Article
Chemistry, Applied
Yeon Jung Oh, Su Kyung Kang, Ah Hyun Lee, Sanha Park, Sejin Kim, Jungkyu Choi, Pyung Soo Lee
Summary: MFI membranes were synthesized using composite seeds consisting of zeolite nanocrystals and amorphous silica nanoparticles. The addition of silica nanoparticles to the seed layer effectively reduced non-zeolite defects in the MFI membranes. The zeolite membrane prepared from a seed layer with 75% zeolite and 25% silica particles exhibited the highest N2/SF6 gas selectivity and N2 gas permeance.
MICROPOROUS AND MESOPOROUS MATERIALS
(2023)
Article
Engineering, Chemical
Qian Zhang, Ming Zhou, Xiufeng Liu, Baoquan Zhang
Summary: Novel mixed matrix membranes with 2D MFI nanosheets as inorganic fillers were synthesized successfully for the first time, showing excellent compatibility and significant enhancement in CO2 separation performance without the trade-off limitation between permeability and selectivity.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Review
Chemistry, Applied
Yichuan Li, Guofu Zhu, Yu Wang, Yongming Chai, Chenguang Liu
Summary: Oriented MFI zeolite membranes, compared with other orientations, can effectively improve the molecular transmission rate and are widely used in mixture separation and catalysis. However, twinning easily occurs during membrane preparation and controlling membrane orientation is challenging.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Engineering, Chemical
Li Peng, Zhengqi Wu, Boxuan Wang, Hua Liu, Chun Zhang, Xuehong Gu
Summary: Silanol-free MFI zeolite membranes were successfully prepared by the incorporation of tungsten in MFI framework. These membranes showed stable separation performance for ethanol/water mixture and exhibited a certain inhibitory effect on silanol groups.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Shaowei Yang, Byunghyun Min, Qiang Fu, Christopher W. Jones, Sankar Nair
Summary: Viscosity-confined dry gel conversion (VCDGC) method is demonstrated for the fabrication of high-performance zeolite hollow fiber membranes. The synthesis and performance testing of small-pore CHA and medium-pore MFI membranes showcase the versatility and reliability of this method.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Engineering, Chemical
Jin-hyeok Park, Donghun Kim
Summary: Zeolite nanosheets are effective in fabricating high-performance separation membranes, but their direct synthesis is complicated, especially for achieving the desired two-dimensional morphology. However, a simple synthesis method was found for MFI structure-type nanosheets using a single hydrothermal treatment, which had favorable thickness and aspect ratio for membrane fabrication compared to other zeolite MFI materials. The zeolite MFI membranes made from these nanosheets exhibited high flux and separation factor at high temperatures, outperforming membranes made from conventional zeolite MFI materials.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Chemical
Wooyoung Choi, Jin-hyeok Park, Eunji Choi, Minsu Kim, Hyungjoon Ji, Ohchan Kwon, Donghun Kim, Dae Woo Kim
Summary: This study synthesized zeolite MFI nanosheets and introduced them into PTMSP polymer using the shear-coating method. The resulting composite membrane exhibited a horizontally aligned structure with preferentially b-oriented zeolite MFI fillers. The incorporation of zeolite MFI nanosheets improved the gas separation performance, thermal stability, and mechanical strength of the membrane.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Nanoscience & Nanotechnology
Antara Priyadarshini, Siok Wei Tay, Liang Hong
Summary: The carbon-based composite membrane F-ZCM is synthesized by pyrolyzing a blend of zeolite, PEMA, Nafion, and PVDF. It features a fluorinated carbonaceous scaffold sheath surrounding micron voids, providing both solute retention and stable solvent permeance for organic solvent nanofiltration applications.
