SEPARATION AND PURIFICATION TECHNOLOGY
·
2017
·
IF 3.359
Guosheng Wang,Chuanyang Zhang,Mengjie Sun,Xu Zhang,Cuiming Wu,Yonghui Wu
Porous sulfonated polyethersulfone and polysulfone (SPES and SPSf) cation exchange membranes were prepared by phase inversion process, in which water was used as the coagulation bath at 4 °C or 25 °C. Dense SPES and SPSf cation exchange membranes were also prepared for comparison. Characterizations of the membrane structure, morphology and physico-chemical properties showed that the dense membranes are hydrophobic with large area resistance (>80 Ω cm 2 ), while the porous membranes are hydrophilic with low area resistance (0.35–18.62 Ω cm 2 ). The porous SPSf membranes have lower area resistance (0.35–0.81 Ω cm 2 ) than SPES membranes due to their higher water uptake (289.1–370.1%) and special morphology containing oval-shaped pores in the top skin layer. The membranes are utilized in bipolar membrane electrodialysis (BMED) process to separate the mixed amino acids of l -glutamic acid (Glu) and l -lysine (Lys). Though the dense membranes are unsuitable for electrodialysis experiments due to the large area resistance, the porous membranes have higher recovery ratio and current efficiency than the commercial membrane CMX, for the Lys + can migrate through the porous membranes with lower hindrance. In addition, the SPSf membranes have higher Glu leakage ratio (13.9–15.3%) and lower energy consumption (4.82–6.52 kWh/kg) than the SPES membranes (∼0%, 6.43–9.53 kWh/kg). What’s more, the water permeation can be controlled by membrane materials and pore structures.
研究领域:
化学工程
·
生物技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2013
·
IF 4.093
Guang Lu Han,Ke Zhou,Ao Nan Lai,Qiu Gen Zhang,Ai Mei Zhu,Qing Lin Liu
As a new type of filler for mixed matrix membranes (MMMs), metal–organic frameworks (MOFs) have received increasing attention. As a kind of MOFs, [Cu 2 (bdc) 2 (bpy)] n is successfully synthesized in this work and characterized using scanning electron microscopy (SEM), transmission electron microscopy (TEM), dynamic light scattering (DLS), wide angle X-ray diffraction (WAXRD), thermogravimetric analysis (TGA) and adsorption isotherms . [Cu 2 (bdc) 2 (bpy)] n is found to preferentially adsorb methanol (MeOH) over methyl tert -butyl ether (MTBE). For this reason, the [Cu 2 (bdc) 2 (bpy)] n is incorporated into sulfonated polyarylethersulfone with cardo (SPES-C) to form [Cu 2 (bdc) 2 (bpy)] n /SPES-C MMMs for the separation of MeOH/MTBE mixtures. Both the sorption selectivity and the diffusion selectivity are found to increase with the addition of [Cu 2 (bdc) 2 (bpy)] n leading to an increase in the separation factor. With increasing [Cu 2 (bdc) 2 (bpy)] n loading from 5 to 20 wt%, the flux increased up to 0.288 kg m −2 h −1 at 20 wt% loading. A threshold of [Cu 2 (bdc) 2 (bpy)] n loading is approximately 20 wt% where the flux remains almost constant regardless of further increasing the [Cu 2 (bdc) 2 (bpy)] n content. This work demonstrates an improved performance of the [Cu 2 (bdc) 2 (bpy)] n /SPES-C MMMs for the separation of MeOH/MTBE mixtures.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Nano Energy
·
2019
·
IF 15.548
Xiaodong Huang,Zhen Zhang,Xiang-Yu Kong,Yue Sun,Congcong Zhu,Pei Liu,Jinhui Pang,Lei Jiang,Liping Wen
Nature is the source of human being's creativity and always inspires people to break through the existing bottleneck of science and technology. Electric eel (Electrophorus electricus) relying on ion channel in electrocyte can convert salinity gradient energy to electricity power with potentials of ~600 V to stun prey and ward off predators. Inspired by biological ion channels, artificial nanochannels have been extensively explored to mimic the control of ion flow in nanosize confinement space and apply in salinity gradient power generation. In this paper, polyether sulfone/sulfonated polyether sulfone (PES/SPES) membranes with large amount of nanochannels are constructed by using phase separation method to be applied in the salinity gradient power generation field. The content of SPES, the concentration of casting solution , and the thickness of prefabricated membrane were taken into account to control the structural and surface charge distribution of membrane. The prepared serials PES/SPES membrane with nanopore structure display much proper cation selectivity, excellent ion conductivity and output power density (reach up to 2.48 W/m 2 ) for salinity gradient power generation. In addition, the proposed membrane with low cost and easy casting process shows great potential for the practical application in salinity gradient power generation.
