Ye Liang , Bo Zhang , Langhui Wu , Kangkang Jiang , Zhi Wang , Xinlei Liu
{"title":"Simultaneous enhancement of flux and selectivity of UiO-66 membranes for pervaporation via post-synthetic defect healing","authors":"Ye Liang , Bo Zhang , Langhui Wu , Kangkang Jiang , Zhi Wang , Xinlei Liu","doi":"10.1016/j.memsci.2024.123535","DOIUrl":"10.1016/j.memsci.2024.123535","url":null,"abstract":"<div><div>Zirconium-based metal-organic framework (Zr-MOF) UiO-66 is widely recognized as an exceptional candidate for fabricating high-performance membranes owing to its rich porosity, customizable chemistry and remarkable stability. However, exploration of accessible zirconium sources for UiO-66 membrane fabrication is not enough and eliminating the undesired defects occurring during synthesis is also imperative. In this work, 1.3 μm thick UiO-66 polycrystalline membranes were successfully fabricated using ZrOCl<sub>2</sub>·8H<sub>2</sub>O as the sole metal source. The undesired lattice defects were controlled at a low concentration level through utilizing post-synthetic defect healing method, leading to simultaneous enhancement of flux and separation factor of UiO-66 membranes for pervaporation test as the competitive permeation between different penetrants was reduced to a large extent. The finally obtained UiO-66 membranes exhibited exceptional performance, with the separation factor of around 10,000 for alcohol/ether separation, showing good potential for applying in industrial production processes.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"716 ","pages":"Article 123535"},"PeriodicalIF":8.4,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142720902","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Lu Xu , Weilin Feng , Chuanjie Fang , Minyuan Han , Liping Zhu
{"title":"Solvent resistant asymmetrical polyimide nanofiltration membranes prepared via combining surface chemical grafting with thermal-induced pore narrowing","authors":"Lu Xu , Weilin Feng , Chuanjie Fang , Minyuan Han , Liping Zhu","doi":"10.1016/j.memsci.2024.123526","DOIUrl":"10.1016/j.memsci.2024.123526","url":null,"abstract":"<div><div>Polymeric membranes with precise sieving and robust solvent resistance are desirable for molecular separation via organic solvent nanofiltration (OSN). Polyimide (PI) is a promising membrane-forming material used in OSN owing to its high thermal stability and excellent solvent resistance. However, effective methods constructing integrated ultrathin selective layer for asymmetrical PI membranes to achieve high separation accuracy and enhanced solvent resistance are rarely reported. In this work, we developed an integrally skinned asymmetrical OSN membrane by grafting tris(hydroxymethyl) aminomethane onto the PI ultrafiltration membranes, followed by a thermal annealing step at a temperature that is much lower than the glass transition temperature of PI. A dense skin layer was successfully created on the monoamine-modified PI membranes due to thermal-induced surface pore narrowing, companied by efficient intermolecular imidization. The optimised membrane exhibited acceptable and stable solvent permeance for ethanol (1.6 L m<sup>−2</sup> h<sup>−1</sup> bar<sup>−1</sup>) and acetonitrile (9.8 L m<sup>−2</sup> h<sup>−1</sup> bar<sup>−1</sup>). The typical membrane had a molecular weight cut-off of approximately 350 Da and demonstrated highly efficient separation of methyl orange from isatin in ethanol, indicating excellent molecular sieving properties. Moreover, the chemically crosslinked characteristic endowed the thermal-treated PI with remarkable stability of the permeation and separation performances in long-term OSN application. This work offers a convenient strategy to manufacture solvent-resistant polymeric membranes for highly-efficient molecular separation in organic solvent.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"716 ","pages":"Article 123526"},"PeriodicalIF":8.4,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142720904","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Xinya Wang , Ronggui Wang , Yongshuo Zhang , Juntong Meng , Wei Zhang , Ruirui Cao , Mingxing Chen
