SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Yafang Wu,Yujia Tong,Li Zhang,Xiaohui Ju,Chenxuan Shao,Qi Zhang,Weixing Li,Weihong Xing
Ultrafiltration membrane for purification of proteins represents a significant research challenge. In order to improve the uniformity of membrane pores, carboxymethyl chitosan hydrogel (TB-g-MC) grafted by methacrylic anhydride and 2, 3, 4-trihydroxybenzaldehyd was proposed to construct polyethersulfone (PES) ultrafiltration membrane with crosslinked network. TB-g-MC with better hydrophilicity could effectively slow down the phase transition process, which led to more uniform membrane pores. The water flux of the PES/TB-g-MC membrane arrived at 880.2 L·m −2 ·h −1 , three times higher than that of the pristine membrane. The rejection of bovine serum albumin (BSA) was 99.5 % with the collagen permeability of 99.9 %, which showed that the developed membrane had narrow pore size distribution and better separation performance. Furthermore, it exhibited noteworthy anti-fouling characteristics with the flux recovery of 90 %. The proposed membrane with hydrogel network structure will be prospective for protein purification and production in biomedical field.
研究领域:
生物医学工程
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材料科学
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DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2024
·
IF 7.4
Haimei Zhong,Yiwen Wang,Qinliang Jiang,Huali Tian,Cheng Jiang,Pei Han,Yingying Qin,Lixiang Li,Shuanglin Gui
The trade-off between permeability and selectivity, along with the issue of membrane fouling, has constrained the widespread application of ultrafiltration (UF) membranes in recycling rare earth wastewater. Here, we present the incorporation of tannic acid (TA) modified molybdenum disulfide oxide (O-MoS 2 ) as a functional enhancer to fabricate polyethersulfone (PES) based mixed matrix membranes through a nonsolvent induced phase separation (NIPS) approach. Compared to the unmodified PES membrane, the integration of TA-O-MoS 2 significantly improves the hydrophilicity, porosity in the mixed matrix membrane. By altering the concentration of TA-O-MoS 2 , the TA-O-MoS 2 /PES UF membrane achieves enhanced hydrophilicity and charge properties, resulting in a remarkable improvement in separation performance. Specifically, the optimized membrane M2 (TA-O-MoS 2 addition of 0.1 wt%) exhibits a water flux of 140.98 Lm −2 h −1 bar −1 and a PEG 20000 rejection rate of 91.00 %, representing increases of 180 % and 120 % over the control PES membrane, respectively. Notably, membrane M2 effectively retains 91.31 % of macromolecular organic compounds in rare earth wastewater, while permitting nearly complete passage of inorganic salts, for instance CaCl 2 (3.26 %) and MgSO 4 (4.84 %). Moreover, the TA-O-MoS 2 /PES membrane demonstrates robust antifouling properties and exceptional durability, indicating its significant potential for efficient treatment and resource recovery in rare earth wastewater.
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
SEPARATION AND PURIFICATION TECHNOLOGY
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2026
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IF 9.1
Zhongmin Feng,Zheng Wang,Li-hua Qi,Sijie Yun,Chuang Zu,Ling Huang,Shengping Wang,Huanting Wang
Gas separation using metal organic framework (MOF) membranes has attracted considerable attention in recent years. Despite the progress made, establishing thin, defect-free MOF layers within the porous polymer remains a significant challenge. In this study, a novel approach is reported for the preparation of ZIF-8/Polyethersulfone (ZIF-8/PES) composite membranes via non-solvent-induced phase separation (NIPS)-triggered in-situ crystallization strategy. In this method, PES serves as a solid solvent for Zn(NO 3 ) 2 . During the NIPS process, an asymmetric PES membrane with a skin layer, finger-like pores, and interconnected foam structures is formed. Concurrently, Zn(NO 3 ) 2 diffuses to the skin layer and reacts with 2-methylimidazole (2-MIM), yielding a dense ZIF-8 layer on the PES surface. The simultaneous nucleation and growth of ZIF-8 within the polymer create strong interfacial interactions at the organic-inorganic interface. These interactions improve the compatibility between ZIF-8 and the polymer matrix, reduce interfacial defects. As a result, the composite membrane exhibits enhanced mechanical stability. When the crystallization time is extended to 48 h, the thickness of the ZIF-8 layer reaches approximately 540 nm, and the membrane exhibits an H 2 /CO 2 selectivity of 72.3 ± 3.35 at 298 K. This study provides a facile and effective route for constructing thin MOF membranes on polymeric matrix for high-performance gas separation.
