Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 5
·123948
·
IF 7.5
Fatang Liu,Chang Dong,Xinran Wang,Yanhua Gao,Huaiyuan Wang,Xingyi Shi
Conventional polymer membranes are widely employed in oily wastewater treatment owing to their high porosity and permeability. However, they always suffer from irreversible fouling during operation, resulting in performance degradation and eventually disposal, which raises significant environmental and economic concerns. Here, we present a strategy for fabricating recyclable and repairable superhydrophilic membranes. Polymer powders (PVDF, PES, PAN) were first modified with dopamine, and then fabricated into membranes via the non‑solvent induced phase separation method. The resulting membrane exhibited superhydrophilicity and underwater superoleophobicity, achieving over 98.7% separation efficiency for various oil-in-water emulsions, along with excellent antifouling properties, pH stability, chemical durability, mechanical strength, and salt tolerance. Notably, for localized damage, simple and efficient in situ repair methods can be utilized to repair the damaged area with substantial performance recovery. While severely damaged membranes can achieve effective regeneration by dissolution in organic solvent followed by recasting. This work offers a sustainable approach for membrane recycling and repair, addressing key challenges such as non-recyclability and performance deterioration in membrane technology.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Shibin Nie,Kexin Yang,Jinian Yang,Jingwen Wang
Epoxy resin (EP) is a versatile material widely used in fields such as electronic encapsulation, coatings, adhesives, and composites. The targeted assembly of nanomaterials to optimize the flame retardancy, mechanical properties, and interfacial properties of composite materials is a prominent research hotspot in the field of EP. Therefore, a hierarchical sea-urchin inspired architecture (NiPS@LDH), based on layered double hydroxide (LDH) nanosheets grown on nickel phyllosilicate (NiPS), was rationally constructed as a functional filler for EP with a view to building high-performance EP composites. The addition of 1 wt% NiPS@LDH increased the tensile strength, modulus of elasticity, and elongation at break of EP by 44.1 %, 27.6 %, and 66.2 %, respectively, showing excellent strengthening and toughening effects. Meanwhile, under dry friction conditions, the wear rate of the composites was 0.86 mm 3 ·N −1 ·m −1 , reduced by 87.8 % compared to that of pure EP, indicating excellent wear resistance. Besides, the pHRR, THR, pSPR, TSP, pCO and pCO₂ of EP/NiPS@LDH-3 composites were found to be significantly reduced by 54.0 %, 61.9 %, 50.7 %, 54.4 %, 51.2 %, and 58.2 %, respectively. The LOI value of the composites increased to 26.4 %, and the maximum weight loss (R max ) was reduced by 27.7 %. This study provides an innovative strategy for the targeted assembly of nanomaterials, paving the way for the preparation of high-performance EP nanocomposites.
研究领域:
材料科学
·
纳米技术
·
复合材料工程
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DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2025
·
IF 9
Chunli Liu,Lei Zhu,Yixin Zhang,Wanwan Hu,Yongqian Shen,Haize Jin,Haiyan Wang,Wenqing Niu
The trade-off between membrane permeance and solute rejection is a persistent challenge in membrane filtration, where higher permeance typically compromises rejection performance. To overcome this limitation, we developed a one-step fabrication method for an integrally skinned asymmetric tight ultrafiltration membrane via a polyion complex reaction-assisted non-solvent induced phase separation process (PIC-assisted NIPS). A reactive hydrolyzed polyacrylonitrile (H-PAN) matrix was used to prepare the dope solution, while an aqueous solution of polyethyleneimine (PEI)/graphene oxide (GO) soluble complexes served as the coagulation bath. During phase separation, the PEI/GO complex further participates in polyelectrolyte complexation with H-PAN, resulting in the formation of a dense selective layer composed of HPAN/PEI/GO on membrane surface, enabling simultaneous high permeance and rejection. Subsequent crosslinking with glutaraldehyde further stabilized the membrane structure. The PEI content and molecular weight in the complexes critically influenced the skin layer thickness and separation performance. The optimal membrane, fabricated with 0.4 wt% PEI-10000 in the coagulation bath, exhibited exceptional performance: a water permeance of 226.1 ± 0.4 L·m −2 ·h −1 ·bar −1 , 99.8 ± 0.1 % rejection of Congo Red, and 3.2 ± 0.3 % NaCl rejection. This study presents a facile and efficient strategy for fabricating high-performance tight ultrafiltration membranes for dye removal from wastewater.
