JOURNAL OF MEMBRANE SCIENCE
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2022
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IF 10.53
Xufei Liu,Yuxi Feng,Yunxia Ni,Huawen Peng,Shaoping Li,Qiang Zhao
Nanofiltration represents an efficient technology for mono/divalent ions separation, such as Mg 2+ /Li + mixtures which are crucial for lithium extraction from salt lakes. This work shows that charge intensification of loose structure nanofiltration membranes is an effective way to reconcile high flux with Mg 2+ /Li + selectivity. A new electrolyte monomer (QTHIM) containing quadruple imidazolium and hydroxyl groups was synthesized to react with residual acyl chloride groups on the nascent polyethyleneimine-based polyamide membranes (PEI-TMC), leading to the formation of a high-permeance nanofiltration membrane (PEI-TMC-QTHIM). The modified membrane highlights loose structures combined with enhanced positive charge, exhibiting high water permeance (∼33 L m −2 h −1 bar −1 ), good MgCl 2 rejection (∼92%) and high flux to 100 Mg 2+ /Li + ratio mixture (∼170 L m −2 h −1 ). Notably, flux of the modified membrane is ca. 6 times as high as that of the nascent membrane.
研究领域:
材料科学
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环境工程
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高影响因子
Nature Communications
·
2023
·Vol. 14
·期 1
·1-11
·
IF 16.6
Peng Huawen,Yu Kaicheng,Liu Xufei,Li Jiapeng,Hu Xiangguo,Zhao Qiang
Current polyamide lithium extraction nanofiltration membranes are susceptible to chlorine degradation and/or low permeance, two problems that are hard to reconcile. Here we simultaneously circumvented these problems by designing a quaternized-spiro piperazine monomer and translating its beneficial properties into large-area membranes (1 × 2 m 2 ) via interfacial polymerization with trimesoyl chloride. The quaternary ammonium and spiral conformation of the monomer confer more positive charge and free volume to the membrane, leading to one of the highest permeance (~22 L m −2 h −1 bar −1 ) compared to the state-of-the-art Mg 2+ /Li + nanofiltration membranes. Meanwhile, membrane structures are chlorine resistant as the amine–acyl bonding contains no sensitive N-H group. Thus the high performance of membrane is stable versus 400-h immersion in sodium hypochlorite, while control membranes degraded readily. Molecular simulations show that the high permeance and chlorine resistance, which were reproducible at the membrane module level, arise from the spiral conformation and secondary amine structures of the monomer.
研究领域:
材料科学
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化学工程
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环境科学
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PubMed
高影响因子
JOURNAL OF MEMBRANE SCIENCE
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2023
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IF 9.5
Xinyi Yan,Haohan Wan,Xiujing Xing,Jie Yang,Guangming Yan,Gang Zhang
Currently, many polymeric membranes are poorly tolerated in harsh (strong polar aprotic) solvents like dimethylformamide (DMF) and N-methylpyrrolidone (NMP) and are not applicable to organic solvent nanofiltration (OSN). In this study, we combined the oxidized poly (arylene sulfide sulfone) (OPASS) supports with excellent organic solvent resistance and the spiral-ring polyester interfacial polymerization (IP) layer together to fabricate ultra-resistant and high permeance membranes for OSN. The tetramethyl-1,1′-spirobisindane-6,6′diol (SBI), a contorted diphenol monomer with a spiral-ring structure, was preferentially selected from six types of polyphenols based on molecular simulations and experimental results. It was conducted to react with trimesoyl chloride (TMC) via interfacial polymerization to yield a polyester separation layer of thin film composites (TFC). Investigating the different alkali ratios and types revealed that the alkali added in the aqueous phase to improve the solubility of the SBI could cause hydrolysis of the polyester layer generated by IP, which led to increased membrane permeance and reduced rejection, and the more alkali and the stronger the alkali used, the more severe the hydrolysis. Besides, DMF activation treatment to the TFC membrane improved the ethanol permeance by at least four times while maintaining high congo red rejection. As a result, combining the effects of alkali and DMF activation, the representative TFC membranes fabricated in our work exhibited excellent permeance of 21.5±1.3, 9.0±1.1 L m −2 h −1 bar −1 for DMF and NMP, respectively, and high rejection rates (≥ 93%) for congo red (Mw 696.7 Da), higher than the earlier reports. This research presents a new and straightforward approach to developing TFC membranes with high-efficiency filtration capabilities, suitable for harsh organic solvent separation applications.
