Article
Engineering, Environmental
Sanjit Gaikwad, Yeonhee Kim, Ranjit Gaikwad, Sangil Han
Summary: A new method of modifying MOF-177 with amines was successfully used to enhance CO2 adsorption capacity at low pressure. TEPA-modified MOF-177 showed the largest improvement in CO2 adsorption capacity among the three amines studied.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Materials Science, Multidisciplinary
Yasamin Hosseini, Mahsa Najafi, Soodabeh Khalili, Mohsen Jahanshahi, Majid Peyravi
Summary: Amine-functionalized solid adsorbents have shown promising potential for capturing CO2 selectively under ambient conditions. Experimental results demonstrate significantly improved CO2 uptake using amine-functionalized GO samples, indicating excellent selectivity for capturing CO2.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Chemistry, Inorganic & Nuclear
Jiazhen Chen, Yanchun Zheng, Xue Wang, Yuxuan Gao, Xiayang Gao, Yiming Zhang, Junkuo Gao, Xiaogang Yang
Summary: This work presents an amine-functionalized ultramicroporous metal-organic framework (MOF) Zn2(atz)2(ipa) with pH stability, which demonstrates a high adsorption capacity for C3H6 at low pressure. The suitable pore shape and strong bonding force with exposed -NH2 groups contribute to the high separation efficiency of C3H6/C3H8. This study provides a fresh solution for the production of polymer-grade C3H6 through physical adsorption by MOFs.
JOURNAL OF SOLID STATE CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Yuanting Qiao, Zhen Zhan, Yuwan Yang, Manying Liu, Qi Huang, Bien Tan, Xuebin Ke, Chunfei Wu
Summary: This paper investigated the synthesis of amine-functionalized HCPs and azo-functionalized HCPs using one-step method, which exhibit high CO2 adsorption capacity and selectivity.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Engineering, Chemical
Ye Yuan, Zhihua Qiao, Jiayou Xu, Jixiao Wang, Song Zhao, Xingzhong Cao, Zhi Wang, Michael D. Guiver
Summary: The introduction of the high-valence metal-induced microporous polymer (HMMP-1) filler into mixed matrix membranes (MMMs) enhances separation efficiency, with excellent alkaline stability and pore structure maintenance. The compatibility between HMMP-1 and PVAm improves the CO2 transport rate, leading to higher CO2 permeance and superior separation performance for CO2/CH4, CO2/N2, and CO2/H2 compared to other membranes.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Chemistry, Inorganic & Nuclear
Wen-Qian Zhang
Summary: By synthesizing a 3D rigid Ni(II) microporous metal-organic framework, a high capacity and selectivity for CO2 over CH4 has been achieved.
Review
Chemistry, Multidisciplinary
Jannis Hack, Nobutaka Maeda, Daniel M. Meier
Summary: CO2 capture technology is gaining global attention due to climate and ecosystem changes that pose potential threats to human health and life on Earth. Solid materials for CO2 capture have recently gained focus due to their high energy consumption and corrosive nature. Various porous materials have been reported, with amine-functionalized porous materials outperforming others in terms of CO2 adsorption capacity and regeneration efficiency. This review provides a brief overview of CO2 capture by different amines and discusses a state-of-the-art regeneration method using visible/UV light-triggered CO2 desorption at room temperature. The review also summarizes current issues and future perspectives.
Article
Chemistry, Applied
Eduardo J. Cueto-Diaz, Fabian Suarez-Garcia, Santos Galvez-Martinez, Maria Pilar Valles-Gonzalez, Eva Mateo-Marti
Summary: Efforts to capture CO2 have become more intense due to the impact of climate change on ecosystems and biodiversity. This study focuses on developing different methods for CO2 sequestration and investigates the influence of functional chemical groups on CO2 adsorption.