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高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2022
·
IF 10.53
Hang Yu,Dajian Cai,Shiyang Li,Congjie Gao,Lixin Xue
Tight ultra-filtration (TUF) membranes with in-situ grown zeolitic imidazole framework (ZIF) particles embedded in and packed under porous polysulfone (PSF) separating layers were prepared using non-solvent induced phase separation (NIPS) processes. Imidazole ligands contained in casting solutions were released and reacted with divalent Zn 2+ cations pre-loaded on non-woven fabric supporting layers. The capillary filling pore size and molecular-weight-cut-off (MWCO) Stokes solute rejection pore size of the formed ZIF/PSF TUF were tuned by varying the loading levels of Zn (II), polyvinylpyrrolidone (PVP) and imidazole, as well as the NIPS reaction time. With thinned PSF separating layer (200–500 nm) and embedding water permeating short-cuts from the ZIF particles, ZIF/PSF TUF membranes showed 7 times higher water permeance (up to 250 L/(m 2 h bar)) and greatly enhanced dye/salt retention selectivity, bearing high potential for applications in dye and textile waste water treatment processes.
研究领域:
膜科学
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环境工程
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材料科学
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
·
IF 8.6
Huarong Yu,Siyuan Shangguan,Haiyang Yang,Hongwei Rong,Fangshu Qu
Poly(vinylidene fluoride) (PVDF) is one of the most used membrane materials in the water industries, and the PVDF membrane can be fabricated majorly through non-solvent induced phase separation (NIPS) and thermally induced phase separation (TIPS). The differences in membrane aging of NIPS-PVDF and TIPS-PVDF remain unclear. In this study, the agings of commercially available NIPS-PVDF and TIPS-PVDF membranes were investigated in the pilot-scale MBRs experiment as well as in the batch soaking tests. The raw PVDF powders in different crystalline polymorphs were also subjected to aging tests to examine the relation between PVDF polymorphous structure and aging. The results showed that the NIPS-PVDF membrane experienced more severe aging in the pilot-scale MBR experiment in comparison with the TIPS-PVDF membrane. Acid aging dislodged and eliminated the additives in the membrane, but did not attack the PVDF. NIPS-PVDF membrane was the dominant β PVDF phase, which was more susceptible to dehydrochlorination in alkaline oxide aging. The thin top layer in the asymmetric structure of the NIPS-PVDF membrane resulted in its vulnerability against alkaline oxide aging. The α PVDF phase and the symmetric structure of the TIPS-PVDF membrane contributed to its greater stability in alkaline oxide aging. Overall, the results can provide a basis for selecting a chemical cleaning strategy for PVDF membranes, and for improving the anti-aging characteristics of the PVDF in the membrane fabrication.
研究领域:
环境科学
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材料科学
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高影响因子
IONICS
·
2021
·Vol. 27
·期 12
·4927-4936
·
IF 2.817
Liu Jiuqing,Song Feifei,Li Qihou,Li Jie,Hong Zikun,Wang Cheng,Liu Meng,Bai Lishun,Zeng Fanli
The polymer separator is part of the gel polymer electrolyte (GPE) and plays a crucial role in battery. In this study, a novel PES-based separator for lithium-oxygen batteries was prepared using non-solvent-induced phase separation (NIPS) technique firstly and modified by doping Al 2 O 3 nanoparticles. It is proved that the properties of the PES/Al 2 O 3 separator are affected by the presence of Al 2 O 3 nanoparticles. The results show that the PES/Al 2 O 3 separator with Al 2 O 3 content of 2 wt% and 4 wt% has lower crystallinity, higher electrolyte uptake, and better mechanical properties and thermal stability than PES-based separator without Al 2 O 3 . The resulting PES/Al 2 O 3 separator containing 4 wt% Al 2 O 3 has higher ionic conductivity (0.49 mS cm −1 ) and lithium ions transference number (0.28). Consequently, the assembled batteries with the PES/Al 2 O 3 separator containing 4 wt% Al 2 O 3 exhibit excellent cycling performance (75 cycles, 1000 mAh g −1 at 0.05 mA cm −2 ). Therefore, PES/Al 2 O 3 separator has a significance meaning in the research of high-safety and long-cycle lithium-oxygen battery.