研究领域:
材料科学
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化学工程
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高影响因子
JOURNAL OF MEMBRANE SCIENCE
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2022
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IF 10.53
Yuehua Zhang,Peng Xu,Xianfu Chen,Minghui Qiu,Yiqun Fan
Thin-film composite (TFC) nanofiltration (NF) membranes have been widely used in water purification processes. In harsh conditions, however, the application of TFC membrane was limited by selectivity loss because of swelling or dissolution. In this study, a defect-free polyamide (PA) layer was directly prepared on a tubular alumina ceramic membrane with a pore size of 100 nm to compensate these shortcomings. The ceramic support, owing to its superior hydrophilicity, showed excellent affinity with aqueous diamine monomers , preventing defects caused by large pore sizes. Besides, the narrow aperture distribution of support is conductive to control the water-oil interface at an appropriate position that the active layer can form near the support by simple air-drying. Different morphologies and performances were easily obtained by changing the monomer concentration and reaction time. The resulting organic–inorganic composite membrane exhibited pure water permeance of 21.7 LMH/bar and desirable rejection to Na 2 SO 4 of 99.0%. Moreover, the prepared NF membrane showed satisfactory compaction resistance at pressure from 2 to 12 bar owing to the excellent mechanical strength of the support. The inorganic support also endowed the TFC membrane with good performance stability even at 75 °C and after soaking in different organic solvents for one week.
研究领域:
材料科学
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环境工程
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高影响因子
JOURNAL OF MEMBRANE SCIENCE
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2021
·
IF 8.742
Rujie Yang,Yan Fan,Risheng Yu,Fangfang Dai,Jian Lan,Zhikun Wang,Junlang Chen,Liang Chen
Graphene oxide (GO) lamellar membranes exhibit great potential for application in molecular separation. However, they are still limited by low water permeation and swelling effects. Here, we develop robust K + -crosslinked reduced GO (rGO–K + ) membranes for treating wastewater containing multivalent heavy metal ions. The rGO–K + membranes demonstrated a water permeance of 86.1 L m −2 h −1 bar −1 and a rejection rate of 99.8% for FeCl 3 , which exceed the corresponding values of state-of-the-art nanofiltration (NF) membranes for multivalent metal ion rejection. Further, the rGO–K + membranes exhibited excellent aqueous stability under a high pressure (up to 9 bar) and acidic, neutral, and alkaline conditions. The improved permeability of the rGO–K + membranes was attributed to the cation–π interactions between K + and the rGO sheets, which fixed and enlarged the interlayer spacing, as well as increased the surface hydrophilicity, thus weakening the water transport resistance. The intercalated K + linked the adjacent layers through the cation–π interactions, which enhanced the membrane stability. The prepared rGO–K + membranes have potential for use in membrane separation in industrial applications.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
Journal of Environmental Chemical Engineering
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2025
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IF 7.2
Na Zhang,Fanglu Fu,Wen Bo,Hussein Baqiah,Li Zhao,Wenbo Lu,Yadi Cai,Jiahui Tian,Tingting Yan,Saisai Li,Shuyun Zheng,Qiang Li
Two kinds of polyelectrolyte assembled membranes have been prepared using a rigid sulfonated polysulfone (SPSU) and a flexible poly(sodium 4-styrenesulfonate) (PSS) as anionic polyelectrolytes, respectively, with a polyethyleneimine (PEI) as a common cationic polyelectrolyte. The effects of molecular backbone’s rigidity and flexibility on the characteristics and performances of SPSU/PEI and PSS/PEI membranes have been investigated in detail. The SPSU/PEI membrane with two bilayers (SPSU/PEI-2.0) has a thinner and looser separation layer due to expanded molecular conformation and bulky benzene rings of the SPSU. In addition, the SPSU/PEI-2.0 membrane exhibits an ultrahigh pure water permeance up to 70.0 L m −2 h −1 bar −1 . The optimized separation performance for Congo red (CR)/NaCl and CR/Na 2 SO 4 displays the same high CR rejection of 99.6 %, low NaCl rejection of 1.2 % and Na 2 SO 4 rejection of 7.9 %. The SPSU/PEI-2.0 membrane also shows excellent acid-resistance stability, thermal stability and long-term operation stability. This research presents that choosing polyelectrolytes with appropriate molecular structures can be attractive when designing polyelectrolyte multilayer membrane to separate dye and salt.
