Advanced Membranes最新文献

英文中文

Sandwich-like composite membrane for advanced radiative cooling applications

Advanced Membranes

Pub Date : 2025-01-01 DOI: 10.1016/j.advmem.2025.100133

Wuyi Liu , Qing Tian , Yuyi Wang , Liu Yang , Dan Lu , Zhikan Yao , Lin Zhang

Passive daytime radiative cooling (PDRC) offers an energy-efficient method of cooling by reflecting sunlight and emitting heat to the cold outer space through the atmospheric transparent window (ATW). For optimal performance, radiative coolers require high reflectance in the solar spectrum to minimize solar heat absorption and near-unity emissivity in the ATW to maximize heat dissipation. Here, we present a scalable composite radiative cooling membrane (cRCM) composed of a hierarchically porous polysulfone (PSF) layer, sandwiched between two flexible polydimethyl-siloxane (PDMS) layers. The PSF layer, fabricated using a simple non-solvent induced phase separation (NIPS) method, exhibits a high solar reflectance of 98.2 % across wavelengths of 0.3–2.5 μm owing to its high refractive index of 1.64. The PDMS layers, attached on both sides of the PSF membrane via roll-to-roll lamination, offer excellent mid-infrared (MIR) emissivity of 94.2 % across wavelengths of 2.5–20 μm. Under midday conditions, the membrane achieves an average temperature reduction of 5.0 °C below ambient air temperature, with a theoretical cooling power of 114 W/m². Year-round simulations indicate significant cooling energy saving in warm and tropical regions. The new membrane represents a significant advance in PDRC technology, offering promising applications in energy-efficient cooling systems.

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引用次数: 0

Preparation of COF-based membranes via chiral induction for efficient enantioselective resolution

Advanced Membranes

Pub Date : 2025-01-01 DOI: 10.1016/j.advmem.2024.100113

Fanmengjing Wang , Yizhihao Lu , Kaiqiang He , Philip J. Marriott , Matthew R. Hill , Huanting Wang

Efficient chiral resolution is highly important in the food, pharmaceutical and agriculture industries because of the distinctive biological or pharmaceutical properties of enantiomers. Membrane-assisted chiral separation, which has the potential advantages of low cost and high yield, has attracted significant research attention, but the fabrication of high-quality chiral membranes displaying both high selectivity and high flux of enantiomers is still a challenge. Covalent organic frameworks (COFs), a class of porous materials with high porosity and diverse functionalities, are promising for the development of high-performance chiral separation membranes; however, these materials have yet to be developed. In this work, we demonstrated the in situ growth of a chiral TpPa-1 (cTpPa-1) membrane on polymer substrates via chiral induction. The resulting cTpPa-1@PAN membrane displayed a maximum enantioselectivity of 99.3 % ee for resolving limonene racemates with a flux of 5.5 mmol m⁻² h⁻¹. Furthermore, the effects of feed solvent polarity on membrane performance, the versatility of cTpPa-1 for making chiral composite membranes, and the mechanisms associated with cTpPa-1-based membranes were studied and are discussed.

{"title":"Preparation of COF-based membranes via chiral induction for efficient enantioselective resolution","authors":"Fanmengjing Wang , Yizhihao Lu , Kaiqiang He , Philip J. Marriott , Matthew R. Hill , Huanting Wang","doi":"10.1016/j.advmem.2024.100113","DOIUrl":"10.1016/j.advmem.2024.100113","url":null,"abstract":"<div><div>Efficient chiral resolution is highly important in the food, pharmaceutical and agriculture industries because of the distinctive biological or pharmaceutical properties of enantiomers. Membrane-assisted chiral separation, which has the potential advantages of low cost and high yield, has attracted significant research attention, but the fabrication of high-quality chiral membranes displaying both high selectivity and high flux of enantiomers is still a challenge. Covalent organic frameworks (COFs), a class of porous materials with high porosity and diverse functionalities, are promising for the development of high-performance chiral separation membranes; however, these materials have yet to be developed. In this work, we demonstrated the in situ growth of a chiral TpPa-1 (cTpPa-1) membrane on polymer substrates via chiral induction. The resulting cTpPa-1@PAN membrane displayed a maximum enantioselectivity of 99.3 % <em>ee</em> for resolving limonene racemates with a flux of 5.5 mmol m<sup>−2</sup> h<sup>−1</sup>. Furthermore, the effects of feed solvent polarity on membrane performance, the versatility of cTpPa-1 for making chiral composite membranes, and the mechanisms associated with cTpPa-1-based membranes were studied and are discussed.</div></div>","PeriodicalId":100033,"journal":{"name":"Advanced Membranes","volume":"5 ","pages":"Article 100113"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143099933","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