研究领域:
材料科学
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能源技术
·
仿生学
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2024
·
IF 3.8
Fangli Zhang,Miao Fu,Yu Huang,Rizhi Chen,Enrico Drioli,Zhaohui Wang,Zhaoliang Cui
Sulfonated poly(ether sulfone) (SPES) has high water vapor permeability and selectivity, and permeability is a key characteristic that determines the dehumidification performance. The excellent properties of SPES make it a favorable competitor for dehumidification materials. In order to obtain SPES, PES must be sulfonated. The effect of the degree of sulfonation on the structure and properties of SPES dense membranes manufactured by the solvent evaporation method was studied, and the prepared membranes with different degrees of sulfonation were applied in the dehumidification process to investigate the effect of the degree of sulfonation on the dehumidification performance. The results show that the hydrophilicity (contact angle and water absorption) of the SPES dense membrane is stronger with the higher degree of sulfonation. On the other hand, the mechanical strength of SPES membranes showed the opposite trend, because the polymer degraded during the sulfonation reaction, contributing to a decrease in the mechanical strength of SPES membranes. During the dehumidification process, the dehumidification performance of SPES membranes was significantly improved with the increase of the sulfonation degree, and the dehumidification efficiency and water vapor permeation flux of the 50% SPES dense membrane were the best, which were 42.8% and 13.4 × 10–6 kg·m–2·h–1, respectively.
研究领域:
材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2026
·
IF 9.2
Jiale Zhao,Yuhang Wang,Lingwei Li,Yao Wang,Xiaoliang Zhang,Bihai Su,Feibo Li,Xiaojing Wang,Linlin Shi,Xiaohong Gao,Zhixiao Zhang,Jingbo Mu,Yanming Wang
Sulfonated polyethersulfone (SPES) has garnered extensive attention owing to its outstanding hydrolytic stability. However, the low proton conductivity of pristine SPES presents a challenge for its application in PEM. In this work, a series of composite membranes were fabricated by incorporating 1,3-propanesultone-modified UiO-66-NH 2 , which serves as a prospective filler in the polymer matrix. Comprehensive characterization of the composite membranes was conducted. The composite membrane containing 3 wt% S-UiO-66-NH 2 shows a tensile strength of 56.54 MPa and a proton conductivity of 169.3 mS/cm at 80 °C and 100% RH. Compared with the neat SPES membrane (42.26 MPa and 66.7 mS/cm under the same conditions), these values correspond to enhancements of 33.79% and 153.8%, respectively. The obvious elevation can be attributed to the abundant –COOH, –NH 2 , –SO 3 H groups in S-UiO-66-NH 2 and the hydrogen bonding involving –SO 3 H, which together provide abundant proton transport sites within the composite membrane. Meanwhile, hydrogen bonds not only provide proton transport channels but also establish a cross-linked proton transport network in the membrane. The improved structure reinforces interfacial adhesion between S-UiO-66-NH 2 and the polymer matrix, which contributes to enhanced mechanical properties. This study proposes a new strategy for developing high-performance proton exchange membranes, laying the foundation for the future application of SPES-based fuel cells.