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高影响因子
Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 5
·123941
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IF 7.5
Mengyuan Yang,Yanling Li,Temitope Fausat Ajibade,Ziang Zhou,Zhaoping Cai,Lixiang Li,Huali Tian
Covalent organic frameworks (COFs) are effective materials for water treatment membranes due to their tunable pore structures and high compatibility. While composite modification strategies combining plant polyphenol tannic acid (TA)-Fe³⁺ and COFs show great promise for TFC membranes, they typically involve organic solvents or complex pre-modification of the fillers. In this study, a green, fully-aqueous layer-by-layer (LbL) self-assembly strategy was employed to prepare TA-Fe(COF-LZU1)/PES membranes. By exploiting the inherent synergy between the rigid crystalline channels of COF-LZU1 and the adhesive TA-Fe network, this approach directly utilizes pristine COF-LZU1 without secondary modification. Unlike conventional methods, the entire process avoids organic solvents, offering a highly sustainable technical alternative. The incorporation of COF-LZU1 significantly enhanced the membrane surface properties, with surface roughness increasing from 17.0 ± 2.2 nm to 43.8 ± 8.5 nm and the water contact angle decreasing from 77.0 ± 1.6° to 20.0 ± 1.0°, thereby substantially improving the membrane’s hydrophilicity. The TA-Fe(COF-LZU1)/PES membrane achieved a pure water permeance of 35.85 L·m - ²·h - ¹·bar - ¹, representing a 11.5% increase over the TA-Fe/PES membrane. It exhibited excellent separation performance, achieving high rejections of 98.3% for Direct Red 80, and further demonstrated robust stability in mixed dye/salt solutions. In five-cycle bovine serum albumin (BSA) tests, the membrane exhibited improved antifouling durability, yielding a flux recovery ratio of 75.5%. Additionally, it operated stably across a pH range of 4–8. This green self-assembly approach provides a practical strategy for preparing composite membranes for dye wastewater treatment.
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高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
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2025
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IF 8.9
Yi Xue,Zhuang Huang,Zehao Yang,Jiamei Luo,Yong Liu,Minqiang Jiang,Hui Zhang,Jianyong Yu
In this study, through a targeted experimental approach, polyethersulfone/carbon nanotubes (PES/CNTs) films with variable carbon nanotubes (CNTs) contents were fabricated by the phase inversion approach and employed in carbon fiber/epoxy (CF/EP) composites prepared by the vacuum-assisted resin infusion process to upgrade the toughness of composites. The dissolution of the PES/CNTs films in the epoxy resin was revealed to be controllable, which guaranteed a gradient distribution of polyethersulfone and CNTs between the layers. As observed, the CF/EP composites with PES/CNTs films containing 0.5 phr CNTs provided the optimized mode I fracture toughness with a 120.4% increase in G IC compared to the reference. Whereas, the G IIC of the composites with PES/CNTs film containing 1.0 phr CNTs was increased by 92.5%. Additionally, observation of the fracture surfaces of mode I and mode II specimens by scanning electron microscopy revealed that PES/CNTs films toughened CF/EP composites via three mechanisms: i) crack deflection and secondary microcracks initiation caused by polyethersulfone microspheres, ii) cracks bridging effect and pull-out from the epoxy matrix of CNTs and iii) CNTs distributed between epoxy matrix and polyethersulfone microsphere led to more energy consumption, which had a synergistic effect. This method overcomes the trade-off between toughness and stiffness in traditional interleaving methods, providing a new approach for the manufacturing of high-performance CF/EP composites.
研究领域:
材料科学
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聚合物复合材料
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纳米技术
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机械工程
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DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
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2026
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IF 9
Ruina Zhang,Yugang Zhou,Tao Zhang,Yu Gao,Xunbin Yang,Yanshuo Li,Wei Fang
Alkaline water electrolysis (ALK) faces technological challenges including low electrolysis efficiency, high energy consumption, and limitation of membrane technology. Herein, we report a nickel-polyethersulfone (Ni-PES) composite membrane modified by platinum (Pt) to function simultaneously as a highly active hydrogen evolution reaction (HER) electrode and a hydrogen-selective membrane. The Ni-PES membrane was prepared by phase inversion tape casting and atmospheric sintering, in which PES polymer provides the structural skeleton and metallic nickel serves as the electronic conductor and HER catalyst. Moreover, proper heat-treatment changes the microstructure and hydrophobicity of Ni-PES membrane, and Pt electrodeposition significantly boosts HER activity. The optimized Pt@Ni-PES-400 membrane electrode achieves a low overpotential of 104.9 mV@100 mA cm −2 and a Tafel slope of 125.8 mV dec −1 in concentrated alkaline electrolyte (30 wt% KOH). Furthermore, we design and fabricate a H-type, diaphragm-free, and two-chamber electrolytic cell, which is separated by Ni-PES-based membrane. Such membrane-based H cell realizes the combination of hydrogen production and separation processes: the in-situ generated hydrogen via water electrolysis is transported through the Pt@Ni-PES-400 membrane to the gas collection chamber, with a hydrogen purity of up to 99.95 % and a hydrogen permeation rate of 0.18 mL min −1 cm −2 at an overpotential of −500 mV, and the cell performance remains stable during 100 h of operation.