EVOH functionalized PE battery separator as the porous substrate for TFC organic solvent nanofiltration membranes

Advanced Membranes

Pub Date : 2025-01-01 DOI: 10.1016/j.advmem.2025.100131

Guoke Zhao, Tian Zhong, Xinkai Li, Hao Yu, Guoyuan Pan, Yang Zhang, Yiqun Liu

Scholarly discourse surrounding the thin film composite organic solvent nanofiltration (TFC OSN) membrane field has largely been dominated by focusing on the optimization of the selective layer. However, this often leaves the porous support layer, with its innate solvent resistance, cost-effectiveness, and superior permeability, in the shadows. This study presents a novel OSN membrane utilizing a polyethylene (PE) battery separator as the porous substrate. The structural affinity between ethylene-vinyl alcohol and PE facilitates efficient hydrophilic modification, which allows for uniform and compact polyamide selective layer formation through interfacial polymerization. The HPE-NF-1.0 membrane exhibits rejections of 99.5 %, 96.7 %, 100 %, and 97.2 % for Methyl Orange, Rhodamine B, Congo red, and Rose Bengal, respectively. It also shows a solvent flux of 52.5 LMH in methanol and robust resistance against alcoholic solvents and DMF. Using PE as the porous substrate, we bypass intricate and time-demanding cross-linking processes and complex pore-preservation post-treatments, providing a simplified strategy for TFC OSN membrane fabrication.

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引用次数: 0

Progress in design of halloysite nanotubes-polymer nanocomposite membranes and their applications 埃洛石纳米管-聚合物纳米复合膜的设计及其应用进展

Advanced Membranes

Pub Date : 2024-02-01 DOI: 10.1016/j.advmem.2024.100091

Lijuan Qin, Guanying Dong, Yi Nie, R. Fakhrullin, Bing Zhang, Yatao Zhang

引用次数: 0

Metal-organic frameworks-based mixed matrix pervaporation membranes for recovery of organics 用于回收有机物的基于金属有机框架的混合基质渗透膜

Advanced Membranes

Pub Date : 2024-02-01 DOI: 10.1016/j.advmem.2024.100092

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

引用次数: 0

Leveraging calcium-NOM complexation phenomenon as RO fouling mitigation strategy during treatment of lake water 在湖泊水处理过程中，利用钙-NOM 复合现象作为反渗透污垢缓解策略