ACS APPLIED NANO MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Jiyang Wu, Haolin Wu, Bin Wang, Rongfei Zhou, Weihong Xing
Summary: This study presents the scalable fabrication of high-performance zeolite MFI membranes by single-step secondary growth on alumina monoliths. The monolithic membranes show higher packing density and mechanical strength compared to tubular ones. The separation performance of the monolithic membranes in butane isomer mixtures was evaluated and shows great potential.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Engineering, Chemical
Kotaro Wakimoto, Wei-Wei Yan, Norihiro Moriyama, Hiroki Nagasawa, Masakoto Kanezashi, Toshinori Tsuru
Summary: This study developed a novel polymer/ceramic composite membrane that exhibits stable ammonia permeance at low temperatures, which is beneficial for the application of ammonia as a renewable energy source.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Engineering, Chemical
Kotaro Wakimoto, Wei-Wei Yan, Norihiro Moriyama, Hiroki Nagasawa, Masakoto Kanezashi, Toshinori Tsuru
Summary: NH3 can be produced as an eco-friendly energy source below 250 degrees C through low-temperature active catalysts, and the use of fluorinated sulfonic acid polymer/ceramic composite membranes can enhance NH3 permeance.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Engineering, Chemical
Qian Zhang, Hongyu Guo, Gideon Muradi, Baoquan Zhang
Summary: By introducing 2D MFI nanosheets and functionalized modification, the CO2/CH4 separation performance of mixed matrix membranes (MMMs) can be improved, with enhanced CO2 permeability and CO2/CH4 selectivity, as well as enhanced mechanical properties of the membranes.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Gabriel Gama da Silva Figueiredo, Daishi Takayama, Katsunori Ishii, Mikihiro Nomura, Takamasa Onoki, Takuya Okuno, Hiromasa Tawarayama, Shinji Ishikawa
Summary: Thin pure-silica chabazite (Si-CHA) membranes were successfully synthesized using a secondary growth method on a porous silica substrate, achieving a high CO2 permeance and CO2/CH4 permeance ratio. The CO2 permeance through the Si-CHA membrane on a porous silica substrate was found to be twice as high as that through a membrane synthesized on a porous alumina substrate, despite similar zeolite layer thickness.
Article
Engineering, Chemical
Fangxu Fan, Yongchao Sun, Qizheng Zhao, Jingfa Zhang, Jianyu Guan, Gaohong He, Canghai Ma
Summary: The application of fluorinated polyimides in gas separation membranes is expanding due to their strong thermal and chemical stability. To overcome the trade-off between gas permeability and selectivity, a series of polyimides containing rigid cardo groups with C-F bonds (FFDA) were synthesized. Copolymerizing DAM segments with FFDA resulted in 6FDA-FFDA/DAM copolyimide, which showed enhanced gas separation performance. The design principles in this work pave the way for fabricating desirable polymeric membranes for selective CO2 separation.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Applied
Xiuxiu Ren, Huan Yu, Meng Guo, Rong Xu, Jing Zhong
Summary: In this study, a long alkyl chain-containing organosilica layer was utilized to modify silicalite-1 membranes, resulting in bi-layered BTESO/silicalite-1 composite membranes. After BTESO modification, the surface of the membranes became smoother, denser, and more hydrophobic. The modified membranes exhibited good separation performance in pervaporation, with increased ethanol flux and reduced water flux without sacrificing ethanol flux.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Engineering, Chemical
Daniel D. Athayde, Julius Motuzas, C. Diniz da Costa, Wander L. Vasconcelos
Summary: This study successfully demonstrates the preparation of high quality carbon membranes on alumina freeze-cast substrates using a two-step wet and dry surface coating method for desalination by pervaporation. The membranes consistently showed high salt rejection up to 99% and water fluxes as high as 14.6 L m(2) h(-1), with carbonization temperature affecting the carbon structure and water diffusion through the films. Traditional single-step dry surface membranes failed due to large pores and pore wetting during desalination.
Article
Engineering, Chemical
Mingming Wang, Xiaoyao Tan, Julius Motuzas, Jiaquan Li, Shaomin Liu
Summary: The study produced metallic nickel hollow fiber membranes with a dense skin layer and porous nickel substrate for hydrogen production from methane steam reforming. The membranes showed high efficiency and stability, making them a promising option for cost-effective hydrogen production at high temperatures.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Materials Science, Ceramics
Dana L. Martens, Julius Motuzas, Simon Smart, Joao C. Diniz da Costa
Summary: This study analyzed the hydrothermal treatment effect on cobalt silica-seeded xerogels, showing that the sol-gel seeding (SG) series had higher pore volume and surface area at higher Co loading. Additionally, surface area and pore volume retention increased with Co loading. Analysis of pore size distribution revealed densification in certain ranges and enlargement in others.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2021)
Article
Engineering, Chemical
Weng Fu, Julius Motuzas, David Wang, Christelle Yacou, Anne Julbe, James Vaughan, Joao C. Diniz da Costa
Summary: A novel membrane macropore storage mechanism induces fast salt crystallization in mesoporous top-layers, providing ideal conditions for crystal nucleation and growth during membrane pervaporation. This technology could potentially be considered for unlocking and processing strategic global minerals from brines.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Anita Haeussler, Anne Julbe, Stephane Abanades
Summary: The study evaluated suitable non-stoichiometric metal oxides for solar fuels production and found La0.5Sr0.5Mn0.9Mg0.1O3 to be a promising material.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Wanda Kellouai, Patrick Judeinstein, Marie Plazanet, Simon Baudoin, Martin Drobek, Anne Julbe, Benoit Coasne
Summary: Molecular simulations and experiments were conducted to investigate methane adsorption in MFI zeolite. The results showed qualitative and quantitative differences in adsorption behavior between internal porosity and external surface of the zeolite. A thermodynamic formalism was proposed to predict methane adsorption in nanoporous solids, providing a general rational framework for fluid adsorption in finely divided materials.
