Article
Engineering, Chemical
Pengyan Du, Zhiyong Wang, Tong Zhang, Cher Hon Lau, Shaomin Liu, Pei Li
Summary: A novel polybenzoxazole (PBO) polymer was developed by thermal rearrangement of a thermally crosslinked polyimide, exhibiting superior CO2 separation performance without plasticization under high pressure conditions.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Engineering, Chemical
Kai Qu, Liheng Dai, Yongsheng Xia, Yixing Wang, Dezhu Zhang, Yulin Wu, Zhizhen Yao, Kang Huang, Xuhong Guo, Zhi Xu
Summary: The study successfully fabricated self-crosslinked MXene hollow fiber membranes using a simple thermal treatment process, demonstrating improved molecular sieving performance.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Engineering, Chemical
Lu Ye, Xingming Jie, Lina Wang, Guohui Xu, Yang Sun, Guodong Kang, Yiming Cao
Summary: Flexible PBOA gas separation hollow fiber membranes were successfully prepared from ether-containing polyamide precursors by thermal densification with or without a supplementary coating treatment. The thermal rearrangement required lower treatment temperature compared to polyimide precursors, resulting in better mechanical properties and greatly improved selectivity of the membranes.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Engineering, Chemical
Di Ao, Guiyang Ma, Chunyang Zang, Yue Qin, Yu Qi, Wenfei Wan
Summary: Using 2-(tert-butylamino) ethanol as a new absorbent in hollow fiber membrane contactors, this study investigated the separation of CO2 from CO2/CH4 gas mixtures. The research results showed that MEA had the best decarbonization performance, and factors such as absorbent flow rate, concentration, and membrane specifications influenced the decarbonization effect.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Naef A. A. Qasem, Rached Ben-Mansour
Summary: This paper investigates the application effects of different shapes of adsorbent beds in carbon capture, and finds that the triangular cross-sectional bed exhibits better adsorption capacity and thermal management. The square bed is a good candidate for pressure swing adsorption, and is suitable for compact beds where CO2 uptake and pumping power are both important.
APPLIED SCIENCES-BASEL
(2022)
Article
Materials Science, Multidisciplinary
Carla Aguilar-Lugo, Won Hee Lee, Jesus A. Miguel, Jose G. de la Campa, Pedro Pradanos, Joon Yong Bae, Young Moo Lee, Cristina Alvarez, Angel E. Lozano
Summary: Mixed matrix membranes (MMMs) prepared by blending aromatic polyimides and microporous polymer network showed improved gas separation performance after thermal treatment. The good compatibility between PPN and polyimide matrix enhanced the formation of TR-PBO. Thermal rearrangement process significantly increased gas permeability.
ACS APPLIED POLYMER MATERIALS
(2021)
Article
Engineering, Chemical
Jianxin Zhang, Qing Zhao, Shidi Wang, Xiaoyao Tan
Summary: This study demonstrated the fabrication of an efficient CO2 sorbent by grafting amines on polyacrylonitrile hollow fibers. The TEPA@PAN hollow fibers showed good CO2 adsorption capacity and regeneration performance, making them promising for CO2 capture from confined space or ambient air.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Tomoyuki Suzuki, Ryo Akiyama
Summary: Gas transport properties of novel thermally rearranged copolybenzoxazole (TR-coPBO) membranes with various copolymerization ratios were studied. The TR-coPBO membranes were obtained by rearranging copoly(o-hydroxy imide)s with fluorene ring moiety at different temperatures. The membranes had larger d-spacing values and specific volumes exceeding the additive rule, indicating increased fractional free volumes. Permeability coefficients showed positive deviations from the additive rule, which could be attributed to steric repulsion and suppressed molecular chain packing due to the partial introduction of fluorene ring moiety.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Polymer Science
Tomoyuki Suzuki
Summary: Novel thermally rearranged polybenzoxazole (TR-PBO)-based silica hybrid membranes were prepared and investigated for gas transport properties, showing increased gas permeability with higher silica content due to the formation of free volume holes at polymer/silica interfacial region. The membranes exhibited outstanding CO2/CH4 selectivity exceeding the upper bound trade-off line, achieved through the synergistic effects of enlarged FFV and formation of size-selective free volume holes at polymer/silica interfacial region.