Advanced Membranes

Pub Date : 2024-01-01 DOI: 10.1016/j.advmem.2024.100105

Oranso T. Mahlangu, Samkeliso S. Ndzimandze, Mxolisi M. Motsa, Bhekie B. Mamba

Organic fouling during reverse osmosis (RO) is exacerbated by the presence of calcium up to a limit where extremely high calcium concentration results in lesser fouling due to formation of large organic-calcium aggregates with lower cake resistance. Therefore, this work leveraged on this phenomenon and used calcium chloride as coagulant (at varying concentration) to reduce membrane fouling while enhancing NOM removal. Membrane cleaning efficiency through calcium-EDTA chelation which disintegrates the fouling layers was explored. RO fouling was performed with sodium alginate solutions and lake water. The fouled membranes were soaked in 0.1 mM EDTA (1 h) and backwashed with water to remove the fouling layer. Alginate fouling was worsened (45–85 %) by increase in calcium concentration up to 5 mM but lessened at > 5 mM calcium concentration (35–15 %). Similar observations were made when filtering lake water, except that lesser fouling was observed at calcium concentrations greater than 15 mM. Membrane soaking in EDTA enhanced cleaning efficiency leading to over 90 % flux recovery for both alginate and late water. However, prolonged membrane exposure to 10 mM calcium resulted in slight decline in membrane salt rejection (<2 % change) and tensile stress (1.3–1.1 N/mm²), while the membrane flux increased (<3 % change). Finally, NOM removal improved with calcium addition (up to 90 %) – key in reducing potential formation of disinfection by-products due to addition of disinfection agents. The proposed use of calcium as a common coagulant/chelating agent for fouling mitigation/remediation during advanced membrane filtration has a potential for wider application and commercialization.

反渗透（RO）过程中的有机污垢会因钙的存在而加剧，在一定限度内，极高浓度的钙会形成大的有机钙聚集体，降低滤饼阻力，从而减少污垢。因此，本研究利用这一现象，使用氯化钙作为混凝剂（浓度不同）来减少膜污垢，同时提高 NOM 的去除率。研究还探讨了通过钙-EDTA 螯合作用分解污垢层的膜清洁效率。使用海藻酸钠溶液和湖水进行反渗透膜污垢处理。将堵塞的膜浸泡在 0.1 mM EDTA 中（1 小时），然后用水反冲洗以去除堵塞层。钙浓度增加到 5 mM 时，藻酸盐污垢会加重（45-85%），但当钙浓度达到 > 5 mM 时，污垢会减轻（35-15%）。在过滤湖水时也观察到了类似的情况，只是当钙浓度超过 15 mM 时，污垢程度较轻。将膜浸泡在乙二胺四乙酸（EDTA）中可提高清洁效率，使藻酸水和晚期水的通量恢复率超过 90%。然而，将膜长时间暴露在 10 mM 的钙中会导致膜盐排斥（变化 2%）和拉伸应力（1.3-1.1 N/mm2）的轻微下降，而膜通量则会增加（变化 3%）。最后，钙的添加提高了对 NOM 的去除率（高达 90%）--这是减少因添加消毒剂而可能形成的消毒副产物的关键。在高级膜过滤过程中，建议使用钙作为普通混凝剂/螯合剂，以减少/修复污垢，这具有更广泛的应用和商业化潜力。

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引用次数: 0

In-situ interfacial polymerization of zwitterionic nanofiltration membranes with anti-scaling performance 具有抗缩放性能的原位界面聚合齐聚物纳滤膜

Advanced Membranes

Pub Date : 2024-01-01 DOI: 10.1016/j.advmem.2024.100095

Yue Shen , Gilles Van Eygen , Bin Wu , Chao Wu , Ming-Jie Yin , Yan Zhao , Bart Van der Bruggen , Quan-Fu An

Mineral scaling caused by multivalent metal ions can significantly hinder the long-term operation of nanofiltration membranes. In this study, in-situ interfacial polymerization including a posttreatment by using a citric acid solution was employed in order to mitigate scaling on the membrane surface. Under the optimal conditions (15 min of posttreatment with a 2 M citric acid solution), the membrane water permeance increased from 5.76 ± 0.2 to 15.1 ± 1.8 L⋅m⁻²⋅h⁻¹·bar⁻¹ for the pristine and the optimal membrane, respectively. The molecular weight cut-off of the optimal membrane was 399 Da, which allows for the removal of organic micropollutants in groundwater. Furthermore, the resulting membrane showed a Na₂SO₄ and CaCl₂ rejection of 92.5 ± 1.9 and 11.4 ± 1.3%, respectively. During the anti-scaling tests, the membrane fabricated with this strategy exhibited a minor decline of the water permeance of 33.5% when subjected to the same water recovery process, opposed to 65.8% for the pristine membrane. This proposed fabricating procedure thus provides an effective strategy for retarding membrane scaling in desalination applications.

