Article
Chemistry, Physical
Amira S. Mohammed Ali, Moataz M. Soliman, Sherif H. Kandil, Shaker Ebrahim, Marwa Khalil
Summary: In this study, cellulose acetate (CA) silica-based nanocomposite membranes were fabricated using the dry-wet phase inversion procedure for water desalination. The effects of SNPs and MSNPs on the properties and performance of the CA membrane were investigated. The fabricated nanocomposite membranes exhibited hydrophilic surface properties and showed enhanced water flux by adding SNPs and MSNPs.
JOURNAL OF MATERIOMICS
(2022)
Article
Engineering, Environmental
Danyal Rehman, Yvana D. Ahdab, John H. Lienhard
Summary: Monovalent selective electrodialysis (MSED) selectively removes monovalent ions using ion exchange membranes, beneficial for retaining divalent ions such as calcium and magnesium for agricultural use. Through a predictive model validated by experiments, MSED technology saves fertilizer costs and increases salt production.
Review
Materials Science, Multidisciplinary
Yi-Fu Gao, Yao Wang, Dong Zhou, Wei Lv, Fei-Yu Kang
Summary: This paper reviews the research progress and applications of graphene and its derivatives in seawater desalination, including single-layer graphene, nanoporous graphene, and graphene oxide. The permeability and selectivity of porous graphene membranes and lamellar graphene oxide membranes are discussed based on their intrinsic properties. Different preparation processes and their effects on the permselectivity are compared, and methods for regulating the permselectivity are analyzed. The use of graphene-based membranes in seawater desalination and future prospects are summarized.
NEW CARBON MATERIALS
(2022)
Article
Engineering, Chemical
Yanshao Yang, Zhenggong Wang, Zejun Song, Dixin Liu, Jiaqi Zhang, Lele Guo, Wangxi Fang, Jian Jin
Summary: This study investigates the application of an amidoxime modified polymer of intrinsic microporosity (AOPIM-1) as a membrane material for reverse osmosis desalination. The AOPIM-1 membrane shows a high water permeability and selective ion permeation due to its highly connected and fast water transport micropores. The performance of AOPIM-1 membrane surpasses conventional polyamide-based desalination membranes in terms of water permeability and permselectivity.
Article
Chemistry, Multidisciplinary
Anirban Som, Alessandra Griffo, Indranath Chakraborty, Hendrik Haehl, Biswajit Mondal, Amrita Chakraborty, Karin Jacobs, Paivi Laaksonen, Olli Ikkala, Thalappil Pradeep, Nonappa
Summary: 2D nanomaterials possess a range of mechanical, electrical, optical, and catalytic properties. The self-assembly of atomically precise noble nanoclusters offers a modular approach for the synthesis of new generation 2D materials. This study demonstrates the self-assembly of silver nanoclusters into large-area membranes with strong and elastic properties. These membranes can be easily transferred to different substrates and enable the detection of antibiotic molecules without substrate pretreatment.
Article
Engineering, Chemical
Xueting Zhao, Lingling Liu, Xinliang Zhang, Xinhao Cheng, Jinshan Sun, Jiefeng Pan
Summary: In this research, a series of semihomogeneous cation exchange membranes were prepared from polyethylene-polystyrene (PE-PS) resin particles. The membranes showed excellent mechanical properties and high ion exchange capacity (IEC) after sulfonation. The semihomogeneous cation exchange membrane (CEM-60) exhibited superior desalination ratio, current efficiency, and surface area resistance compared to the commercial cation exchange membrane CAM.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Engineering, Chemical
Noor Ul Afsar, Xiaolin Ge, Zhang Zhao, Arif Hussain, Yubin He, Liang Ge, Tongwen Xu
Summary: The study focused on the development of stable, cost-effective, and efficient zwitterion membranes (ZIMs) by incorporating amino isophthalic acid (AIPA) and fixed quaternized groups, leading to an improved Li+ flux for lithium extraction. Among the membranes tested, QAIPA-20 demonstrated the highest Li+ flux, showcasing its potential for lithium extraction, water desalination, and acid recovery.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Nanoscience & Nanotechnology
Hongjian Wang, Jiashuai Zhao, Yang Li, Yu Cao, Ziting Zhu, Meidi Wang, Runnan Zhang, Fusheng Pan, Zhongyi Jiang
Summary: The aqueous two-phase interfacial assembly method is proposed for fabricating COF membranes, which exhibit excellent performance in water desalination. The interfacial tension has a significant effect on the membrane structures. Furthermore, this method can be extended to fabricate other COF and metal-organic polymer membranes.
