xing-Yu Chen , Ya-Wei Lin , Dong Yu , He-Lin Zhu , Xue-Li Cao , Bai-Long Xu , Li-Fen Liu

High temperature resistant thin-film composite polyamide (TFC PA) membranes are notable across various applications. However, the pursuit of efficient separation at elevated temperatures was hindered by the thick and unstable active layer. In this work, based on covalent organic frameworks (COFs) decorated with exceptional porosity, remarkably large specific surface areas, and outstanding thermal stability, a TFC PA reverse osmosis (RO) membrane featuring a slimmer selective layer and enhanced thermal stability was achieved through interfacial polymerization mediated by COF nanoparticles as aqueous-phase modifier. Firstly, a novel COF_TpDATB nanoparticles with high free volume and rigidity were designed and synthesized based on 3,3′-diamine-Trögers base (DATB) with V-shaped rigid structure and 1,3,5-Triformylphloroglucinol (Tp). The introduction of COF_TpDATB nanoparticles retards the penetration of the aqueous phase into the organic phase, facilitating the formation of a thinner and more uniform PA selective layer. The resultant COF_TpDATB modified TFC RO membrane exhibited a water permeance of 35.8 L/(m²·h) and high salt rejection rate of 99.6 %. Notably, the hydrogen bond crosslinking density might be increased owing to hydrogen bond formation between carboxyl groups of PA separation layer and a tertiary amine group of COF_TpDATB, which further guarantee the high salt rejection under high temperature. The membrane showed a high water permeance of 83.7 L/(m²·h) and rejection rate of 99.1 % even at 70 °C. Overall, enhanced by incorporation of COF_TpDATB nanoparticles, TFC PA RO membrane exhibited excellent thermal stability and separation efficiency. The current work is envisaged to supply direction for the high-performance TFC PA RO membrane for high temperature resistance.

耐高温薄膜复合聚酰胺（TFC PA）膜在各种应用中都是值得注意的。然而，在高温下追求有效的分离受到厚厚的和不稳定的活性层的阻碍。在这项工作中，基于共价有机框架（COFs）具有优异的孔隙率，显着的大比表面积和出色的热稳定性，通过COF纳米颗粒作为水相改性剂介导的界面聚合，获得了具有更薄选择层和增强热稳定性的TFC PA反渗透（RO）膜。首先，以具有v型刚性结构的3,3 ' -diamine-Trögers碱（DATB）和1,3,5-三甲酰间苯三酚（Tp）为基材，设计并合成了具有高自由体积和高刚性的新型COFTpDATB纳米颗粒。COFTpDATB纳米颗粒的引入延缓了水相向有机相的渗透，有利于形成更薄、更均匀的PA选择层。所得COFTpDATB改性TFC反渗透膜的渗透率为35.8 L/(m2·h)，盐去除率高达99.6%。值得注意的是，由于PA分离层的羧基与COFTpDATB的叔胺基之间形成氢键，可能会增加氢键交联密度，从而进一步保证了高温下的高阻盐性。在70℃条件下，膜的透水率为83.7 L/(m2·h)，截留率为99.1%。总的来说，COFTpDATB纳米颗粒的加入增强了TFC PA RO膜的热稳定性和分离效率。本研究为高性能TFC PA RO耐高温膜的研究提供了方向。

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引用次数: 0

Rejuvenation of reverse osmosis polyamide membranes degraded by chlorine in the presence of ferric chloride 反渗透聚酰胺膜在氯化铁存在下被氯降解的返青

Advanced Membranes

Pub Date : 2025-01-01 Epub Date: 2025-03-18 DOI: 10.1016/j.advmem.2025.100141

Muhammad Inam Bari, Bende Merve Kayhan, Bengü Bozkaya, Aykut Argönül

Reverse osmosis (RO) polyamide membranes are widely used for water treatment applications. However, certain processes such as wastewater reuse require regular membrane cleaning and disinfection with oxidants, which can lead to early membrane degradation. Furthermore, some metal ions present in the water can act as a catalyst for further accelerating the degradation. This early degradation of RO membranes poses significant challenges, resulting in operational inefficiencies, early disposal of membranes, and elevated operational costs. Fortunately, there is the possibility of recovering some part of this performance loss by means of chemical treatment through rejuvenating agents. This study aims to investigate the effectiveness of a commercially available rejuvenating agent containing tannic acid for restoring salt rejection and permeability parameters on degraded thin-film polyamide membranes. The membranes were first degraded using 250 ppm sodium hypochlorite (NaOCl) and 0.05 ppm ferric chloride (FeCl₃) at various pH levels (pH = 4, 7 and 9). After applying the rejuvenation treatment to the degraded membranes, the efficiency of the rejuvenating agent was determined based on the improvement achieved for performance testing with respect to salt rejection and permeability. Analytical characterization of the membranes was carried out with Fourier Transform Infrared Spectroscopy-Attenuated Total Reflection (FTIR-ATR). It was found that the chlorine degradation of membranes was accelerated in the presence of FeCl₃ at all studied pH levels but more prominently in the acidic region. This acceleration effect was attributed to the formation of (

\cdot OH

,

\cdot OCl

) radicals. Under the conditions studied in this work, rejuvenating agent treatment effectively enhanced the salt rejection capability of the degraded membranes but was unable to restore the permeate flux.