{"title":"Development and evaluation of antibacterial nanofiber membranes via coaxial electrospinning for enhanced air filtration performance","authors":"Xinya Wang , Ronggui Wang , Yongshuo Zhang , Juntong Meng , Wei Zhang , Ruirui Cao , Mingxing Chen","doi":"10.1016/j.memsci.2024.123524","DOIUrl":"10.1016/j.memsci.2024.123524","url":null,"abstract":"<div><div>As industrialization intensifies and the population soars, the challenge of air pollution escalates into a pressing concern. Electrospun nanofiber membranes, owing to their distinctive attributes including high specific surface area, porosity, and uniform pore size distribution, have emerged as promising candidates for air filtration. In this study, we successfully prepared ZnO@polyvinylidene fluoride-co-hexafluoropropylene (PVDF-HFP) antibacterial nanofiber membranes through a combined solvothermal and coaxial electrospinning approach. The structure and performance of these nanofiber membranes were systematically modulated by adjusting the shell feeding rate and zinc acetate dihydrate (Zn(Ac)<sub>2</sub>·2H<sub>2</sub>O) concentration. Specifically, an increase in the shell feeding rate led to a decrease in fiber diameter, accompanied by the proliferation of nano-beads, thereby contributing to a reduction in membrane pore size. Consequently, a heightened shell feeding rate correlated positively with both filtration efficiency and pressure drop. Furthermore, the incompletely reacted Zn(Ac)<sub>2</sub>·2H<sub>2</sub>O enhanced the conductivity of the spinning solution, facilitating a decrease in pore size and enhancing air filtration performance. In summary, when the shell feeding rate was 0.60 mL h<sup>−1</sup> and Zn(Ac)<sub>2</sub>·2H<sub>2</sub>O concentration was 1.5 wt%, the obtained ZnO@PVDF-HFP nanofiber membrane exhibited superior air filtration performance, with high filtration efficiency of 99.91 %, low pressure drop of 80.70 Pa and noteworthy quality factor of 0.08781 Pa<sup>-1</sup>. Notably, these membranes sustained their high filtration efficiency and low pressure drop even after 40 min of continuous testing, underscoring their exceptional stability. In addition, the obtained nanofiber membrane exhibited robust antibacterial activity against both <em>Escherichia coli</em> (<em>E. coli</em>) and <em>Staphylococcus aureus</em> (<em>S. aureus</em>), demonstrating their multifaceted potential. Our work not only simplifies the fabrication process of electrospun nanofiber membranes with superior air filtration and antibacterial properties but also highlights their potential as innovative alternatives to conventional air filter materials, poised for diverse practical applications.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"716 ","pages":"Article 123524"},"PeriodicalIF":8.4,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142720993","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yuting Liu , Yinyu Chen , Huiying Ding , Jingchuan Xue , Yang Yang , Xianhui Li
{"title":"Enhancing PPCP and salt separation in polyamide nanofiltration membranes with polydopamine and ZnO functionalized nanofiber support","authors":"Yuting Liu , Yinyu Chen , Huiying Ding , Jingchuan Xue , Yang Yang , Xianhui Li","doi":"10.1016/j.memsci.2024.123525","DOIUrl":"10.1016/j.memsci.2024.123525","url":null,"abstract":"<div><div>Achieving the removal of pharmaceuticals and personal care products (PPCPs) while selectively rejecting divalent cations like Ca<sup>2</sup>⁺ and Mg<sup>2</sup>⁺ without compromising water productivity and recovery remains a challenge for existing commercial nanofiltration (NF) membranes used in drinking water treatment. These challenges stem from the limited pore size and insufficient negatively charged surface density of conventional NF membrane. This study employed a polydopamine-coated nanofibrous membrane, uniformly embedded with in-situ grown ZnO nanoparticles, as a porous support layer. In the interfacial polymerization process, the fabricated substrate regulated the diffusion of aqueous monomers, thereby optimizing the polyamide layer on composite NF membrane with thinner thickness, stronger surface density, crumple structure and appropriate pore size. This resulting membrane demonstrated excellent PPCP rejection while maintaining high permeability to essential minerals. Under optimal conditions, the designed membrane achieved an impressive water flux at about 21 L m⁻<sup>2</sup> h⁻<sup>1</sup> bar⁻<sup>1</sup> and showed significant selectivity for PPCP and divalent cation, with diclofenac sodium rejection exceeding 90 % and Ca<sup>2</sup>⁺ rejection of below 20 %. The incorporation of ZnO nanoparticles enlarged the active filtration surface and created additional water pathways, resulting in a water permeation rate that was double that of a pristine NF membrane, without compromising PPCP/divalent cation selectivity. This work provides valuable insights and important correlations for developing NF membranes aimed at enhancing water production while preserving selectivity for PPCP/divalent cation.