Article
Engineering, Chemical
Baiwang Zhao, Jun Wen Wong, Can Zeng Liang, Ji Wu, Tai-Shung Chung, Sui Zhang
Summary: Researchers developed an inner-selective polyethersulfone-polydimethylsiloxane (PES-PDMS) thin-film composite (TFC) hollow fiber membrane for CO2/N2 separation. The membrane exhibited high CO2 permeance and CO2/N2 selectivity, making it a promising candidate for post-combustion CO2 capture.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Biochemistry & Molecular Biology
Guoqiang Li, Wojciech Kujawski, Katarzyna Knozowska, Joanna Kujawa
Summary: CO2 separation from flue gas based on membrane technology has received significant attention in recent decades. In this study, PEI hollow fibers were fabricated using a dry-jet-wet spinning technique and then coated with a PDMS selective layer to prepare composite membranes. Various spinning conditions of the hollow fibers were characterized, and it was found that factors such as dope concentration, bore fluid flow rate, and bore fluid composition significantly influenced the gas permeance and ideal selectivity of the PDMS/PEI composite membrane.
Review
Engineering, Environmental
Roberto Castro-Munoz, Mohd Zamidi Ahmad, Magdalena Malankowska, Joaquin Coronas
Summary: Since carbon dioxide (CO2) is the primary greenhouse gas emitted into the atmosphere due to human activities, research efforts have been focused on capturing and reducing its production. Direct air capture (DAC) using sorbents has been explored as a promising alternative, but gas separation membranes are also being considered. This paper provides a perspective on the ongoing research and attempts of DAC applications via membrane separation and introduces the main materials and types used for CO2 separation.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Wen-Hsiung Lai, David K. Wang, Hui-Hsin Tseng, Ming-Yen Wey
Summary: Highly selective poly(S-IL) hollow fiber membranes were developed by synthesizing and coating a styrene-based IL monomer, achieving an increased CO2/N-2 selectivity of 29 and a final CO2 permeance of 3.6 GPU through optimization of polymerization conditions. Testing at higher temperatures led to increased gas permeance and selectivity, with a peak CO2/N-2 selectivity of 35 at 50 degrees C.
JOURNAL OF CO2 UTILIZATION
(2022)
Article
Engineering, Chemical
Jianxin Zhang, Shasha Guo, Shidi Wang, Xiaoyao Tan
Summary: Solid amine sorbents have potential application in direct air capture of CO2, but their specific disadvantages restrict their widespread use. In this study, a novel solid amine hollow fiber was proposed to overcome the limitations. The PAN-TEPA hollow fiber achieved high adsorption capacity under low CO2 concentration and showed potential for separation and capture of CO2 from ambient air.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Inorganic & Nuclear
Ya Ling Fan, Hui Ping Zhang, Meng Jia Yin, Rajamani Krishna, Xue Feng Feng, Li Wang, Ming Biao Luo, Feng Luo
Summary: The new metal-organic framework ECUT-77 has a high surface area and pore volume, allowing for efficient adsorption and separation of SO2 gas.
INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Xingyu Wu, Nanjun Chen, Harm-Anton Klok, Young Moo Lee, Xile Hu
Summary: The research team has successfully prepared high-molecular-weight branched poly(aryl piperidinium) AEMs, which exhibit high OH- conductivity and dimensional stability. The optimized membrane b-PTP-2.5 performs well at 80 degrees Celsius, with high mechanical strength and alkaline stability, as well as achieving good peak power densities in both H-2-O-2 and H-2-air.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Engineering, Chemical
Ho Hyun Wang, Chuan Hu, Jong Hyeong Park, Hae Min Kim, Na Yoon Kang, Joon Yong Bae, Won Hee Lee, Nanjun Chen, Young Moo Lee
Summary: This study reports the fabrication of high-performance AEMs reinforced with polyethylene using ethanol as a co-solvent. The addition of ethanol improves the penetration efficiency of polymer solutions in the substrate, resulting in AEMs with high transmittance and outstanding tensile strength. The peak power densities of the AEMFCs based on these membranes also demonstrate excellent performance.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Engineering, Chemical
Hae Min Kim, Chuan Hu, Ho Hyun Wang, Jong Hyeong Park, Nanjun Chen, Young Moo Lee
Summary: This study reports the use of side-chain-type s-PDTP copolymers as ionomers and membranes for anion exchange membrane fuel cells (AEMFCs). These copolymers exhibit high alkaline stability, excellent micromorphology, and high OH- conductivity. The ionomers with moderate ion-exchange-capacity and rational water uptake show optimal AEMFC performance.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Engineering, Chemical
Dong Zou, Hyun Woo Kim, Seong Min Jeon, Young Moo Lee
Summary: This study investigates the fabrication of PVDF/PSF hollow-fiber membranes with high mechanical strength and satisfactory water permeance using a green technique. The results show that hydrophobic coating fluid leads to higher water permeance, and hydrophobic modification improves the performance for separation of saline water.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Review
Polymer Science
Dong Zou, Young Moo Lee
Summary: This review comprehensively introduces the state-of-the-art strategies to modify and design high-performance PVDF membranes for water treatment. It covers various aspects including green fabrication, microstructure and surface properties manipulation, as well as the applications of new materials and self-cleaning membranes.