研究领域:
材料科学
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环境工程
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高影响因子
DESALINATION
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2024
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IF 8.3
Bowen Zhou,Juan Luo,Ruitao Li,Rongrong He,Tao He
Oxidation resistant nanofiltration (NF) membranes have been pursued for wide applications. Mostly researched NF membranes were based on interfacial polymerization (IP) technology, which is not stable in oxidative chemicals. In this paper, a novel layer-by-layer (LBL) self-assembled NF membrane prepared by coating poly(vinylbenzyltrimethylammonium chloride)/poly(styrene sulfonic) (PVBTMAC/PSS) on a polyethersulfone (PES) substrate was presented with exceptionally high permeance and oxidation resistance. The optimized NF membrane of [PVBTMAC/PSS] 8.5 demonstrated a pure water permeance (PWP) of 47.6 L/(m 2 ·h·bar) and nearly 100% rejection for various dyes. The PVBTMAC/PSS membrane showed distinct rejection to asymmetric salts (MgCl 2 , Na 2 SO 4 ) following Donnan exclusion. Excellent chlorine resistance was found after 150,000 ppm·h sodium hypochlorite treatment for both [PVBTMAC/PSS] 8.5 and [PVBTMAC/PSS] 9 , demonstrated by the stable rejection to MgSO 4 and prussian blue (PB) dye with reduced pore size. Declined rejection to MgCl 2 and increased rejection to Na 2 SO 4 was explained by oxidation of the highly active α-H on the aromatic ring side group of PVBTMAC to -COO − and Donnan exclusion effect. The integrity of LBL NF membranes was caused by additional π-π stacking between the polyelectrolytes. Both membranes demonstrated good long-term operational stability for dye separation with great potential for real applications.
研究领域:
材料科学
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环境工程
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高影响因子
WATER RESEARCH
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2025
·
IF 12.4
Chenyi Fang,Muhammad Avicenna Naradipa,Yuewen Jia,Junyu Mi,Haoze Zeng,Joseph Imbrogno,Tim M. Swenson,Chenhao Yi,Shipeng Sun,Andrivo Rusydi,Sui Zhang
Nanofiltration (NF) membranes are widely used in water treatment and desalination. One commonly observed limitation of these membranes is the reduced water permeance in the presence of salts. Here, we introduce diol-based solvents into interfacial polymerization (IP) to form polyamide-type NF membranes. The high viscosity and low surface tension of the solvents reduced the concentration of piperazine (PIP) at the interface, resulting in membranes with a reduced thickness (82.7 to 30.2 nm), lower surface roughness (20.9 to 6.2 nm) as well as higher water permeance (11.1 to 21.0 L.m −2 .h −1 .bar −1 ) compared to original NF membrane, without significantly sacrificing salt rejection ability (97.0% rejection to Na 2 SO 4 ). More interestingly, the crosslinking degree of the polyamide layer prepared by diol-based solvents was lower, giving rise to higher charge density and swelling in salt solutions. Thus, higher water permeance in treating saline water was observed, and the membranes demonstrated effective separation of organic molecules from salts at elevated water permeance and lower fouling extent in concentrating antibiotics from the realistic pharmaceutical wastewater stream.
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PubMed
高影响因子
JOURNAL OF MEMBRANE SCIENCE
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2020
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IF 7.183
Chong Li,Jie Li,Wen-Hai Zhang,Naixin Wang,Shulan Ji,Quan-Fu An
Organic solvent nanofiltration (OSN) is emerging as an efficient and emerging approach for separation and purification of solute from organic solvents, which however were severely underdeveloped because of the low permeance of membranes. Herein, a novel mixed matrix membrane (MMM) was developed by incorporation of modified mesoporous silica nanoparticle (MSN) into commercially-available polydimethylsiloxane (PDMS) matrix for removal of trace impurities, such as Evans blue or vitamin B12, from different organic solvents. Notably, because of the designed nanoscale spaces originated from MSN, the permeance of the optimized MMM reached up to 31.2 L m −2. h −1. MPa −1 , around 17-fold enhancement compared with that of pristine PDMS membrane. Low-field nuclear magnetic resonance was employed to trace the solvent state in the MMM. The MMM exhibited high MeOH absorption capability but low-swelling attribute, certificating the high permeance and long-term stability of the MMM. The MMM was stably tested in MeOH solution for more than 80 h, indicating the great promise for future practical OSN applications.
研究领域:
材料科学
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化学工程
·
分离技术
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高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2021
·
IF 8.742
Ju Bai,Wei Lai,Lili Gong,Luqi Xiao,Guosheng Wang,Linglong Shan,Shuangjiang Luo
In order to enhance the permeance of the acid resistance membrane, an ionic liquid (IL) regulating strategy was proposed to rearrange the interfacial polymerization process. Herein, we revisited polyethylenimine (PEI) and cyanuric chloride (CC) as the pristine acid-resistant membrane. 1-aminopropyl-3-methylimidazolium chloride ([AEMIm][Cl]) and 1-aminopropyl-3-methylimidazolium bis((trifluoromethyl)sulfonyl)imide ([AEMIm][Tf 2 N]) ILs were used to regulate the interfacial polymerization process. Molecular dynamic (MD) simulation was used to reveal IL and PEI diffusion behavior in aqueous solution, membrane pore size distribution , and porosity. The effects of ILs on membrane surface morphology , surface zeta potential , chemical composition, and separation property were analyzed. The IL regulating strategy endow the membrane with uniform smaller pore and higher porosity, thus improved membrane permeance and selectivity simultaneously. For the [AEMIm][Cl] IL, the corresponding AEMIC-PEI-CC membrane showed high permeance of 79.1 L m −2 h −1 bar −1 , which is 1.36 times the pristine PEI-CC membrane, combined with high Y 3+ rejection of 97.5%, low H + rejection of 1.35%. In addition, this membrane showed good acid stability in 30 days long-term test.
