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
Green & Sustainable Science & Technology
I. Ahmad, H. Jee, S. H. Song, M. J. Kim, T. Eisa, J. K. Jang, K. -J. Chae, C. Y. Chuah, E. Yang
Summary: This study investigates the potential utility of 2D MXenes as nanofillers to enhance the gas separation performance of polydimethylsiloxane (PDMS) membrane. Mixed-matrix membranes were fabricated by incorporating multilayer MXene (ML-MXene) and single-layer MXene (D-MXene) into PDMS matrices, and the addition of MXene improved the separation capacity of the rubbery dense layers. The optimized D-MXene-loaded mixed-matrix membrane at 1 wt% loading demonstrated a 64.1% increase in CO2 permeability and a 21.3% increase in CO2/N2 selectivity compared to pure PDMS membrane.
MATERIALS TODAY SUSTAINABILITY
(2023)
Article
Engineering, Chemical
Yangyang Dai, Zhenhua Niu, Tian Fang, Yuanyuan Wang, Suyue Zhong, Peng Mu, Jian Li
Summary: The concept of constructing a one-dimensional-two-dimensional intercalated network supported ionic liquid membrane was proposed to overcome the low permeability issue of 2D graphitic carbon nitride membrane in CO2 separation. The resulting membrane exhibited superior CO2 permeance and selectivity, and demonstrated excellent durability after long-term testing.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Chemical
Shanshan He, Bin Zhu, Songwei Li, Yanqiu Zhang, Xu Jiang, Cher Hon Lau, Lu Shao
Summary: This article summarizes the latest progress in modification strategies for PIM-1 based membranes, including the design and modification of PIM-1 intrinsic structure and the fabrication of PIM-1/nanofiller mixed matrix membranes. The focus of the research is to improve the selectivity and long-term stability of PIM-1 membranes for crucial gas separations such as CO2 capture.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Review
Engineering, Chemical
Yangyang Dai, Zhenhua Niu, Yuanyuan Wang, Suyue Zhong, Peng Mu, Jian Li
Summary: Carbon capture is an important technique for reducing CO2 emissions. Efforts have been made to improve the carbon dioxide separation performance of existing membrane materials in order to expand their application in carbon capture processes. Two-dimensional microporous membranes have been proposed as an alternative separation membrane to enhance gas separation performance. The research on 2D microporous membranes shows great potential for the development of gas separation membranes.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Chemical
Meng Guo, Yanwen Zhang, Rong Xu, Xiuxiu Ren, Weiqiu Huang, Jing Zhong, Toshinori Tsuru, Masakoto Kanezashi
Summary: Composite organosilica membranes were fabricated via copolymerization reactions, with the addition of BTESB densifying membrane structures and copolymerization between BTESA and BTESBPh increasing membrane pore sizes. All membranes showed great potential for CO2 capture applications.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Chemical
Yang Han, W. S. Winston Ho
Summary: This review discusses the fundamentals of CO2/gas separation in polymeric membranes and explores the opportunities and challenges for various applications such as post-combustion carbon capture, hydrogen purification, and gas sweetening. It also highlights emerging polymeric membrane materials and promising candidates for CO2 separation applications, while comparing permeability-selectivity data against their upper bounds in 2008 and 2019.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Thermodynamics
Hongming Fu, Kaili Xue, Zhaohao Li, Heng Zhang, Dan Gao, Haiping Chen
Summary: This paper investigates the differences in CO2 capture performance between ceramic and PTFE membranes and finds that ceramic membranes exhibit favorable CO2 capture performance under appropriate operating parameters.
Review
Engineering, Chemical
Mariia Pasichnyk, Petr Stanovsky, Petr Polezhaev, Boleslav Zach, Michal Syo, Marek Bobak, Johannes C. Jansen, Michal Pribyl, Jason E. Bara, Karel Friess, Jaromir Havlica, Douglas L. Gin, Richard D. Noble, Pavel Izak
Summary: The major gaseous pollutants emitted during the combustion of fossil fuels, energy-intensive production of materials, and waste processing are CO2, SO2, and NOx. The industry and research community are working together to intensify their capture and reduce their emissions in order to meet stricter emission limits. Membrane separation technology, which is energy-efficient and can be combined with other technologies, is a significant application for environmental protection. Different types of membranes with specific functions and unique systems are discussed as promising technologies for flue gas purification.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Multidisciplinary
Bin Zhu, Shanshan He, Yadong Wu, Songwei Li, Lu Shao
Summary: Membrane technology is considered a promising strategy for carbon capture, and this study presents a facile synthesis protocol to enhance the performance of the membrane material through in situ polymerization of polyethylene glycol. The improved membrane exhibits higher toughness and gas separation properties.