REACTIVE & FUNCTIONAL POLYMERS
(2022)
Article
Chemistry, Multidisciplinary
Katherine Mizrahi Rodriguez, Sharon Lin, Albert X. Wu, Gang Han, Justin J. Teesdale, Cara M. Doherty, Zachary P. Smith
Summary: Gas-separation polymer membranes suffer from a permeability-selectivity trade-off, but an innovative in situ crosslinking and solid-state deprotection method can improve performance by increasing free volume element (FVE) size while maintaining a narrow distribution, enabling polymers to surpass upper bounds and improve CO2-based selectivities by 200%. This approach transforms polymers into chemical analogues with enhanced performance, overcoming traditional trade-offs.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Engineering, Chemical
Hilal Daglar, Sena Aydin, Seda Keskin
Summary: This research evaluated the performance of nearly 180,000 different MOF/polymer MMMs in 11 different gas separations, finding that many of them exceeded the upper bounds due to high gas permeability and selectivity, and showed that using MOFs as fillers significantly improved the gas permeability of polymers.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Chemical
Fengtian Bai, Xin Liu, Suleiman Sani, Yumin Liu, Wei Guo, Chenggong Sun
Summary: A series of amine-functionalized CO2 sorbents were synthesized by grafting mono-and tri-amine substituted trialkoxysilanes on mesocellular siliceous foam (MCF) via a facile wet grafting method. The amine grafted MCF exhibited excellent CO2 adsorption capacity and stability, attributed to the large pore volume and pore size coupled with superior interconnectivity of MCF allowing more surface silanol groups available and accessible for amino silanes. These findings suggest that the porous structure and amine loading level play significant roles in enhancing both the CO2 adsorption capacity and adsorption rate of the developed sorbents.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Nanoscience & Nanotechnology
Donghui Jo, Su-Kyung Lee, Kyung Ho Cho, Ji Woong Yoon, U-Hwang Lee
Summary: This study presents a novel copper-based ultramicroporous MOF for enhanced CO2 capturing. The experiments show that the material can effectively adsorb CO2 even under high humidity conditions, making it highly promising for practical applications.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Materials Science, Multidisciplinary
Hong Dong, Li-Hua Li, Zhendong Feng, Qing-Nan Wang, Peng Luan, Jun Li, Can Li
Summary: Directly capturing CO2 from the air at ambient conditions is challenging due to the competition of water adsorption and low CO2 pressure. In this study, we developed amine-functionalized quasi-metal-organic frameworks (X-UIO-EDA) with high CO2 capture capacity, and discovered that water-assistance enhances CO2 capture under 400 ppm CO2 and humidity. The results showed that 2-UIO-EDA had a 10-fold higher CO2 capture capacity under humid air conditions compared to dry air conditions, and quasi-UIO-66 had more amine modification sites for higher CO2 capture.
ACS MATERIALS LETTERS
(2023)
Article
Environmental Sciences
Ji Won Heo, Liangliang An, Jiansong Chen, Jin Ho Bae, Yong Sik Kim
Summary: Research on low-cost bio-adsorbents for the removal of harmful substances from effluents has gained significant attention. This study prepared three types of amino-silane-modified lignins and investigated their adsorption behavior towards cationic and anionic dyes. The results showed that the amino-silane reagents resulted in different molecular self-assembly structures on the lignin surface. The ASLs exhibited excellent adsorption capacities and selectivity based on the pH conditions.
Article
Engineering, Chemical
Meng Yang, Shujuan Wang, Lizhen Xu
Summary: Water vapor affects the CO2 separation performance of solid amine sorbents. The introduction of hydrophobic phenyl groups reduces water vapor adsorption and improves the CO2/H2O selectivity of amine resin sorbents. This modification resulted in a reduced CO2 uptake but a stable CO2 capacity in consecutive temperature swing adsorption cycles.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Environmental
Hasan Can Gulbalkan, Zeynep Pinar Haslak, Cigdem Altintas, Alper Uzun, Seda Keskin
Summary: By conducting high-throughput computational screening and molecular simulations, this study identified the great potential of MOFs for CH4/N2 separation and the significant enhancement of selectivity with IL incorporation. Over 25% of MOF and 70% of COF membranes exceeded traditional performance limits, with MOF/polymer and COF/polymer composites showing superior properties compared to pure polymers.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Gokhan Onder Aksu, Ilknur Erucar, Zeynep Pinar Haslak, Seda Keskin