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DOI
高影响因子
POLYMERS FOR ADVANCED TECHNOLOGIES
·
2020
·Vol. 31
·期 7
·1571-1580
·
IF 2.578
Xianlin Xu,Zhufeng Shao,Lei Shi,Bowen Cheng,Xuan Yin,Xupin Zhuang,Youbo Di
Effective proton conducting sites and establishing proton channels are two critical factors in developing high-performance proton exchange membranes. This study first establishes a strategy in designing effective proton conducting channels for Nafion by using solution blowing of sulfonated polyethersulfone (SPES) nanofibers containing CC3, which is an emerging porous organic cage that possesses the advantages of dissolvable organic solvents and high proton conduction from its interconnected three-dimensional pore structure. Our strategy results in SPES nanofiber networks with CC3 uniformly involved in and composite membranes with Nafion-filled interfiber voids. Benefiting from such structural features, the composite membrane exhibits high proton conductivity (0.315 S cm −1 at 80°C and 100% RH), low methanol permeability (0.69 × 10 −7 cm 2 S −1 ), excellent water absorption, thermal and dimensional stability, and single-cell performance. This study provides not only a valuable reference for the application of CC3 but also a new idea for establishment of proton transfer channels.
研究领域:
材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
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2020
·
IF 7.183
Ruoxi Wang,Xueting Zhao,Youyou Lan,Lifen Liu,Congjie Gao
Superhydrophilic and underwater superoleophobic membranes have recently attracted increased attention in oily wastewater treatment because of their potential to promote membrane permeability and minimize membrane fouling . Despite recent advances, the manipulation of membrane superwettability is usually achieved by coating functional layers on commercial hydrophobic porous substrates. The direct fabrication of superhydrophilic and underwater superoleophobic microporous membranes still remains a challenge. In this work, we provide a new in situ metal-polyphenol interfacial assembly strategy and prepare a new type of superwetting PES/SPES/MPN membranes. In the phase inversion of membrane formation, the coordination assembly of tannic acid (TA) and transition metal ions takes place alone with the solvent/nonsolvent exchange, resulting in the in situ deposition of metal-polyphenol networks (MPNs) on as-prepared polyether sulfone (PES)/sulfonated polyether sulfone (SPES) membranes. The PES/SPES/MPN membranes exhibit hierarchical surfaces and bi-continuous pores, and the in situ deposited MPNs provide hydrophilic bases. Among them, the PES/SPES/TA-Fe 3+ membrane showed the highest superhydrophilicity and underwater superoleophobicity. Thanks to the excellent superhydrophilicity, the water flux of PES/SPES/TA-Fe 3+ membrane can reach 4423 Lm −2 h −1 . Moreover, the PES/SPES/TA-Fe 3+ membrane exhibits high-performance for oil-in-water emulsion separation with high flux (>1500 Lm −2 h −1 ), excellent oil rejection (>99.5%) and reliable enhanced antifouling and recycling performance. This study provides a novel and facile strategy for the direct fabrication of superwetting microporous membranes, and predicts the potential application of PES/SPES/MPN membranes in oily wastewater treatment.