研究领域:
材料科学
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环境工程
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
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IF 12.5
Zhicheng Wang,Xin Shi,Zizhen Peng,Wenzhong Ma,Yakai Lin,Hideto Matsuyama,Qiuyan Bi
A SISAIP strategy was developed to regulate interfacial PA formation. • SDS/NaCl regulation produced ultrathin PA layers with sub-nanometer pathways. • The membrane achieved S Li, Mg of 90.9 and permeance of 9.5 L m −2 h −1 bar −1 . • Stable operation and strong flux recovery were obtained under brine-relevant tests. The rapidly increasing global demand for lithium has stimulated the development of advanced membrane technologies for lithium extraction from salt-lake brines. Nanofiltration (NF) membranes with precisely regulated subnanometer transport pathways are highly attractive for Li + /Mg 2+ separation; however, the rational construction of selective layers that simultaneously deliver high ion selectivity and fast water transport remains challenging. Herein, we report a scalable surfactant–inorganic salt–assisted interfacial polymerization (IP) strategy, termed SISAIP, to fabricate high-performance polyamide NF membranes. Interfacial tension, dynamic light scattering, and UV–vis analyses indicated that sodium dodecyl sulfate enriched at the water/oil interface and regulated PEI transport across the interface, whereas NaCl modified the aqueous-phase microenvironment, moderated PEI diffusion toward the interface, and helped confine the interfacial reaction zone. This coordinated regulation produced an ultrathin PA selective layer with an apparent thickness of 11.2 ± 0.6 nm and compact subnanometer transport pathways. The optimized membrane achieved a water permeance of 9.5 L·m −2 ·h −1 ·bar −1 , an S Li,Mg of 90.9, and Mg 2+ rejection above 99.5%, corresponding to 578.6% and 437.9% increases in water permeance and S Li,Mg over the control T-IP membrane, respectively. The membrane also maintained stable performance during 120 h of continuous filtration and exhibited favorable fouling/scaling resistance, with a flux recovery ratio of 100% under organic-conditioned CaSO 4 scaling conditions. This SISAIP strategy provides a promising and scalable route for designing advanced NF membranes toward efficient lithium recovery from salt-lake brines.
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高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2025
·
IF 9
Zhixiao Liu,Yuhang Zhao,Mingli Yi,Lintao Liao,Yangyang Huang,Guangqiu Lei,Gao Hu,Mayu Lan,Huiping Li,Zhiming Mi
Antibiotics in water bodies pose a significant threat to the health of plants, animals, and humans, thereby contributing to severe ecological crises. Polyamide nanofiltration (NF) membranes are extensively employed for the separation and purification of antibiotics but are limited by relatively low permeation fluxes. In this study, three biobased phloretin derivatives—phloretin (Pt), phlorizin (Pz), and naringenin dihydrochalcone (Ng), were selected as water-phase monomers and reacted with trimesoyl chloride to fabricate three novel polyester NF membranes. The results demonstrated that the variations in the molecular structure gradients, including twisted conformation and molecular weight, of the three derivatives significantly influenced the structure and properties of polyester NF membranes. In-depth mechanistic analysis revealed that the diffusion rates (mainly related to molecular weight) of the three derivatives into the oil-phase solution, rather than their reactivity with TMC, governed the interfacial polymerization (IP) process. Consequently, Pt-based polyester NF membranes exhibited relatively dense layers compared to Pz- and Ng-based ones, achieving rejections of 92.4 % and 85.7 % for bacitracin and erythromycin, respectively, while maintaining a permeance of 35.2 L/m 2 h bar, which was significantly higher than that of conventional polyamide NF membranes. Meanwhile, the relatively loose structure of the Pz- and Ng-based polyester NF membranes made their permeance reach as high as 65.8 L/m 2 ·h·bar and 107.2 L/m 2 h bar, respectively, while maintaining intermediate separation level for five antibiotic molecules. Furthermore, the three polyester NF membranes demonstrated excellent chlorine resistance, antifouling properties, and good environmental adaptability. The three biobased polyester NF membranes in this study offer a novel approach for the development of high-flux NF membranes for antibiotic separation and other specialized scenarios. The correlation between the molecular structure of the derivatives and the membrane separation performance further deepens the understanding of polyester-based IP theory.
研究领域:
环境科学
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材料科学
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化学工程
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膜技术
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药学
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DOI
高影响因子
危险品化学品经营许可证（带存储）