Summary: Screening of hypothetical COF database led to the discovery of promising CO2 separation materials, with simulations showing superior CO2/H2 separation performance compared to experimental COFs. Molecular insights into the unique structural features of hypothetical COFs will guide the synthesis of novel materials for enhanced CO2 separation.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Applied
Ozce Durak, Muhammad Zeeshan, Nitasha Habib, Hasan Can Gulbalkan, Ala Abdulalem Abdo Moqbel Alsuhile, Hatice Pelin Caglayan, Samira F. Kurtoglu-Oztulum, Yuxin Zhao, Zeynep Pinar Haslak, Alper Uzun, Seda Keskin
Summary: The modification of porous materials' physicochemical properties using ionic liquids (ILs) has been extensively studied for various applications. The combination of ILs and porous materials shows great potential in gas adsorption and separation, catalysis, liquid-phase adsorption and separation, and ionic conductivity due to superior performances of hybrid composites. This review discusses the evolution of IL/porous material composites as a research field by exploring different types of porous materials, including metal organic frameworks (MOFs), covalent organic frameworks (COFs), zeolites, and carbonaceous materials. The challenges, opportunities, synthesis methods, characterization techniques, applications, and future prospects of IL/porous materials are discussed to provide a roadmap for this area. The future advancements discussed in this review will provide insights into the design and development of novel hybrid materials and their potential to replace conventional materials.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Engineering, Chemical
Hilal Daglar, Sena Aydin, Seda Keskin
Summary: This research evaluated the performance of nearly 180,000 different MOF/polymer MMMs in 11 different gas separations, finding that many of them exceeded the upper bounds due to high gas permeability and selectivity, and showed that using MOFs as fillers significantly improved the gas permeability of polymers.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Chemical
Busra Akkoca Palabiyik, Merdan Batyrow, Ilknur Erucar
Summary: Developing new and efficient methods as an alternative to hemodialysis is crucial due to challenges associated with low membrane efficiency and long dialysis sessions. Metal organic frameworks (MOFs) have recently gained interest in the membrane community for their tunable properties, and this study computationally evaluated membrane-based uremic toxin separation performances of 60 bio-compatible MOFs. Results showed that certain MOFs exhibited high membrane selectivities for urea/water and creatinine/water separations, and considering the structural flexibility of MOFs significantly enhanced membrane selectivities for urea/water separations.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Hakan Demir, Seda Keskin
Summary: The study investigates the separation properties of MOFs for CO2 from various gas mixtures and identifies the best performing adsorbent materials.
JOURNAL OF CO2 UTILIZATION
(2022)
Article
Nanoscience & Nanotechnology
Sena Aydin, Cigdem Altintas, Seda Keskin
Summary: This study focuses on the performance of experimentally synthesized covalent organic frameworks (COFs) and hypothetical COFs as membrane materials for gas separation. By calculating the gas permeability and selectivity of COFs, it was found that many COF membranes have exceeded the upper limit of polymeric membranes. This study also proposes an efficient method for selecting the best hypothetical COFs and investigates mixed matrix membranes composed of COFs and polymers. The results show that the performance of many polymers can surpass the upper limit when COFs are used as fillers.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Johannes W. M. Osterrieth, Jarnes Rampersad, David Madden, Nakul Rampal, Luka Skoric, Bethany Connolly, Mark D. Allendorf, Vitalie Stavila, Jonathan L. Snider, Rob Ameloot, Joao Marreiros, Conchi Ania, Diana Azevedo, Enrique Vilarrasa-Garcia, Bianca F. Santos, Xian-He Bu, Ze Chang, Hana Bunzen, Neil R. Champness, Sarah L. Griffin, Banglin Chen, Rui-Biao Lin, Benoit Coasne, Seth Cohen, Jessica C. Moreton, Yamil J. Colon, Linjiang Chen, Rob Clowes, Francois-Xavier Coudert, Yong Cui, Bang Hou, Deanna M. D'Alessandro, Patrick W. Doheny, Mircea Dinca, Chenyue Sun, Christian Doonan, Michael Thomas Huxley, Jack D. Evans, Paolo Falcaro, Raffaele Ricco, Omar Farha, Karam B. Idrees, Timur Islamoglu, Pingyun Feng, Huajun