NANO-MICRO LETTERS
(2022)
Article
Engineering, Chemical
Jian Li, Riri Liu, Junyong Zhu, Xin Li, Shushan Yuan, Miaomiao Tian, Jing Wang, Patricia Luis, Bart Van der Bruggen, Jiuyang Lin
Summary: Thin film nanocomposite polyamide membranes with metal-organic framework ZIF-8 nanoparticles uniformly assembled via electrophoretic deposition exhibited enhanced water permeability and high ion selectivity, demonstrating the efficacy of this approach for designing high-performance membranes for target separations.
Article
Chemistry, Multidisciplinary
Yijun Qian, Jing Shang, Dan Liu, Guoliang Yang, Xungai Wang, Cheng Chen, Liangzhi Kou, Weiwei Lei
Summary: The development of functionalized graphene oxide membranes through plasma processing offers enhanced metal ion sieving and improved efficiency in seawater desalination. The nitrogen functionalities in the membranes interact strongly with metal ions, leading to increased mono/divalent cation selectivity. Additionally, the ultrathin FGOMs exhibit high water flux and water/salt selectivity, showing great potential for various applications.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Multidisciplinary
Xingda Yang, Zhou Qu, Sen Li, Manhua Peng, Chunxi Li, Ruimao Hua, Hongwei Fan, Juergen Caro, Hong Meng
Summary: Graphdiynes (GDYs), two-dimensional graphene-like carbon systems, are considered as potential advanced membrane material due to their unique physicochemical features. Herein, we report a simple and efficient alkynylated surface-mediated strategy to prepare hydrogen-substituted graphdiyne (HsGDY) membranes on commercial alumina tubes. The resulting membranes exhibit outstanding molecular sieving together with excellent water permeances and show a long-term durability in cross-flow nanofiltration, owing to the superhydrophilic surface and hydrophobic pore walls.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Engineering, Chemical
Dapeng Liu, Yongliang Chen, Toan Trong Tran, Ganwei Zhang
Summary: A non-PA TFC-NF membrane was developed through rapid assembly of tannic acid on hydrolyzed polyacrylonitrile substrate, exhibiting high perm-selectivity, high rejection rates for salts and organic pollutants, and superior water permeability. The membrane also showed excellent antifouling performance and structural stability, indicating great potential for practical nanofiltration applications in water purification and wastewater reclamation.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Polymer Science
Irina Stenina, Polina Yurova, Aslan Achoh, Victor Zabolotsky, Liang Wu, Andrey Yaroslavtsev
Summary: Ion exchange membranes are commonly used for water treatment and ion separation in electrodialysis. Modifying these membranes with different dopants is a way to enhance their efficiency. This study proposes a simple strategy of surface modification using phosphate-functionalized ceria for heterogeneous RALEX-CM membranes. While the ionic conductivity of the composite membranes decreases, their cation transport numbers increase slightly. Moreover, the modified membranes exhibit a threefold increase in Ca2+/Na+ permselectivity at low current densities.
Article
Engineering, Chemical
Yanju Wang, Huazhen Rong, Lei Sun, Panpan Zhang, Yuting Yang, Lingchang Jiang, Sheng Wu, Guangshan Zhu, Xiaoqin Zou
Summary: The study fabricated three dense and crack-free membranes of MFI, LTA, and AEI typed zeolites. Water adsorption behaviors were investigated, and it was found that reversible water uptake plays a critical role in water mobility across the zeolite membranes. Higher reversible water uptake contributes to the transport of water molecules and improves saltwater desalination efficiency.
Review
Environmental Sciences
Emilia Gontarek-Castro, Roberto Castro-Munoz, Marek Lieder
Summary: Membrane distillation (MD) is a widely used technology for seawater desalination, with a focus on developing novel MD membrane materials with enhanced hydrophobicity to improve desalination performance. The current trend is to achieve superhydrophobic MD membranes by embedding inorganic nanomaterials. The article discusses the influence of inorganic additives on MD membranes, theoretical principles of MD, milestones in developing superhydrophobic membrane surfaces, and future trends in the field.
CRITICAL REVIEWS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2022)
Article
Chemistry, Physical
Minsung Kim, Jinseon Park, Sang Hoon Kim, Jung-Hyun Lee, Keunhong Jeong, Jongsik Kim
Summary: In this study, UiO-66 and its analogues functionalized with -NH2/-SO3H were synthesized to generate ZrO2 poly-crystallites on N/S-doped carbon catalysts via pyrolysis. The catalysts contained different concentrations of Lewis basic N/S dopants, resulting in varying strengths and areas of Bro·nsted acidic -OH and Lewis acidic Zr4+ species. The results showed that adjusting the EBA/SLA ratio can promote the production of ·OH via catalytic H2O2 homolysis.