PROGRESS IN POLYMER SCIENCE
(2022)
Article
Engineering, Chemical
Seungju Kim, Daniel E. Heath, Won Hee Lee, Young Moo Lee, Sandra E. Kentish
Summary: Thermally rearranged (TR) nanofibre membranes were developed for CO2 capture using membrane gas absorption. These membranes have ideal properties for CO2 absorption and stripping due to their porous nature and hydrophobicity. The TR-NFM and TR-NCM membranes showed a significant increase in CO2 absorption flux compared to a standard PTFE membrane, making them commercially viable.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Chemistry, Physical
Joon-Yong Sohn, Gwangjin Kim, In-Tae Hwang, Junhwa Shin, Chan-Hee Jung, Young-Moo Lee
Summary: In this study, the enhanced performance of the poly(acrylic acid) binder-based silicon/graphite composite anode was achieved through a quick and scalable process of electron beam irradiation-induced crosslinking. The crosslinking reaction was induced by the presence of a water-soluble crosslinker. Analysis of the irradiated binder film showed that the crosslinking resulted in reduced swelling and improved tensile strength. The crosslinked anode exhibited higher hardness and better cycle stability compared to the non-irradiated one.
RADIATION PHYSICS AND CHEMISTRY
(2022)
Article
Engineering, Chemical
Katherine Mizrahi Rodriguez, Wan-Ni Wu, Taliehsadat Alebrahim, Yiming Cao, Benny D. Freeman, Daniel Harrigan, Mayank Jhalaria, Adam Kratochvil, Sanat Kumar, Won Hee Lee, Young Moo Lee, Haiqing Lin, Julian M. Richardson, Qilei Song, Benjamin Sundell, Raymond Thur, Ivo Vankelecom, Anqi Wang, Lina Wang, Catherine Wiscount, Zachary P. Smith
Summary: In this study, multiple laboratories collected high-pressure permeation data for different gases in commercial polysulfone films, providing a reference standard and recommended testing protocols.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Engineering, Environmental
Seokyoung Park, Joon-Yong Sohn, In-Tae Hwang, Junhwa Shin, Jin-Mun Yun, KwangSup Eom, Kwanwoo Shin, Young-Moo Lee, Chan-Hee Jung
Summary: An in-situ method of preparing crosslinked poly(vinylene carbonate-co-cyanoethyl acrylate) (PVCEA) GPEs using electron beam irradiation in a fully-assembled metallic housing LIB is reported. The method allows for quick processing without the need for initiators or thermal treatment, and results in intimate integration with the electrodes and stable charge and discharge performance.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Chemical
Gang Wang, Shuai Yang, Na Yoon Kang, Mingxia Lu, Bingyan Hua, Hongliang Wei, Jiaqi Kang, Wenshuai Tang, Young Moo Lee
Summary: A series of sulfonated polybenzothiazoles (sPBT-E) with flexible ether groups in the polymer backbone were synthesized. Sulfonated graphene oxide (SGO) was doped into the sPBT-E matrix to enhance proton conduction. The sPBT-E62.5/SGO3 membrane exhibited excellent potential as an alternative proton exchange membrane for fuel cells.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Chemistry, Physical
Chuan Hu, Jong Heyong Park, Na Yoon Kang, Xiaohua Zhang, Young Jun Lee, Seung Won Jeong, Young Moo Lee
Summary: Introducing hydrophobic side chains in PFAP ionomers improves the stability of fuel cells, with the s-PFBP-FLN-C8 ionomer showing a remarkable peak power density of 2.607 W cm(-2) at 80 degrees C and a voltage decay rate 26 times lower than the benchmark ionomer. The length and position of the hydrophobic side chain, as well as the polymer backbone, affect the physical and electrochemical properties of ionomers.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Polymer Science
Yu Zhang, Junming Dai, Hua Lai, Yinhua Wan, Young Moo Lee, Yongbing Zhuang
Summary: The study focuses on developing wide-temperature-range proton exchange membranes (PEMs) for fuel cells without additional humidification systems. By incorporating crown ether units into chain backbones, the PA-doped co-PI membrane electrode assemblies (MEAs) can stably operate from 30 to 160 degrees C without external humidifiers. The performance of the PA-doped co-PI MEA achieved maximum power densities of 250 and 361 mW cm(-2) at 80 and 160 degrees C, respectively.