Article
Engineering, Environmental
Toni Tratnjek, Xavier Deschanels, Audrey Hertz, Cyrielle Rey, Jeremy Causse
Summary: The sitinakite structure shows potential in treating wastewater contaminated with Sr-90. The Ti/Si ratio in the starting gel affects the material properties, with lower ratios producing sitinakite structure and higher ratios producing sodium nonatitanate structure. The sitinakite structure has selective adsorption ability for Sr2+.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Chemistry, Physical
Alex Le Gal, Marielle Valles, Anne Julbe, Stephane Abanades
Summary: The main challenges and obstacles to the development of hydrogen/carbon monoxide production from the splitting of water/carbon dioxide through two-step solar thermochemical cycles are related to material concerns. This study investigates a new class of metal oxides, high entropy oxides (HEOs), to improve the specific amount of fuel generated per cycle with good kinetic rates.
Article
Nanoscience & Nanotechnology
Kevin Dedecker, Martin Drobek, Vincent Rouessac, Anne Julbe
Summary: This study compares the adsorption properties and selectivity of two isostructural metal-organic frameworks (MOFs), [Cu(2-pymo)2]n and [Pd(2-pymo)2]n, for linear, cyclic, and aromatic volatile organic compounds (VOCs). Experimental and computational investigations show that the MOF with palladium as the metal center has stronger affinity for aromatic compounds compared to copper. Additionally, the [Pd(2-pymo)2]n MOF exhibits preferential adsorption of benzene over toluene due to steric hindrance effects.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Engineering, Chemical
Gianni Olguin, Christelle Yacou, Julius Motuzas, Maik Butterling, Wilhelm A. Meulenberg, Simon Smart, Joao C. Diniz da Costa
Summary: This work investigates the in-situ structural characterization of silica derived thin film membranes using positron annihilation lifetime spectroscopy (PALS). The study found that the pore size distribution depth profile and coating layers had an impact on the pore size and gas separation.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Engineering, Chemical
Rasyidah Alrozi, Nor Aida Zubir, Noor Fitrah Abu Bakar, Bradley P. Ladewig, Julius Motuzas, Noor Hana Hanif Abu Bakar, David K. Wang, Joao C. Diniz da Costa
Summary: The substitution of different types of B-site metal cations in the perovskite structure had a significant effect on the catalytic reactivity of the resulting catalysts. In this study, mixed oxides containing B-site substituted CaMFeO3 (M = Cu, Mo, and Co) perovskite catalysts were synthesized, and their catalytic reactivity was investigated in the oxidative degradation of acid orange II (AOII) dye using a Fenton-like reaction. The results showed that CaCuFeO3 exhibited the highest degradation efficiency (97%), followed by CaMoFeO3 (90%), CaFeO3 (64%), and CaCoFeO3 (40%). The enhanced catalytic activity of CaCuFeO3 was attributed to the high reducibility of copper/iron ions within the B-site structure, which facilitated fast redox cycling of the active sites during catalysis.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2023)
Article
Chemistry, Physical
Karla Begonia Cervantes-Diaz, Martin Drobek, Anne Julbe, Julien Cambedouzou
Summary: SiC foams were synthesized from preceramic polymers impregnated into polyurethane foam templates, exhibiting photocatalytic activity for the degradation of methylene blue. The SiC foams were characterized for their crystal structure, electronic properties, and photocatalytic performance using various experimental techniques. The prepared SiC-based photocatalyst showed promising activity under visible light irradiation, making it a potential candidate for the treatment of contaminated waste waters in ambient conditions as a catalytic contactor or membrane reactor.
Article
Biochemistry & Molecular Biology
Alex Le Gal, Anne Julbe, Stephane Abanades
Summary: This study investigates the generation of solar thermochemical fuel through two-step thermochemical cycles using different redox-active compounds. The materials' synthesis, characterization, and performance assessment are conducted, with a focus on their ability to split CO2 during the cycles. The effect of material morphology on reactivity is also evaluated. The study finds that NiFe2O4 foam exhibits similar CO2-splitting activity as its powder form, while Ce0.9Fe0.1O2, Ca0.5Ce0.5MnO3, Ce0.2Sr1.8MnO4, and Sm0.6Ca0.4Mn0.8Al0.2O3 are not attractive candidates. Dual-phase ceria/perovskite composites show enhanced CO2-splitting performance compared to ceria.
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)