Article
Engineering, Environmental
Sung-Joon Park, Seung Su Shin, Joon Hee Jo, Chan Hee Jung, Hosik Park, You-In Park, Hyung-Ju Kim, Jung-Hyun Lee
Summary: A new Cs-adsorptive membrane was developed using compactly assembled Cs-adsorptive Prussian blue particles. This membrane demonstrated effective Cs removal and excellent performance in removing radioactive Cs, making it suitable for treating actual radioactive wastewater.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Seung Hyun Kang, Jin Young Seo, Hyeon Ji Oh, Jung-Hyun Lee, Albert S. S. Lee, Kyung-Youl Baek
Summary: Thermally switchable ladder-like poly(silsesquioxane) (LPSQ) adhesives were synthesized and used as reversible adhesion materials through the Diels-Alder reaction. The reversible features of LPSQ polymer blended with different diene crosslinkers were evaluated. LPSQ adhesives with long alkyl crosslinkers demonstrated tremendous reversibility in thermally switchable adhesion. The chain flexibility of LPSQ side chains was experimentally and theoretically demonstrated to affect the reversible Diels-Alder and retro Diels-Alder reactions. Additionally, these thermally switchable LPSQ adhesives exhibited superior mechanical and thermal stabilities compared to commercial adhesives, making them potential materials for adhesive applications.
MATERIALS CHEMISTRY FRONTIERS
(2023)
Article
Biochemistry & Molecular Biology
Ga Yeon Won, Ahrumi Park, Youngmin Yoo, You-In Park, Jung-Hyun Lee, In-Chul Kim, Young Hoon Cho, Hosik Park
Summary: Adding co-solvents to the polymer dope solution is a common method for tuning the morphology and separation performance of membranes. In this study, polybenzimidazole (PBI) membranes with high separation properties and stability were synthesized for organic solvent nanofiltration (OSN) applications by adding acetonitrile (MeCN) to the dope solution and crosslinking with dibromo-p-xylene. The PBI/MeCN membranes exhibited superior rejection properties and stable permeances for various organic solvents, demonstrating their applicability in fine chemical industries.
Article
Chemistry, Multidisciplinary
Sungkwon Jeon, Hansoo Kim, Juyeon Choi, Jeong F. Kim, Ho Bum Park, Jung-Hyun Lee
Summary: A highly selective and pH-resistant thin film composite membrane is fabricated by synthesizing a crosslinked poly(quaternary ammonium) selective layer on a polyethylene support. This membrane exhibits a highly selective molecular density and exceptional pH stability under extreme acidic and alkaline conditions, making it a promising candidate for applications in harsh pH environments.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Physical
Yeon Jae Park, Dong Ho Kim, Jung-Hyun Lee, Heon Phil Ha, Dong Wook Kwon
Summary: A series of VxNbMoTi catalysts were synthesized to improve the SCR performance and SO2 durability of vanadium-based catalysts at low temperatures. The addition of Nb-Mo enhanced the activity and resistance against SO2 and H2O. Physicochemical analysis showed increased NH3 adsorption, improved Vn+ (n = 3, 4) fraction, increased oxygen vacancies, and labile oxygen. Therefore, introducing Nb-Mo improved SCR performance and enhanced resistance to SO2 and H2O.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Jin Young Seo, Jung-Hyun Lee, Kie Yong Cho, Keunhong Jeong, Kyung-Youl Baek
Summary: This study presents a novel polymeric buffer that enhances the catalytic ability of metal-organic framework (MOF) catalysts without contamination. The optimized polymer buffer effectively degrades nerve-agent simulants in the presence of UiO-66, while maintaining its catalytic activity for multiple cycles. The polymeric composite coated on a cotton substrate also exhibits excellent detoxification performance in highly humid conditions (RH 99%), suggesting its potential in developing chemical protective textiles against chemical warfare agents.