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Yutong Qin,Yingbo Chen,Yongyan Wu,Haowei Bai,Yongxiang Shi
Currently, in the field of dye wastewater treatment, loose nanofiltration membranes generally suffer from low flux and are prone to fouling. Moreover, compared to ultrafiltration membranes, they exhibit a certain retention rate for salts, which is not conducive to the efficient separation of dyes and salts. Therefore, there is an urgent need to develop membranes with high flux and high efficiency in separating dyes from salts. In this study, a phase-inversion-engineered blend membrane comprising polyether sulfone (PES) and sulfonated polyether sulfone (SPES) is reported, which forms a hydrophilic surface layer and compositionally graded substructure. Glycerol was used to modify the membrane, acting as both a lubricant and pore size regulator. By forming hydrogen bonds (intermolecular forces) with the polymer, it improved film formation properties and pore structure, enhanced hydrophilicity, and further increased water flux. Scanning electron microscopy, surface zeta potential, and fully automatic water contact angle test were used to characterize the surface and cross-sectional morphology, surface electronegativity, and hydrophilic of the loose nanofiltration membrane. The pure water flux of the membrane with a solid content of 35% and glycerol addition of 0.1 wt% increase from the original 65.31 L m −2 ·h −1 ·bar −1 to 104.16 L m −2 ·h −1 ·bar −1 . It achieves near-complete rejection (>96%) of multiple dyes including Congo red, Acid Blue 83, Coomassie Brilliant Blue G-250, and Rose Bengal, while maintaining ultralow salt rejection (Na 2 SO 4 : 16.86%; NaCl: 2.86%; MgSO 4 : 2.42%; MgCl 2 : 0.26%)—indicating effective size and charge-based selectivity. This work establishes a simple yet effective glycerol-mediated strategy for fabricating high-flux blend membranes with precise molecular discrimination, offering great potential for dye desalination and resource recovery in textile effluent treatment.
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Zezhen Zhang,Shuman Feng,Mengqing Ren,Haolan Xiao,Shanjun Gao,Lili Wu
Precisely controlling pore structure and surface chemistry in ionic polymer membranes during nonsolvent induced phase separation (NIPS) remains challenging. Here, SPES/PES blend membranes were fabricated by systematically varying salt type and concentration in the coagulation bath, showing that cation-anion valence matching, besides salt concentration, also regulates membrane structure during NIPS. Experimental results showed that, relative to pure water, salt-containing baths slowed phase separation and yielded denser membranes, with a stronger effect at higher salt concentrations. Valence-matched salts produced smaller surface pores than valence-mismatched salts (Na 2 SO 4 and MgCl 2 , 22.79 and 19.62 nm, respectively), whether compared at equal concentration (0.1 M: NaCl 16.74 nm, MgSO 4 13.73 nm) or equal ionic strength ( I = 0.3: NaCl 11.26 nm, MgSO 4 15.14 nm). This trend may be related to stronger SPES chain aggregation in valence-matched salt solutions. Salt baths suppressed SPES loss into the coagulation bath, thereby enriching surface sulfonate groups and improving hydrophilicity. The membrane prepared in 0.1 M MgSO 4 exhibited excellent separation performance (>99% BSA, 96% Lyz, and 97% MB rejection) and enhanced mechanical strength (5.97 MPa). This pore-forming-agent-free strategy provides a simple route to high-performance functionalized membranes.
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DOI
高影响因子
Biomaterials Science
·
2023
·
IF 6.6
Tingting Zhao,Ting Shu,Jinrong Lang,Ziyu Cui,Ping Li,Shi Wang
Nitric oxide (NO) is a crucial cell-signaling molecule utilized in numerous physiological and pathological processes. Monitoring cellular levels of NO requires a sensor with sufficient sensitivity, transient recording capability, and biocompatibility. Owing to the large surface area and high catalytic activity of the metal–organic framework, Fe–BTC was used for the modification of screen-printed electrodes (SPEs). This study investigates the electrochemical sensing of NO on modified SPEs. Additionally, the introduction of a cell-adhesive molecule, arginine–glycine–aspartate peptide (RGD), considerably improved the cytocompatibility, resulting in superior cell attachment and growth on the SPE. The Fe–BTC/RGD-modified SPE (Fe–BTC/RGD/SPE) exhibited electrocatalytic NO oxidation at 0.8 V, demonstrating a linear response with a detection limit of 11.88 nM over a wide concentration range (0.17–47.37 μM) and a response time of approximately 0.9 s. Subsequently, the as-obtained Fe–BTC/RGD/SPE was successfully utilized for the real-time detection of NO released from human endothelial cells cultured on the electrode. Therefore, the study undertaken shows remarkable potential of Fe–BTC/RGD/SPE for practical applications in biological processes and clinical diagnostics.