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高影响因子
Journal of the Taiwan Institute of Chemical Engineers
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2017
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IF 4.217
Libin Yang,Zhan Wang,Jinglong Zhang,Peng Song,Liping Liu
A thermally induced phase separation followed by non-solvent induced phase separation (TIPS-co-NIPS) was used to prepare polyethersulfone (PES) substrate with reduced internal concentration polarization (ICP) for thin film composite forward osmosis (TFC-FO) membrane. Using polyethylene glycol (PEG) as the additive, impacts of TIPS process on substrate properties, TFC layers and FO performances were investigated. The results revealed that the substrate prepared by TIPS-co-NIPS method with 10 s cooling time showed a fully finger-like structure, enhanced permeation performance and better surface hydrophilicity. As a result, the corresponding TFC-FO membrane exhibited 44% lower structural parameter than the TFC-FO membrane based on NIPS substrate (684 µm versus 380 µm), high water fluxes up to 32.9/20.4 LMH and reverse salt fluxes of 14.1/8.2 gMH in the PRO/FO mode using 1 M NaCl as the draw against DI-water feed. Therefore, the proposed TIPS-co-NIPS method utilizing PEG as the additive may be considered as a feasible approach to regulate substrate structure and property for TFC-FO membrane.
研究领域:
膜科学
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水处理技术
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材料工程
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分离过程
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DOI
高影响因子
POLYMER ENGINEERING AND SCIENCE
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2025
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IF 3.2
Yanrui Cheng,Nan Yao,Yi Guo,Shifeng Ji,Yunqing Xing,Chunmei Gao
Membrane fouling remains a critical obstacle for the application of polyethersulfone (PES) ultrafiltration in industrial wastewater treatment. In this work, a novel multifunctional composite membrane was developed by co-embedding carbon quantum dots (CQDs) and ZIF-L-derived carbon-doped ZnO (C-ZnO) nanoparticles into a PES matrix via the reverse thermally induced phase separation (RTIPS) method. The optimized membrane M3 contains 0.05 wt% CQDs and 0.02 wt% C-ZnO. It exhibited a remarkably hydrophilic surface with a water contact angle of 51.8°. Compared to membranes fabricated by conventional non-solvent induced phase separation (NIPS), the RTIPS method produced a structure with a highly porous surface and an interconnected sponge-like support, effectively breaking the permeability-selectivity trade-off. The optimized composite membrane exhibited a superior pure water permeability of 1555 L m −2 h −1 while maintaining a high humic acid rejection of 91.9%. This membrane also demonstrated robust long-term antifouling stability and a photocatalytic flux recovery rate of 65.8% under visible light. Furthermore, it achieved nearly 100% antibacterial activity against E. coli and S. aureus , attributed to a dual-defense mechanism combining a physical hydration layer with the chemical action of photocatalysis and Zn 2+ release. These findings highlight the significant potential of this RTIPS-fabricated CQDs/C-ZnO/PES membrane as a robust solution for high-performance wastewater treatment.
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高影响因子
RSC Advances
·
2017
·Vol. 7
·期 89
·56204-56210
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IF 3.108
Runlin Han,Xufeng Ma,Yongli Xie,Da Teng,Shouhai Zhang
MXene, a new 2D transition metal carbide-based material, possesses excellent electrical conductivity and hydrophilicity. In this study, Ti3C2Tx (where T represents a functional group (O, OH, and/or F)) was produced by etching and ultrasonicating Ti3AlC2. Then, it was used to prepare the MXene composite membrane via a simple filtration method performed at 0.2 MPa on a polyethersulfone (PES) ultrafiltration membrane. The MXene composite membrane shows excellent flux (115 L m−2 h−1) and favorable rejection to Congo red dye (92.3% at 0.1 MPa). The membrane demonstrated rejection to inorganic salts below 23% with flux above 432 L m−2 h−1 at 0.1 MPa. Due to its loose lamellar structure, the composite membrane is able to demonstrate efficient permselectivity in the separation of dyes from salts. Furthermore, the composite membrane shows excellent hydrophilicity and flux because of the lamellar hydrophilic MXene.