CHEMISTRY OF MATERIALS
(2023)
Article
Engineering, Chemical
Min Gyu Shin, Wansuk Choi, June Huh, William D. Mulhearn, Jung Sun Hwang, Christopher M. Stafford, Jeong F. Kim, Jung-Hyun Lee
Summary: In this study, the Hansen solubility parameters (HSPs) of crosslinked PA membranes were determined by quantifying the swelling degrees of a molecular layer-by-layer-assembled, model PA nanofilm in various solvents via in-situ atomic force microscopy. The newly determined HSPs of the PA layer, combined with free volume and Flory-Huggins solution theories, were incorporated into the solution-diffusion model, accurately predicting the permeance of 16 different solvents and providing practical and fundamental insights into solvent transport in PA membranes along with robust tools for characterizing nanofilm properties.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Sung-Joon Park, Myung-Seok Lee, Mehmet Emin Kilic, Junil Ryu, Hosik Park, You In Park, Hyoungsoo Kim, Kwang-Ryeol Lee, Jung-Hyun Lee
Summary: Interfacial polymerization is used to fabricate functional nanofilms for various applications by assembling polymer nanofilms at the water-oil interface in the presence of surfactants. Through in situ visualization and computational simulations, this study reveals the critical role of Marangoni instability induced by surfactants in structurally regulating nanofilms. Despite different instability-triggering mechanisms, the delicate control of surfactants enables the fabrication of defect-free nanofilms with ultra-permselectivity.
Article
Engineering, Chemical
Wansuk Choi, Min Gyu Shin, Gi Wook Lee, Donguk Kim, Cheol Hun Yoo, Jong Suk Lee, Hyun Wook Jung, Jung-Hyun Lee
Summary: By implanting a biomimetic sharkskin pattern on the membrane surface, biofouling can be reduced, and membrane performance can be improved. The antibiofouling effect of the membrane is enhanced with increasing pattern orientation angle. These findings provide fundamental insights into the antibiofouling mechanisms of uniaxially and/or biomimetically patterned membranes.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Chemistry, Physical
Seokhyun Lee, Heon Phil Ha, Jung-Hyun Lee, Jongsik Kim
Summary: TiO2-supported nickel vanadates modified with SOZ2- (Z=3-4) were found to enhance the acidity and redox cycling efficiency in deNOX reactions. Among them, Ni1-S exhibited the highest activity and oxygen mobility, and promoted the degradation of AS/ABS and resistance to hydrothermal aging. The addition of Sb2O5 further improved the water resistance and AS/ABS decomposition rate of Ni1-Sb-S catalyst.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Engineering, Environmental
Sung-Joon Park, Myung-Seok Lee, Heewoong Yoon, Jae Hong Kim, Sungkwon Jeon, Seung Su Shin, Minuk Yang, Jieun Choi, Jiwon Seo, Jung-Hyun Lee
Summary: A biofouling-resistant and high-performance polyamide thin-film composite membrane was successfully fabricated by adding a biomimetic antimicrobial peptoid during the interfacial polymerization process. The resulting membrane exhibited superior separation performance and long-term stability.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Richard I. Foster, Hyung-Ju Kim, Sung-Jun Kim, Chan Woo Park, Hee-Man Yang, Jung-Hyun Lee
Summary: Self-propelling shuttles functionalized with Prussian blue are capable of efficiently removing radioactive caesium from aqueous phases during nuclear accidents and emergency scenarios.
ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Richard I. Foster, Hyung-Ju Kim, Sung-Jun Kim, Chan Woo Park, Hee-Man Yang, Jung-Hyun Lee
Summary: Self-propelling shuttles functionalised with Prussian blue were developed for efficient removal of radioactive caesium. The shuttles exhibited high adsorption efficiency and loading capacity, and could achieve self-motion through the Marangoni effect. This technology provides a rapid and effective response to nuclear accidents.
ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY
(2023)
Article
Chemistry, Physical
Ally Guo, Avery E. Baumann, Eric D. Rus, Christopher M. Stafford, David Raciti
Summary: This study investigates the influence of polymer overlayers on the catalytic activity of Ag for electrochemical CO2 reduction to CO. It is found that different thicknesses of polystyrene and poly(4-vinylpyridine) films can manipulate the reaction activity of CO2 reduction. Polystyrene significantly suppresses the CO2 reduction activity while enhancing the hydrogen evolution reaction (HER), whereas the addition of a nitrogen heteroatom into polystyrene increases the conversion of CO2 to CO and suppresses HER. Block copolymers with both phenyl and pyridyl functionalities exhibit similar CO evolution activity but further suppress HER compared to the polymer layer containing only pyridine groups. The size of the blocks in the copolymers affects the catalytic output of the Ag electrode, suggesting that the hierarchical structure in the block copolymer layer plays a role in catalytic activity. Analysis of the polymer overlayers indicates that polystyrene inhibits ion transport to the metal electrode, while poly(4-vinylpyridine) enables CO2 transport and modifies the electronics of the Ag active site. Therefore, the engineered application of polymer overlayers, especially those containing heteroatoms, offers new avenues for electrochemical CO2 reduction.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)