Article
Biotechnology & Applied Microbiology
Seungju Kim, Young M. Lee
Summary: The number of potential applications of 2D materials in energy-related fields has been increasing. Feasible fabrication processes of nanosheet membranes like graphene derivatives have been proposed for gas separation and water treatment, along with development of novel nanosheet materials. 2D nanosheet electrocatalysts as a cluster of oriented nanosheets have also attracted attention for fuel cells, energy-storage devices, or electrolyzers, due to their high electron mobility compared to bulk counterparts.
CURRENT OPINION IN CHEMICAL ENGINEERING
(2023)
Article
Polymer Science
Gang Wang, Shuai Yang, Na Yoon Kang, Bingyan Hua, Mingxia Lu, Hongliang Wei, Jiaqi Kang, Wenshuai Tang, Young Moo Lee
Summary: A sulfonated dicarboxylic monomer containing hexafluoroisopropyl was prepared and used to synthesize novel sulfonated polybenzothiazoles. These polymers exhibited excellent solubility and high thermal stability. Membranes made from these polymers showed excellent dimensional stability and proton conductivity, with superior performance to Nafion 117. The sPBT-F82.5 membrane demonstrated a high conductivity of 0.14 S cm(-1) at 80°C and 100% RH, as well as a maximum power density of 344.33 mW cm(-2) and superb durability at a current density of 0.2 A cm(-2) for 20 h. Overall, sPBT-F polymers have great potential as matrix materials for PEMs.
Review
Chemistry, Multidisciplinary
Nanjun Chen, Young Moo Lee
Summary: This article summarizes the importance of anion-conducting polyelectrolytes (ACPs) in alkaline energy devices and provides a review on the progress of ACPs and their applications. It highlights the significance of durable cationic groups, promising polymer backbones, and state-of-the-art AEMs and ionomers in alkaline devices, and suggests that future research should focus on these aspects.
TRENDS IN CHEMISTRY
(2022)
Article
Engineering, Chemical
Jiawei Hou, Shixuan Guo, Nigel Graham, Wenzheng Yu, Kening Sun, Ting Liu
Summary: A novel 2D composite membrane based on r-HGO and MXene materials was developed, demonstrating exceptional performance for water treatment in terms of permeability, pollutant rejection, and physical stability. The optimization of preparation conditions and material proportions can result in high water flux and efficient removal of pollutants.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Retraction
Engineering, Chemical
Chang Liu, Jinghong Liu, Liang Zhu, Shanfu Tang, Huixin Xiong
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Rui Gao, Caihong Liu, Andreia F. Faria, Qiang He, Chun Yang, Jun Ma
Summary: A novel copolymer architecture has been developed to address biofouling concerns in thin-film composite (TFC) membranes by integrating anti-fouling, bactericidal, and fouling-release functions. The multifunctional membrane demonstrates promising anti-adhesive properties, self-cleaning ability, and high flux recovery rate.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Alexander T. Bridge, Noah P. Wamble, Matthew S. Santoso, Joan F. Brennecke, Benny D. Freeman
Summary: This study demonstrates the reproducible preparation of high-flux defect-free asymmetric gas separation membranes using Cyrene(TM) as a majority dope formulation component. By adjusting the volume ratios of Cyrene(TM) and THF, as well as the concentrations of Matrimid(R) and the dry step time, optimal membrane performance is achieved.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Alessandra Imbrogno, Han Ya Lin, Babak Minofar, Andrea Iris Schaefer
Summary: In this study, a composite nanofiber membrane containing cross-linked beta-cyclodextrin-epichlorohydrin was prepared and evaluated for the removal of steroid hormones. The results showed that the membrane had high adsorption capacity and the ability to form a specific inclusion complex interaction with the hormones, indicating its potential application in hormone removal.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Bora Shin, Jaewon Shin, Yanuar Chandra Wirasembada, Ki Young Park, Jinwoo Cho
Summary: This study develops a mathematical model to estimate the initial flux of volatile fatty acids in the direct contact membrane distillation process. It identifies the parameters affecting the flux and their relationship with pH.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Yi-Jui Yeh, Jr Rong Liou, Wei Lin, Kuo-Lun Tung, Wei-Hung Chiang
Summary: This study demonstrates an effective plasma engineering method to create nitrogen-doped graphene quantum dot (NGQD)-inorganic nanocomposites for tunable molecular separation. The composite materials show high separation efficiency and controllable nanopore structures, making them potentially valuable for various applications.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Horacio Lopez-Marques, Kristofer L. Gleason, Manuel Aguilar-Vega, Rita Sulub-Sulub, J. Ehren Eichler, Hyeonji Oh, C. Buddie Mullins, Benny D. Freeman, Manish Kumar