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
RSC Advances
·
2016
·Vol. 6
·期 109
·107840-107850
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IF 3.289
Lixia Liu,Fei Shen,Bowu Zhang,Haiqing Jiang,Jingye Li,Jianquan Luo,Huanhuan Wu,Rashid Khan,Yinhua Wan
Polyethersulfone (PES)-based membranes with a high and stable desalination performance for vacuum membrane distillation (VMD) were fabricated by spraying a dispersion containing hydrophobic-modified PES grafted copolymers onto porous PES membranes. The copolymer (PES-g-PFMA-C8) with different degrees of grafting (DG) was synthesized by grafting 1H,1H,2H,2H-perfluorodecyl methacrylate (FMA-C8) onto PES by simultaneous irradiation in a homogeneous system wherein the kinetics of the radiation-induced graft polymerization was studied. The copolymers, pristine PES membrane and fabricated PES-based membranes were also characterized by Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy and scanning electron microscopy. After spraying, the hydrophobicity of the membrane increased and its maximum pore size reduced, which enhanced its desalination stability. During an intermittent 80 h VMD desalination operation, a flux of approximately 50.5 kg m−2 h−1 and a stable salt rejection of 99.98% were achieved when a 3.5 wt% NaCl solution was treated at 70 °C under vacuum of 92 kPa by the PES-based membrane using the copolymer with a DG of 20.3%, whereas salt leakage obviously occurred since the 52nd hour of operation when the pristine PES membrane was used. These results indicate that the modified PES membrane developed in this study is a promising candidate for VMD desalination due to its comparable flux.
研究领域:
材料科学
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环境工程
·
化学工程
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DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2022
·
IF 10.53
Nan Li,Tian-Jiao Lou,Wenyi Wang,Min Li,Li-Chao Jing,Zhi-Xian Yang,Ru-Yu Chang,Jianxin Li,Hong-Zhang Geng
The appearance of the composite membrane provides a new research direction for reducing membrane fouling . In this study, polyaniline (PANI) and Ti 3 C 2 T x (MXene) were combined by the electrostatic assembly method where PANI was used to adjust the distance between MXene layers and construct the conductive network. The conducting mixed ultrafiltration membranes were prepared by the non-solvent induced phase separation method, in which MXene and PANI were mixed into a polyethersulfone (PES) matrix. The permeation flux of pure water of the MXene-PANI/PES membrane was increased by 200.9%, the retention rate of bovine serum albumin (BSA) was kept above 99%, and the retention rate of Congo Red and Methyl blue dyes was 99.1% and 98.4%, respectively, this goes well beyond the PES membrane. In addition, through a series of conductivity tests, it has been proved that the conductive properties of composite membranes were greatly improved, and the conductivity of the MXene-PANI/PES composite membrane can reach 0.5 S m −1 . After applying a negative voltage to the membrane, the negative charge around the surface of the membrane repels the negatively charged contaminant under the action of an electrostatic repulsion force, thereby the enrichment of pollutants on the membrane surface can be effectively reduced, and the FRR reached 93.7%. On the basis of ensuring membrane conductivity, we improved the permeability, selective separation, and anti-fouling ability of the membrane. This research shows great potential for the efficient development of an anti-fouling conductive separation membrane based on MXene.
研究领域:
材料科学
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环境工程
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化学工程
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DOI
高影响因子
Materials Today Physics
·
2024
·
IF 10
Xiaoke Fang,Yi Zhang,Kaixiang Pang,Yuanhui Wang,Tingting Hu,Wei Zhang,Chunhong Gong,Jingwei Zhang
Although graphene nanosheets (GNs) with huge specific surface area and exceptional electrical properties exhibit attractive practical prospect in the realm of electromagnetic function materials, how to optimize the distribution states of GNs in matrix is still a challenge. In this work, the suspension of GNs was prepared directly via an efficient liquid-phase exfoliation (LPE) process in N-octyl-2-pyrrolidone (NOP). Thanks to the dissolution of polyether sulfone (PES) in NMP and NOP solvent, the GNs/PES composites were in-situ prepared via a facile solution blending in combination with evaporation process. The “function units” of the mesoscopic micro-cluster structure assembled by GNs during the solvent evaporation process contribute to optimized impedance matching characteristics and loss capabilities as well as excellent electromagnetic wave (EMW) absorbing performance of the as-constructed GNs/PES electromagnetic composites. Particularly, the as-prepared sample G-P-9 with a graphene content of as low as 9.0 wt% exhibits outstanding EMW absorbing performance in the whole ranges of tested frequency (8.2–12.4 GHz) and temperature (293–453 K) with a minimum reflection loss (RL) of −52.7 dB. Besides, the in-situ self-assemble GNs/single-walled carbon nanotubes (GNs/SWCNT) film with pre-constructed three-dimensional interpenetrating conductive network exhibits excellent electromagnetic interference (EMI) shielding effectiveness (SE) of about 5.1 × 10 4 dB cm 2 g −1 . The present approach would be applicable to construct high-performance electromagnetic functional materials and broaden the application prospect of high-integrity graphene nanosheets .
研究领域:
材料科学
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电磁学
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纳米技术
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DOI
高影响因子
危险品化学品经营许可证（带存储）