研究领域:
材料科学
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电化学
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电池技术
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高影响因子
JOURNAL OF MEMBRANE SCIENCE
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2022
·
IF 10.53
Lunhao Zhi,Siyu Li,Xueqin He,Yunbo Feng,Chong Cheng,Shuang Li,Shudong Sun,Changsheng Zhao
Extracorporeal membrane oxygenation (ECMO) is one of the most important supporting therapies for patients with severe cardiopulmonary failure, and the core component of ECMO is the membrane oxygenator . However, in clinical application, the membrane oxygenator faces a dilemma in balancing anticoagulation and hemorrhage risks, which restrains the service life of membrane oxygenator and affects patients’ safety seriously. In this work, we introduce poly (1-vinyl-2-pyrrolidone) (PVP) and poly (acrylic acid) (PAA) into polyethersulfone (PES) membranes simply by in-situ crosslinking polymerization and nonsolvent induced phase separation (NIPS) method. All the modified membranes exhibit favorable hemocompatibility with prolonged activated partial thromboplastin time (APTT) (>10 s). Besides, the introduction of PAA can improve CO 2 and O 2 permeabilities simultaneously (increased by 36.57% and 30.86% at maximum, respectively, compared with pristine PES membrane). Finally, an ECMO-simulated gas-liquid contactor circulation device is designed, and the modified membranes show better oxygenation performance and CO 2 removal performance. The membrane modification and fabrication methods in this work are simple, low-cost, and easily industrialized. The work has practical guiding significance for the subsequent membrane research and application toward oxygenators.
研究领域:
生物医学工程
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材料科学
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医疗器械
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Jing Gao,Liangyuan Qi,Liang Chen,Wenyue Guo,Bicheng Lin,Zefan Feng,Suhong Li,Yuan Hu,Fukai Chu,Weiyi Xing
The development of zero-power radiative cooling technology in buildings is of great significance for coping with global warming. However, the absorption of thermal radiation from the surrounding environment cannot be effectively avoided by conventional broadband emitters, resulting in cooling performance degradation. Furthermore, the fire safety standards established for architectural coatings are generally not met by conventional radiative cooling coatings. Here, the phosphorus flame retardants aluminum diethylphosphonate (ADP) was introduced into PVDF-HFP coating through a non-solvent-induced phase separation (NIPS) to enhance both the cooling performance and fire safety. The composite coating demonstrates excellent solar reflectance (97.4 %) and mid-infrared emissivity (95.7 %), owing to its unique hierarchical porous structure and the vibrational properties of C C, F-C-F, P O, and P O bonds. Therefore, compared to the absence of coatings, the porous coating significantly enhances the cooling effect, resulting in a temperature reduction of 6.6 °C in an outdoor cooling test. With the introduction of the flame retardant ADP, the temperature of composite coating decrease is further extended to 8.1 °C, accompanied by a remarkable cooling efficiency of 129.4 W/m 2 . Concurrently, the addition of ADP not only reduces the peak heat release rate during combustion (58.3 %) but also significantly inhibits the release of the total smoke product, thus greatly improving fire safety performance. The simplicity of this manufacturing process, coupled with its exceptional fire resistance and optical properties facilitates the practical implementation of radiative cooling materials in airports, buildings, grain silos, and other applications.