Summary: In this study, water transport properties in Carbon Molecular Sieve (CMS) membranes were investigated. It was found that membranes synthesized at different pyrolysis temperatures exhibited varying water permeabilities. Compared to other polymeric materials, CMS membranes showed high water permeability, indicating potential for dehydration applications.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Dmitry A. Alentiev, Roman Yu. Nikiforov, Marina A. Rudakova, Danil P. Zarezin, Maxim A. Topchiy, Andrey F. Asachenko, Nikolay A. Belov, Maxim Bermeshev
Summary: A series of new norbornene-type monomers containing linear and branched substituents were synthesized, and robust thin membranes were prepared by vinyl-addition polymerization. Gas separation performance for the synthesized polymers was evaluated, and the structure of substituent side chains was found to significantly affect gas permeability and CO2 facilitated transport.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Lei Yan, Qi Zhang, Ze Zhang, Gui-Jie Li, Yi Jin, Xin-Lin Zhang, Yan-Yun Sun
Summary: In this study, a continuous, stable and fast ion transport channel was established through in-situ guided cross-linking of zinc alginate hydrogels on a porous membrane, overcoming the negative pore effect and effectively inhibiting the dendrite growth of zinc anodes and interfacial side reactions.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Yuqing Zhang, Ailing Zhang, Huiyang He, Yuting Fan, Yongjiang Li, Song Wang, Sanxi Li
Summary: The Langmuir-Blodgett self-assembly process is used to create an ordered SPEEK membrane, which enhances the proton conductivity by three times compared to conventional solution casting method.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Hasan Ismaeel, David Gibson, Eleonora Ricci, Maria Grazia De Angelis
Summary: In this study, a machine learning-based group contribution method (ML-GC) was developed to predict pure polymer parameters and successfully applied to predict gas solubility and gas solubility isotherms in glassy polymeric membranes. The model showed satisfactory performance on a small dataset, but has the potential to provide more accurate predictions for a wider range of polymers as more data becomes available.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Yi Ji, Yu Sun, Huilin Li, Qiang Fu, Yan Zhang
Summary: Previous studies have shown that vibration- or rotation-based techniques can effectively mitigate fouling during membrane filtration. However, it is difficult to incorporate these techniques with spiral wound modules (SWMs) widely used in water and wastewater treatment. This study developed a prototype membrane system to accommodate angular vibrations with a modified SWM, and experimental results showed that applying angular vibrations can effectively control algal fouling in an SWM with lower energy consumption compared to traditional methods.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Lakshmeesha Upadhayaya, Abaynesh Yihdego Gebreyohannes, Muhammad Wakil Shahzad, Usman T. Syed, Sandra L. Aristizabal, Radoslaw Gorecki, Suzana P. Nunes
Summary: Increasing temperatures worldwide pose a significant health risk, exacerbated by high humidity. Conventional air conditioners contribute heavily to carbon dioxide emissions, with dehumidification being a major factor. Membrane-based dehumidification system offers energy efficiency and non-toxic water vapor removal. This study demonstrates a membrane dehumidification system with polymeric hollow fibers coated with a green polyphenol coating, showing remarkable water vapor transport rate and selectivity. Long-term testing reveals minimal decline in vapor transport and a 4-5 times higher coefficient of performance (COP) compared to conventional dehumidifiers, making it a highly competitive, energy-saving device with reduced emissions and a smaller footprint.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Zhengzhong Zhou, Xue Zhu, Yi Yuan, Shaoqiang Wang, Xiaoshan Meng, Taoli Huhe, Qian Wang
Summary: In this study, lignin, a biomass material, was chemically modified and utilized in the interfacial polymerization process to improve the performance of nanofiltration membranes. The modified membranes showed enhanced hydrophilicity and anti-fouling properties, and the optimization of membrane pore size increased permeability. The study also demonstrated the potential application of the membranes in biogas slurry valorization.
JOURNAL OF MEMBRANE SCIENCE
(2024)