Article
Engineering, Chemical
Chengli Jiao, Zedong Li, Xinxin Li, Mian Wu, Heqing Jiang
Summary: The nanosized PEI-ZIF-8 synthesized in the study plays a crucial role in improving the interfacial compatibility and CO2 permeance of the composite membranes.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Review
Chemistry, Applied
Rajashree Borgohain, Upamanyu Pattnaik, Babul Prasad, Bishnupada Mandal
Summary: Bio-based polymers, such as chitosan, offer promising advantages for gas separation membrane technology, including abundant renewable resources and reduced dependence on exhaustible fossil fuel sources. The critical study of the structure-property relationship of chitosan and its derivatives highlights potential for the design of novel bio-based membranes with improved gas permeation performance.
CARBOHYDRATE POLYMERS
(2021)
Article
Engineering, Environmental
Aviti Katare, Swapnil Sharma, Himali Horo, Sourav Bhowmick, Lal Mohan Kundu, Bishnupada Mandal
Summary: This study compares the effects of amine blending and grafting on gas separation performance by preparing chitosan/phenylalanine grafted and blended membranes. The results show that both grafting and blending can significantly enhance the CO2 permeance and CO2/N2 selectivity of the membranes. Stability tests indicate that chemical grafting exhibits better stability than physical blending.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Chemical
Jing-Yi Li, David K. Wang, Hui-Hsin Tseng, Ming-Yen Wey
Summary: BTESE-derived organosilica membranes were prepared using sol-gel method with tailored network through different solvents and membrane thickness, showing high ideal selectivity for gas separation due to controlled mechanism by molecular sieving and selective surface diffusion.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Engineering, Chemical
Meng Guo, Junming Qian, Rong Xu, Xiuxiu Ren, Jing Zhong, Masakoto Kanezashi
Summary: Organosilica membranes with aromatic groups, such as benzene, show great potential for CO2 capture applications due to their robust network structures and infinite decoration possibilities. Gas permeation properties of these membranes can be finely tuned by changing the location and number of the aromatic groups.
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)
Article
Electrochemistry
Chuan Hu, Ho Hyun Wang, Jong Hyeong Park, Hae Min Kim, Nanjun Chen, Young Moo Lee
Summary: We systematically study anion exchange membrane fuel cells based on specific copolymers and provide a scalable scenario for high-performance AEMFCs. The copolymer can address flooding and dry-out issues, and the composition of the catalyst layer and hydrophobic treatment significantly impact the power density.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Polymer Science
Yu Zhang, Won Hee Lee, Jong Geun Seong, Junming Dai, Shichao Feng, Yinhua Wan, Young Moo Lee, Yongbing Zhuang
Summary: A series of Troger's Base (TB)-based polyimides (PI-TBs) with different physical and gas transport properties were synthesized by altering the isomeric monomers. The solubility, microporosity, chain packing, mechanical performance, thermal stability, and gas transport properties of the PI-TBs were investigated. The choice of different isomeric dianhydrides and diamines had a significant impact on the solubility, mechanical properties, and gas permeability of the resulting polyimides. The chemical structure of the isomeric dianhydrides also influenced the chain packing and gas separation performance of the PI-TBs.
Article
Chemistry, Physical
Chuan Hu, Jong Hyeong Park, Hae Min Kim, Ho Hyun Wang, Joon Yong Bae, Mei-Ling Liu, Na Yoon Kang, Kyoung-seok Yoon, Chang-dae Park, Nanjun Chen, Young Moo Lee
Summary: High-performance poly(aryl-co-aryl piperidinium) reinforced membranes with excellent mechanical and chemical durability, gas tightness, and dimensional stability were reported for alkaline energy device applications.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Physical
Nanjun Chen, Jong Hyeong Park, Chuan Hu, Ho Hyun Wang, Hae Min Kim, Na Yoon Kang, Young Moo Lee
Summary: We report a scalable polymer with high ion exchange capacity for the development of anion exchange membrane fuel cells. The fuel cells exhibit excellent electrochemical performance, mechanical strength, and stability under different conditions, with low voltage decay rate.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Engineering, Chemical
Chuan Hu, Jong Hyeong Park, Hae Min Kim, Ho Hyun Wang, Joon Yong Bae, Na Yoon Kang, Nanjun Chen, Young Moo Lee
Summary: Poly(aryl-co-aryl piperidinium) (c-PAP) has attracted attention in anion exchange membrane fuel cells. In this study, poly(aryl-co-terphenyl piperidinium)-x (PDnTP-x) AEMs with different alkyl spacers were investigated. Long alkyl chains improved dimensional stability and gas tightness, while short-chain-type membranes exhibited higher ion conductivity. All membranes showed excellent alkaline and oxidative stability. Short-chain-type PD0TP-x based AEMFC achieved a new-record power density and stable operation.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Engineering, Chemical
Dong Zou, Hyun Woo Kim, Seong Min Jeon, Young Moo Lee
Summary: High-tensile strength and water-permeable hollow-fiber membranes composed of PVDF and PSF were prepared using phase inversion. The addition of Pluronic and PDA-assisted TiO2 coating enhanced adhesion and stability of the membranes, leading to enhanced separation performance of micro-and nano-sized O/W emulsions.
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
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.