Yang, Ross S. Forgan, Dominic Bara, Shuhei Furukawa, Eli Sanchez, Jorge Gascon, Selvedin Telalovic, Sujit K. Ghosh, Soumya Mukherjee, Matthew R. Hill, Muhammed Munir Sadiq, Patricia Horcajada, Pablo Salcedo-Abraira, Katsumi Kaneko, Radovan Kukobat, Jeff Kenvin, Seda Keskin, Susumu Kitagawa, Ken-ichi Otake, Ryan P. Lively, Stephen J. A. DeWitt, Phillip Llewellyn, Bettina Lotsch, Sebastian T. Emmerling, Alexander M. Putz, Carlos Marti-Gastaldo, Natalia M. Padial, Javier Garcia-Martinez, Noemi Linares, Daniel Maspoch, Jose A. Suarez del Pino, Peyman Moghadam, Rama Oktavian, Russel E. Morris, Paul S. Wheatley, Jorge Navarro, Camille Petit, David Danaci, Matthew J. Rosseinsky, Alexandros P. Katsoulidis, Martin Schroder, Xue Han, Sihai Yang, Christian Serre, Georges Mouchaham, David S. Sholl, Raghuram Thyagarajan, Daniel Siderius, Randall Q. Snurr, Rebecca B. Goncalves, Shane Telfer, Seok J. Lee, Valeska P. Ting, Jemma L. Rowlandson, Takashi Uemura, Tomoya Liyuka, Monique A. van derVeen, Davide Rega, Veronique Van Speybroeck, Sven M. J. Rogge, Aran Lamaire, Krista S. Walton, Lukas W. Bingel, Stefan Wuttke, Jacopo Andreo, Omar Yaghi, Bing Zhang, Cafer T. Yavuz, Thien S. Nguyen, Felix Zamora, Carmen Montoro, Hongcai Zhou, Angelo Kirchon, David Fairen-Jimenez
Summary: Porosity and surface area analysis are important in modern materials science. However, there is a lack of attention to the reproducibility issue in calculating BET surface areas from identical isotherms, raising concerns over the reliability of reported BET areas. To address this, a new computational approach called BET surface identification (BETSI) has been developed for accurately and systematically determining the BET area of nanoporous materials.
ADVANCED MATERIALS
(2022)
Article
Engineering, Environmental
Taner Yildiz, Ilknur Erucar
Summary: In this study, the adsorption-based uremic toxin separation performance of bio-compatible MOFs was assessed and it was found that certain bio-MOFs outperformed traditional adsorbents. Furthermore, the multi-component adsorption of uremic toxins in bio-MOFs was examined and it was observed that the amount of adsorbed water slightly increased while the amount of adsorbed urea significantly decreased.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Ozce Durak, Muhammad Zeeshan, Seda Keskin, Alper Uzun
Summary: In this study, a composite material was prepared by coating an ordinary activated carbon surface with an ionic liquid, resulting in high selectivity for CO2 and inhibited sorption of N2 and CH4. The newly formed chemisorption and physisorption sites on the surface contributed to the enhanced selectivity of the composite material.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Chemical
Cigdem Altintas, Seda Keskin
Summary: This study evaluates the performance of metal organic frameworks (MOFs) for CO2/N-2 separation using molecular simulations and compares the rankings of MOFs based on different performance metrics. The results provide important insights for identifying the most promising adsorbents for efficient flue gas separation.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2022)
Article
Computer Science, Interdisciplinary Applications
Hakan Demir, Seda Keskin
Summary: With advancements in computational resources and algorithms, computer simulations are now being used to tackle important global challenges such as CO2 capture. This study computationally screened a metal-organic framework database to identify the best-performing materials for efficient CO2 separation. The findings provide valuable insights for experimental design and improving CO2 selectivity.
COMPUTERS & CHEMICAL ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Gokhan Onder Aksu, Ilknur Erucar, Zeynep Pinar Haslak, Seda Keskin
Summary: This study explores the potential of using synthesized and computer-generated covalent organic frameworks (COFs) to capture H2S+CO2 from natural gas. Through extensive calculations and simulations, it was found that NPN-3 is the best performing COF, and isosteric heats of adsorption can be used to discover efficient hypothetical COFs for natural gas separation.
JOURNAL OF CO2 UTILIZATION
(2022)
Article
Engineering, Chemical
Nitasha Habib, Ozce Durak, Muhammad Zeeshan, Alper Uzun, Seda Keskin
Summary: In this study, a novel IL/MOF/polymer mixed matrix membrane was synthesized and characterized. The results showed that the composite membrane significantly improved the CO2 permeability and CO2/N2 selectivity of the polymer. Among them, the membrane with a 15% IL/MOF filler loading exhibited the highest CO2/N2 selectivity.
JOURNAL OF MEMBRANE SCIENCE
(2022)