研究领域:
材料科学
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建筑节能
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环境科学
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消防安全工程
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纳米技术
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光学工程
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高分子科学
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气候变化缓解
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高影响因子
Journal of Environmental Chemical Engineering
·
2022
·
IF 7.968
Shuang Zheng,Shujuan Yang,Zhaofeng Ouyang,Tianya Chen,Yong Kuang,Haixing Shen,Fei Yang,Yong Zhang
To obtain ultrafiltration (UF) membranes with excellent separation performances and antifouling properties, regenerated cellulose (RC) membranes with intrinsic hydrophilicity and dense structures immensely attract the attention of researchers. Herein, a novel modified RC membrane, which has high water permeability and antifouling capability, is prepared using cellulose acetate (CA) via non-solvent induced phase separation (NIPS) and green hydrolysis technology . The as-prepared membranes were investigated comprehensively by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR) analyses and protein adsorption, etc. As a result, the RC membranes showed higher hydrophilicity (WCA=25.95°), thus they possessed a lower protein adsorption value of 1.9 ± 0.1 μg/cm 2 . The filtration performances were evaluated by bovine serum albumin (BSA) and endotoxin separation with dead-end filtration system. The results exhibited greater selectivity of RC membranes that BSA rejection over 98% and endotoxin remove below 0.25 EU/mL, and excellent anti-fouling properties that the flux recovery rate (FRR) over 95% and even as high as 100%. Simultaneously, the common polyethersulfone (PES) composite membranes were prepared via NIPS technology, and comprehensively compared with RC membranes to provide a theoretical basis for the practical application of RC membranes in pharmaceutical and biotechnological industries.
研究领域:
膜科学
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材料科学
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生物技术
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制药工程
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高影响因子
JOURNAL OF ENVIRONMENTAL MANAGEMENT
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2023
·
IF 8.7
Yi Lu,Fangyuan Peng,Yingyang Wang,Zhaoguang Yang,Haipu Li
Soil antimony (Sb) pollution is a global concern that threatens food security and human health. Boehmeria nivea L. (ramie) is a promising phytoremediation plant exhibiting high tolerance and enrichment capacity for Sb. To reveal the molecular mechanisms and thus enhance the ramie uptake, transport, and detoxification of Sb with practical strategies, a hydroponic experiment was conducted to compare the physiological and transcriptomic responses of ramie towards antimonite (Sb(Ⅲ)) and antimonate (Sb(Ⅴ)). Phenotypic results showed that Sb(Ⅲ) had a stronger inhibitory effect on the growth of ramie. Root Sb content under Sb(Ⅲ) was 2.43 times higher than that in Sb(Ⅴ) treatment. Based on the ribonucleic acid sequencing (RNA-Seq) technique, 3915 and 999 significant differentially expressed genes (DEGs) were identified under Sb(Ⅲ) and Sb(Ⅴ), respectively. Transcriptomic analysis revealed that ramie showed different adaptation strategies to Sb(Ⅲ) and Sb(V). Key DEGs and their involved pathways such as catalytic activity , carbohydrate metabolisms , phenylpropanoid biosynthesis, and cell wall modification were identified to perform crucial roles in Sb tolerance and detoxification. Two heavy metal-associated domain-type genes, six heavy metal-associated isoprenylated plant proteins, and nine ABC transporters showed possible roles in the transport and detoxification of Sb. The significant upregulation of NRAMP5 and three NIPs suggested their roles in the transport of Sb(V). This study is the basis for future research to identify the exact genes and biological processes that can effectively enhance Sb accumulation or improve plant tolerance to Sb, thereby promoting the phytoremediation of Sb-polluted soils.