反渗透（RO）聚酰胺膜广泛用于水处理应用。然而，某些过程，如废水回用，需要定期用氧化剂清洗和消毒膜，这可能导致早期膜降解。此外，水中存在的一些金属离子可以作为催化剂，进一步加速降解。反渗透膜的早期降解带来了巨大的挑战，导致操作效率低下，膜的早期处理和操作成本的增加。幸运的是，有可能通过使用回春剂的化学处理来恢复部分性能损失。本研究旨在探讨一种市售的含单宁酸的返青剂在恢复降解的聚酰胺薄膜的抗盐性和渗透性参数方面的有效性。首先使用250 ppm的次氯酸钠（NaOCl）和0.05 ppm的氯化铁（FeCl3）在不同的pH水平（pH = 4、7和9）下对膜进行降解。在对降解膜进行返青处理后，通过性能测试来确定返青剂的效率。利用傅里叶变换红外光谱-衰减全反射（FTIR-ATR）对膜进行了分析表征。研究发现，在所有研究的pH值水平下，FeCl3的存在都加速了膜的氯降解，但在酸性区域更为明显。这种加速效应归因于（·OH，·OCl）自由基的形成。在本研究条件下，还原剂处理能有效提高降解膜的除盐能力，但不能恢复膜的渗透通量。

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引用次数: 0

Advances in MOF membrane strategies for selective lithium extraction from salt lake brine 盐湖卤水中MOF膜选择性提锂研究进展

Advanced Membranes

Pub Date : 2025-01-01 Epub Date: 2025-06-09 DOI: 10.1016/j.advmem.2025.100156

Yuting Wang , Bin Yan , Jiaying Liu , Runkai Wang , Pinhua Rao , Yang Liu

Metal-organic framework (MOF) membranes have emerged as a promising solution for lithium extraction from salt lake brines due to their tunable pore structures and high specific surface areas. Their exceptional selectivity for Li⁺, combined with efficient extraction and robust performance in complex ionic environments, positions MOF membranes as a key technology for low-concentration lithium extraction. However, meeting industrial-scale demands requires not only enhancing membrane selectivity and permeability, but also addressing long-term stability and reusability under harsh conditions. This review provides a comprehensive overview of recent advances in MOF-based membrane materials for Li⁺ extraction, focusing on both inorganic and organic substrate-supported configurations. Strategic approaches in structural design such as the selection of metal nodes, ligand modification, and encapsulation of active molecules, and growth control techniques to achieve precise pore architectures are discussed. Furthermore, methods for enhancing membrane robustness through multilayer and composite structures to improve antifouling properties and durability are outlined. Finally, the challenges and emerging trends are also proposed for sustainable and high-efficiency lithium extraction. This work offers valuable insights and theoretical support for the ongoing technical innovation and industrial application of MOF membranes in lithium extraction.

金属有机框架膜（MOF）由于其可调节的孔隙结构和高比表面积而成为从盐湖盐水中提取锂的一种有前途的解决方案。它们对Li+的特殊选择性，结合在复杂离子环境中的高效萃取和强大性能，使MOF膜成为低浓度锂萃取的关键技术。然而，满足工业规模的需求不仅需要提高膜的选择性和渗透性，还需要解决恶劣条件下的长期稳定性和可重复使用性。本文综述了用于Li+提取的mof基膜材料的最新进展，重点介绍了无机和有机基质支撑结构。讨论了结构设计中的策略方法，如金属节点的选择，配体修饰，活性分子的包封，以及实现精确孔结构的生长控制技术。此外，还概述了通过多层和复合结构增强膜坚固性以提高防污性能和耐久性的方法。最后，提出了可持续高效锂提取面临的挑战和发展趋势。该研究为MOF膜在锂提取中的技术创新和工业应用提供了有价值的见解和理论支持。

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引用次数: 0

Ultrathin mineral interlayers regulate interfacial polymerization of polyamide nanofiltration membranes via multiple non-covalent and coordination bonding for rapid molecular separation 超薄矿物夹层通过多重非共价键和配位键调控聚酰胺纳滤膜的界面聚合，实现分子的快速分离