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"716 ","pages":"Article 123525"},"PeriodicalIF":8.4,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142720990","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jiwon Kim , Myeongjin Jung , Jae Won Choi , Minsu Kim , Jinhong Min , Dongjoon Rhee , Ki Chul Kim , Joohoon Kang , Dae Woo Kim
{"title":"Scalable assembly of functionalized molybdenum disulfide membrane for hydrogen-selective permeation via continuous slot-die coating","authors":"Jiwon Kim , Myeongjin Jung , Jae Won Choi , Minsu Kim , Jinhong Min , Dongjoon Rhee , Ki Chul Kim , Joohoon Kang , Dae Woo Kim","doi":"10.1016/j.memsci.2024.123511","DOIUrl":"10.1016/j.memsci.2024.123511","url":null,"abstract":"<div><div>Two-dimensional (2D) nanosheets can be desirable materials to fabricate membranes for ionic and molecular separation such as water purification, seawater desalination, solvent separation, and gas separation. Molybdenum disulfide (MoS<sub>2</sub>) can be a desirable candidate among the family of 2D nanosheets due to their exceptional physical properties, high stability, and well-defined scalable synthesis methods. In this work, a highly aligned MoS<sub>2</sub> layer is fabricated on a centimeter-scale by coating electrochemically exfoliated MoS<sub>2</sub> nanosheets <em>via</em> a continuous slot-die coating method. Particular, an additive to stabilize the resulting dispersion of exfoliated MoS<sub>2</sub> nanosheets further enlarges the capillary width of the stacked MoS<sub>2</sub> nanosheets, which enables the efficient H<sub>2</sub> permeation properties as 5.57 × 10<sup>−6</sup> mol m<sup>−2</sup> s<sup>−1</sup> Pa<sup>−1</sup> and 13 of H<sub>2</sub>/CO<sub>2</sub> ideal selectivity. Furthermore, this MoS<sub>2</sub>-based membrane exhibits high thermal stability. While the temperature varies, it shows stable and selective gas permeation properties over 10<sup>−6</sup> mol m<sup>−2</sup> s<sup>−1</sup> Pa<sup>−1</sup> H<sub>2</sub> permeance, while H<sub>2</sub>/CO<sub>2</sub> ideal selectivity remained at 150 °C for 7 days.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"716 ","pages":"Article 123511"},"PeriodicalIF":8.4,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142720909","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Can Zeng Liang , Fan Feng , Ji Wu , Tai-Shung Chung
{"title":"Elevating gas separation performance of Pebax-based membranes by blending with a PDMS-PEO block copolymer for CO2 capture and separation","authors":"Can Zeng Liang , Fan Feng , Ji Wu , Tai-Shung Chung","doi":"10.1016/j.memsci.2024.123528","DOIUrl":"10.1016/j.memsci.2024.123528","url":null,"abstract":"<div><div>Polymeric membranes have become an emerging technology for gas separation applications. High-performance and low-cost polymeric membranes are desirable for various industrial applications. Polymer blending is a simple and versatile method to improve the separation performance of membranes. In the present work, we have significantly improved the gas separation performance of the poly(ether-block-amide) (Pebax-1657) membrane by blending it with polydimethylsiloxane-polyethylene oxide (PDMS-PEO) block copolymers. The optimal Pebax-1657/PDMS-PEO blend membrane consists of 80 wt% of PDMS-PEO (Mn = 600 g/mol, ∼60 wt% of PEO content). In pure gas tests, it can elevate the CO<sub>2</sub> permeability of the neat Pebax-1657 membrane by about 13 folds (1300 %) from 119 to 1629 Barrer, while the ideal CO<sub>2</sub>/N<sub>2</sub> selectivity only decreases by around 25 % from 42 to 32. Interestingly, the corresponding ideal CO<sub>2</sub>/H<sub>2</sub> and CO<sub>2</sub>/CH<sub>4</sub> selectivities increase slightly to ∼10. The remarkable enhancements in gas separation performance arise from the strong increases in the solubility of polar gas CO<sub>2</sub> and solubility selectivity of CO<sub>2</sub>/non-polar light gas (e.g. N<sub>2</sub>) as well as a noticeable improvement in CO<sub>2</sub> diffusivity as the PDMS-PEO loading increases. The impressive improvements in gas separation performance coupled with the commercially available and affordable raw materials (Pebax-1657 and PDMS-PEO) render the Pebax-1657/PDMS-PEO blend membrane promising and attractive to the industrial deployments and applications for CO<sub>2</sub> capture and separation.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"716 ","pages":"Article 123528"},"PeriodicalIF":8.4,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142720994","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Haiyu Luo , Junzhi Li , Lili Tang , Yanan Li , Nan Xu , Wenlan Ji , Pei Nian , Shihao Zhang , Yibin Wei