研究领域:
环境科学
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植物科学
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分子生物学
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植物修复
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DOI
PubMed
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2024
·
IF 8.4
Gansheng Liu,Christine N. Matindi,Zhiyou Pu,Sania Kadanyo,Zhenyu Cui,Jianhua Yang,Jianxin Li
Zwitterionic polysulfone (PSf) ultrafiltration membranes were fabricated by non-solvent phase separation (NIPS) method. Herein, a casting solution at 45 °C was developed by using chloromethylated polysulfone (CMPSf), N, N-dimethylacetamide (DMAc) as a solvent, 4-amino-benzenesulfonic acid monosodium salt (ABS) as a cross-linking agent, and Na 2 CO 3 as an acid binder. Simultaneously, the occurrence of the electrophilic substitution reaction between ABS and CMPSf caused the formation of ABS grafting CMPSf (CMPSf-g-ABS). After a specific reaction time, the casting solution was applied to cast membranes, which were subsequently submerged in coagulation bath. A zwitterionic ultrafiltration (ZUF) membrane was obtained using NIPS following the treatment of hydrochloric acid (HCl) solution (1 M mol). Because of the formation of cross-linked CMPSf-g-ABS, the results revealed that the casting solution's viscosity increased sharply from 425.4 mPa s at the initial stage (0 h) to 4810.8 mPa s (22 h). Interestingly, the morphology of the membranes with an asymmetric finger-like structure at 0 h gradually transformed to a gradient sponge-like structure after 22 h. Specifically, the ZUF membrane (M22-H) with the gel fraction of 72.1% procured after the reaction of 22 h demonstrated a low water contact angle (40.17°) and a high pure water permeance (420.4 L m −2 h −1 bar −1 ). The M22-H also exhibited a high flux recovery rate (FRR) (90.2%), bovine serum albumin (BSA) rejection (>95%), and Escherichia coli ( E. coli ) antibacterial rate (96.2%). The surface of the ZUF membrane with numerous zwitterionic groups enhances the hydration layer's energy (i region <16 nm) and creates a thick hydration layer (ii region >16 nm), causing a significant improvement in the antifouling performance. This research opens new avenues for preparing zwitterionic functional membranes.
研究领域:
材料科学
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膜技术
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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
KOREAN JOURNAL OF CHEMICAL ENGINEERING
·
2020
·Vol. 37
·期 3
·497-504
·
IF 2.69
Qiao Sen,Cao Hongjie,Yang Yue,Jin Ruofei,Zhou Jiti
Membrane fouling is the main bottleneck that hinders the applications of membrane bioreactors (MBRs). 4,5-Dichloro-2-n-octyl-4-isothiazolin-3-one (DCOIT), as an environmentally-acceptable antifouling biocide, was mixed with Polyvinylidene fluoride (PVDF) to fabricate hollow fiber membrane via non-solvent induced phase separation (NIPS), which was able to effectively improve the antifouling performance of the membranes in this work. Overall research of the prepared membrane revealed that membranes with 3 wt% DCOIT exhibited the optimum antifouling performance. With the addition of DCOIT, hydrophilicity and pure water flux of 3 wt% DCOIT membranes maintained remarkable improvement by 22.9% and 64.6% than that of membranes without DCOIT. Meanwhile, the surface morphologies of 3 wt% DCOIT membranes were smoother than the control group in terms of SEM and AFM images, which was beneficial to alleviate membrane fouling. In antifouling experiments, the flux variation rate of membranes with 3wt% DCOIT filtrated in bull serum albumin, sodium alginate and humic acid solution were 81.42%, 54.25%, 50.5%, while membrane without DCOIT were 64.6%, 24.72% and 29%, respectively. Similar results were obtained by filtrating anaerobic sludge for 24 h. The flux variations of 3 wt% DCOIT membranes were 59.4%, 47.8% and 46.0%, respectively in three stages. However, the flux variations of membranes without DCOIT were 44.8%, 36.7% and 19.8%, respectively, which showed better antifouling ability and higher flux recovery efficiency The novel membranes would provide some theoretical basis and technical support for the rational combinations in elevating the overall antifouling properties of membranes.
研究领域:
环境科学
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材料科学
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化学工程
·
生物技术
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高影响因子
危险品化学品经营许可证（带存储）