Advanced Membranes

Pub Date : 2025-01-01 Epub Date: 2025-06-28 DOI: 10.1016/j.advmem.2025.100163

Yan Zhu, Danwei Huang, Hongbo Xie, Zheyuan Liu, Fei-Fei Chen, Yan Yu

Polyamide (PA) nanofiltration membranes have raised considerable interest in the realm of water purification. However, balancing permeability and rejection remains a critical challenge in membrane science and technology. Herein, we report that weak non-covalent hydrogen bonds and strong coordination bonds between ultrathin calcium silicate (UCS) interlayers and piperazine (PIP) powerfully control its diffusion. Theoretical calculations reveal that coordination bonds dominate PIP binding on UCS with an adsorption energy of −443.83 kJ mol⁻¹, thereby impeding its movement. The diffusion coefficient of PIP diminishes by 14 % upon the incorporation of UCS, as evidenced by molecular dynamics simulations. As a consequence, a superhydrophilic, smooth, loose, and ultrathin (∼18.9 nm) PA separation layer is created. The as-obtained UCS-interlayered PA possesses a remarkable water permeance of 31.7 L m⁻² h⁻¹ bar⁻¹ that is 2.2-fold higher than that of UCS-free PA, while dye rejection rates keep a high level. Furthermore, the UCS-interlayered PA demonstrates exceptional antifouling performance with a 95 % flux recovery ratio and long-term stability during 16-h filtration. The study highlights the pivotal role of mineral interlayers in tailoring amine monomer diffusion via multiple interfacial interactions for advanced water treatment applications.

聚酰胺（PA）纳滤膜在水净化领域引起了相当大的兴趣。然而，如何平衡膜的渗透性和排斥性仍然是膜科学和技术的关键挑战。本文报道了超薄硅酸钙（UCS）中间层与哌嗪（PIP）之间的弱非共价氢键和强配位键强有力地控制了其扩散。理论计算表明，配位键主导了PIP在UCS上的结合，其吸附能为- 443.83 kJ mol−1，从而阻碍了其运动。分子动力学模拟表明，加入UCS后，PIP的扩散系数降低了14%。因此，产生了超亲水、光滑、松散和超薄（~ 18.9 nm）的PA分离层。得到的ucs层间聚酰胺的透水性为31.7 L m−2 h−1 bar−1，是无ucs聚酰胺的2.2倍，同时染料的去除率保持在较高水平。此外，ucs -层间PA具有优异的防污性能，其通量回收率为95%，在过滤16小时内具有长期稳定性。该研究强调了矿物中间层通过多种界面相互作用在高级水处理应用中裁剪胺单体扩散的关键作用。

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引用次数: 0

Evaluating and advancing large language models for nanofiltration membrane knowledge tasks 评估和改进纳滤膜知识任务的大型语言模型

Advanced Membranes

Pub Date : 2025-01-01 Epub Date: 2025-06-27 DOI: 10.1016/j.advmem.2025.100161

Xinchen Xiang , Zheng Cao , Yukun Qian , Dan Lu , Jiancong Lu , Jinyan Wang , Shiyu Zhou , Lijun Liang , Zhikan Yao , Lin Zhang

Nanofiltration (NF) is a rapidly growing field, resulting in a surge of publications with diverse focuses. It's challenging for researchers to quickly find key information from the vast amount of publications. Large language models (LLMs) have shown promise in analyzing article and reasoning about knowledge in some scientific fields, but their effectiveness in membrane research is unclear. Here, we introduced the first benchmark specifically designed for membrane studies and used it to systematically evaluate six general-purpose LLMs (i.e., Claude-3.5, Deepseek-R1, Gemini-2.0, GPT-4o-mini, Llama-3.2, and Mistral-small-3.1). Our findings revealed that the complexity and depth of NF knowledge pose a significant challenge for these LLMs, leading to poor performance, particularly in tasks involving membrane mechanisms. To enhance LLMs' using in this field, we developed a specialized NF database and integrated it with the LLMs using Retrieval-Augmented Generation (RAG). RAG significantly improved performance across all models, with average gains of 18.5 % on Question type tasks and 10.8 % on Reasoning type tasks. Moreover, in areas such as membrane fabrication and characterization, several models with RAG demonstrated performance exceeding that of human experts. These results suggested that RAG is a promising strategy for leveraging LLMs in NF research. This study introduced a new path for applying LLMs to membrane research and proposes a professional benchmark to ensure the reliable and effective use of LLMs.

纳滤（NF）是一个快速发展的领域，引起了各种关注的出版物激增。对于研究人员来说，从大量的出版物中快速找到关键信息是一项挑战。大型语言模型（llm）在一些科学领域的文章分析和知识推理方面显示出了前景，但它们在膜研究中的有效性尚不清楚。在这里，我们引入了第一个专门为膜研究设计的基准，并使用它系统地评估了六种通用llm（即Claude-3.5、Deepseek-R1、Gemini-2.0、gpt - 40 -mini、Llama-3.2和Mistral-small-3.1）。我们的研究结果表明，NF知识的复杂性和深度对这些llm构成了重大挑战，导致性能不佳，特别是在涉及膜机制的任务中。为了提高法学硕士在这一领域的应用，我们开发了一个专门的NF数据库，并使用检索增强生成（RAG）将其与法学硕士集成在一起。RAG显著提高了所有模型的性能，在Question类型任务上的平均增益为18.5%，在Reasoning类型任务上的平均增益为10.8%。此外，在膜制造和表征等领域，一些具有RAG的模型表现出超过人类专家的性能。这些结果表明，RAG是利用法学硕士进行NF研究的一种有前途的策略。本研究为llm在膜研究中的应用提供了一条新的途径，并提出了一个专业的基准，以确保llm的可靠和有效使用。

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