多价金属离子造成的矿物结垢会严重阻碍纳滤膜的长期运行。本研究采用了原位界面聚合技术，包括使用柠檬酸溶液进行后处理，以减轻膜表面的结垢。在最佳条件下（用 2 M 柠檬酸溶液进行 15 分钟的后处理），原始膜和最佳膜的透水性分别从 5.76 ± 0.2 升-m-2-h-1-bar-1 提高到 15.1 ± 1.8 升-m-2-h-1-bar-1。最佳膜的截留分子量为 399 Da，可以去除地下水中的有机微污染物。此外，所得膜对 Na2SO4 和 CaCl2 的去除率分别为 92.5 ± 1.9% 和 11.4 ± 1.3%。在防结垢测试中，与原始膜的 65.8% 相比，采用该策略制造的膜在进行相同的水回收过程时，透水性略有下降，降幅为 33.5%。因此，这种拟议的制造程序为海水淡化应用中阻止膜结垢提供了一种有效的策略。

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引用次数: 0

Erratum regarding Declaration of Competing Interest statements in previously published articles 关于以前发表的文章中竞争利益声明的勘误

Advanced Membranes

Pub Date : 2024-01-01 DOI: 10.1016/j.advmem.2024.100090

引用次数: 0

Progress in design of halloysite nanotubes-polymer nanocomposite membranes and their applications 埃洛石纳米管-聚合物纳米复合膜的设计及其应用进展

Advanced Membranes

Pub Date : 2024-01-01 DOI: 10.1016/j.advmem.2024.100091

Lijuan Qin , Guanying Dong , Yi Nie , Rawil Fakhrullin , Bing Zhang , Yatao Zhang

Driven by the diverse functionalization of halloysite nanotubes (HNTs) and advanced membrane preparation technologies, a tremendous progress in HNTs-polymer nanocomposite membranes has been made during the last dozen years. Yet even with these achievements, an elaborate and comprehensive overview on the rational design of HNTs-polymer nanocomposite membranes, their various application areas as well as the corresponding membrane performance status is still missing. Herein, we provide a timeline of the ongoing research on the advanced HNTs-polymer nanocomposite membranes and then outline the progress on: (1) versatile functionalization methods of the HNTs for the state-of-the-art HNTs-polymer nanocomposite membranes. (2) key routes to prepare and design the HNTs-polymer nanocomposite membranes, and the corresponding influences of the modified HNTs on their membrane structures and performances. (3) the overall inductive performances for specific applications in the areas of water treatment, gas treatment, energy conversion, as well as biomedicine. We envision that an insightful perspective will be timely presented in this review to stimulate the innovation in developing more advanced HNTs-polymer nanocomposite membranes, and then motivating and extending their applications.

在哈洛石纳米管（HNTs）多样化功能化和先进膜制备技术的推动下，HNTs-聚合物纳米复合膜在过去十几年中取得了巨大进步。然而，即使取得了这些成就，关于 HNTs 聚合物纳米复合膜的合理设计、各种应用领域以及相应的膜性能状况的详细而全面的概述仍然缺失。在此，我们提供了一个正在进行的先进 HNTs 聚合物纳米复合膜研究的时间表，然后概述了以下方面的进展：(1) 最先进的 HNTs 聚合物纳米复合膜的 HNTs 功能化方法。(2) 制备和设计 HNTs 聚合物纳米复合膜的关键路线，以及改性 HNTs 对膜结构和性能的相应影响。(3) 在水处理、气体处理、能源转换以及生物医学等具体应用领域的整体感应性能。我们希望通过这篇综述及时提出具有洞察力的观点，以激励创新，开发更先进的 HNT 聚合物纳米复合膜，进而推动和扩展其应用。

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引用次数: 0

Inside Front Cover - Aims and Scope

Advanced Membranes

Pub Date : 2024-01-01 DOI: 10.1016/S2772-8234(24)00026-5

引用次数: 0

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全部 ACS Publications Elsevier ieeexplore Springer The Royal Society of Chemistry Wiley

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Advanced Membranes

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