{"title":"Photocatalytic self-cleaning NaTaO3@Ti3C2Tx MXene membranes for efficient antibiotics removal","authors":"Haiyu Luo , Junzhi Li , Lili Tang , Yanan Li , Nan Xu , Wenlan Ji , Pei Nian , Shihao Zhang , Yibin Wei","doi":"10.1016/j.memsci.2024.123529","DOIUrl":"10.1016/j.memsci.2024.123529","url":null,"abstract":"<div><div>Photocatalytic technology with high oxidative activity has been considered promising for eliminating fouling of nanofiltration (NF) membranes when used in organic pollutant removal. Herein, we report a photocatalytic self-cleaning NF membrane composed by two dimensional Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> MXene and NaTaO<sub>3</sub> nanoparticles with excellent permeability and antibiotics removal efficiency. Scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and atomic force microscopy (AFM) were used to verify the successful preparation of the photocatalytic self-cleaning membrane. The membrane with the NaTaO<sub>3</sub> nanoparticles loading of 8 mg (NM-8) exhibited excellent rejection (>99.67%) and water permeability (90.79–112.50 L m<sup>−2</sup> h<sup>−1</sup>·bar<sup>−1</sup>) for tetracycline hydrochloride (TC), ciprofloxacin (CIP), methylene blue (MB), and 2-mercaptobenzothiazole (MBT). The removal efficiencies of the membrane for TC, CIP, MB, and MBT during the photocatalytic degradation process were 75.18%, 70.13%, 90.04% and 93.12%, respectively. Moreover, the chemical and optical properties were investigated by zeta potential, water contact angle, and UV–vis spectrum. The mechanism of photodegradation of pollutants by the prepared NaTaO<sub>3</sub>@Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> MXene membranes was further elucidated. This work not only deepens the construction of photocatalytic NF membranes using two dimensional materials, but also provides a new strategy for the efficient removal of antibiotics from wastewater.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"716 ","pages":"Article 123529"},"PeriodicalIF":8.4,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142720908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Daqing Wu , Yiling He , Jingcheng Wu , Yi He , Wanwan Peng
{"title":"Photocatalytic self-cleaning holey graphene oxide membranes by a synergistic strategy of etching and intercalation for efficient dye separation","authors":"Daqing Wu , Yiling He , Jingcheng Wu , Yi He , Wanwan Peng","doi":"10.1016/j.memsci.2024.123514","DOIUrl":"10.1016/j.memsci.2024.123514","url":null,"abstract":"<div><div>By virtue of the unique percolation mechanism, graphene oxide (GO)-based membrane has been broadly trialed in the field of dye separation. However, the trade-off between permeability and selectivity, together with membrane contamination, has long limited its practical application. Herein, a synergistic strategy of etching and intercalation was applied to fabricate a novel composite nanofiltration membrane. Holey graphene oxide (HGO) was prepared via a simple solution processing method, which generated in-plane nanopores on GO nanosheets, resulting in improved permeability. To enhance the selectivity of the composite membrane, we intercalated polydopamine (PDA)-modified graphitic phase carbon nitride (g-C<sub>3</sub>N<sub>4</sub>) into HGO laminates. During the process, a skillful combination of efficient dye separation performance, satisfactory chemical stability and superior self-cleaning property were given to it. What can be found intuitively was that M<sub>2</sub> membrane (g-C<sub>3</sub>N<sub>4</sub>@PDA: HGO = 0.75:1) obtained an impressive pure water flux (49.6 L m<sup>−2</sup> h<sup>−1</sup>) and a good removal of various dyes (>99 %). The membrane structure was still intact after one month of continuous shaking in a harsh environment. Even after 60 h of operation (with visible light self-cleaning at 10 h intervals), the composite membrane still provided sustainable separation performance. Therefore, this collaborative strategy presents a facile and perspective approach for the fabrication of highly efficient GO-based membrane.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"716 ","pages":"Article 123514"},"PeriodicalIF":8.4,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142720788","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Peiwen Yan , Zhiyou Pu , Minghui Du , Xiaolong Ge , Jiawei Dong , Hong Wang , Jianxin Li , Zhenyu Cui