研究领域:
生物医学工程
·
电化学
·
细胞生物学
·
分析化学
·
生物技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Energy Materials
·
2022
·
IF 6.959
Maoxia Yang,Baiqing Zhao,Jianying Li,Shaomin Li,Gen Zhang,Shiqi Liu,Yanhua Cui,Hao Liu
Solid polymer electrolytes (SPEs) are flexible, low cost, and easily scalable for battery manufacturing. These merits make SPEs one of the most practical solid-state electrolytes. Poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP), which has good mechanical properties and good thermal stability, is considered a promising polymer for SPEs. However, PVDF-HFP is unstable due to the dehydrofluorination side reaction when PVDF-HFP-based electrolytes cycle with Li metal. This reaction leads to the deterioration of the electrolyte–electrode interface. In this work, the PVDF-HFP polymer electrolyte is modified with LiOH during the synthesis of SPEs (pre-dehydrofluorination). The modified electrolyte delivers significantly enhanced stability toward the Li metal anode. The electrochemical stable window is extended from 4.75 to 5.00 V, and the stable cycle time of the galvanostatic test of Li symmetric cells at 0.1 mA cm–2 increases from about 100 h to over 500 h. Ex situ scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS) analyses indicate that the polymer degradation is suppressed after modification, and a stable interface containing more LiF and inorganic sulfur compounds forms between the electrolyte and Li metal; the interface could effectively suppress Li dendrite growth. Combining electrochemical results with ex situ SEM and XPS analysis, it is observed that the pre-dehydrofluorination is the reason for inhibiting polymer degradation and suppressing Li dendrite growth toward the Li metal anode. These findings will promote the development of safe all-solid-state Li metal batteries.
研究领域:
材料科学
·
电化学
·
电池技术
·
固态电解质
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Minhui Liao,Yang Zhou,Xunchang Jiang,Renjie Wan
High safety, high ion conductivity, and stable interface contacts are of significant importance for the application of solid-state electrolytes (SSEs) in solid-state lithium metal batteries (SSLMBs). In this study, SSEs with high ion conductivity and safety were constructed by in-situ polymerization of poly butyl acrylate (PBA) based electrolytes in the three-dimensional (3D) pores of a polyvinylidene fluoride (PVDF) nanofiber membrane, and embedded with ion conductor succinonitrile (SN), fluorinated ethylene carbonate (FEC), and imidazolium-based ionic liquid (IL). The test results and microscopic structural analysis indicate that SN is uniformly dispersed in PVDF, effectively reducing the crystallinity of solid polymer electrolytes (SPEs) and constructing a 3D interconnected lithium-ion conduction network. Consequently, an ion conductivity of 4.89 mS cm −1 was achieved at 25°C. Meanwhile, density functional theory (DFT) calculations demonstrated that imidazolium-based ionic liquid can adjust the dissolution characteristics of Li + through weak interactions with the polymer framework and strong coordination with TFSI - . X-ray photoelectron spectroscopy (XPS) characterization revealed that the imidazolium-based ionic liquid can form a stable solid electrolyte interface enriched with Li 3 N on the lithium-metal surface. The resulting SPEs demonstrated excellent ion conductivity, a high Li + transfer number (t Li + = 0.739), and a nanofiber-reinforced interpenetrating framework with a tensile strength of 17.15 MPa. Furthermore, the LiFePO 4 (LFP)||Li battery equipped with PBA-PVDF-SN (modified with IL) exhibited excellent electrochemical performance at room temperature with a capacity retention of 87.4 % after 800 cycles at 0.5C.
研究领域:
材料科学
·
电化学
·
电池技术
·
聚合物化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）