{"title":"Preparation of ceramic membranes with small pore size, narrow pore size distribution and investigation of oil-water separation mechanism","authors":"Peiwen Yan , Zhiyou Pu , Minghui Du , Xiaolong Ge , Jiawei Dong , Hong Wang , Jianxin Li , Zhenyu Cui","doi":"10.1016/j.memsci.2024.123522","DOIUrl":"10.1016/j.memsci.2024.123522","url":null,"abstract":"<div><div>To solve the problems of wide pore size distribution, complex preparation process, poor performance and low anti-fouling performance of commercial ceramic membrane prepared by sintering technology. In this study, the ceramic membrane (ACM-W) with small pore size (83 nm), narrow pore size distribution and high anti-fouling ability was prepared by coating the water glass (WG) + Al<sub>2</sub>O<sub>3</sub> slurry on commercial Al<sub>2</sub>O<sub>3</sub> ceramic membrane (ACM-0) by one-step. WG was used as an inorganic binder for bonding and pore plugging. The chemical structure of the membrane surface was characterized and analyzed. The bonding mode between WG and Al<sub>2</sub>O<sub>3</sub>, and the effect of WG on the surface microstructure of the membranes were investigated. The surface microstructure, pore size distribution and anti-fouling ability of membranes were revealed. The findings showed that the pore size of 83 nm accounted for 98.3 % of the ACM-W pore size distribution. The rejection for emulsified oil of 99.96 % and the flux recovery rate (FRR) of 98.7 % achieved for ACM-W, which indicated that ACM-W has excellent separation performance and anti-fouling ability. Based on the above results, combined with the size change of oil droplets before and after separation, wettability, surface charge and the cleaning process of the ACM-W, the anti-oil fouling mechanism of “charge repulsion & pore barrier” for the membrane was presented. This study introduces a novel idea for preparation of the ceramic membrane with high filtration accuracy and anti-fouling ability, and a fresh insight into the anti-fouling mechanism of ceramic membranes.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"716 ","pages":"Article 123522"},"PeriodicalIF":8.4,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142720775","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yuanhang Jin , Yu Xie , Haipeng Zhu , Jiangpu Nan , Fenjuan Xiangli , Gongping Liu , Wanqin Jin
{"title":"Fabrication of novel mixed-matrix membrane and its pervaporation process integration with distillation for energy-saving separation of DMC/methanol azeotropic mixture","authors":"Yuanhang Jin , Yu Xie , Haipeng Zhu , Jiangpu Nan , Fenjuan Xiangli , Gongping Liu , Wanqin Jin","doi":"10.1016/j.memsci.2024.123520","DOIUrl":"10.1016/j.memsci.2024.123520","url":null,"abstract":"<div><div>Separation of azeotropic mixtures is a typical energy-intensive process in chemical industry, in which pervaporation membrane process shows great potential in energy efficiency. However, the performance of commercial membranes such as polydimethylsiloxane (PDMS) is unattractive for practical application. Henein, for the first time, we employed microporous MAF-6 as a new filler incorporating into PDMS membrane for pervaporation separation of DMC/methanol azeotropic mixture. The resulting MAF-6/PDMS mixed-matrix membrane with the optimal filler size of 300 nm and filler loading of 12 wt% exhibited highly DMC permeability (651–811.5 Barrer) and selectivity (10.1–10.4) during 31 days continuous separation process, which fairly exceeds the state-of-the-arts membrane performance. A pervaporation-distillation coupled process was further proposed for the purification of DMC/methanol mixtures, showing 55.7 % of energy-saving compared with conventional distillation process.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"716 ","pages":"Article 123520"},"PeriodicalIF":8.4,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142720786","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}