Article
Chemistry, Multidisciplinary
Yunchuan Pu, Mingang Zhao, Xu Liang, Shaoyu Wang, Hongjian Wang, Ziting Zhu, Yanxiong Ren, Zhiming Zhang, Guangwei He, Dan Zhao, Zhongyi Jiang
Summary: We demonstrate a COF-induced seeding strategy for fabricating MOF membranes, using COF substrate with uniform pore size and abundant functional groups. Charged COF nanosheets were designed to induce the formation of high aspect ratio ZIF-8@COF nanosheet seeds, which could be processed into a compact and uniform seed layer. The resulting ZIF-8 membranes exhibit ultrahigh C3H6/C3H8 separation performance and excellent long-term stability, and this strategy is also applicable to ultrathin ZIF-67 and UiO-66 membranes.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Shizheng Song, Wei Wang, Yali Zhao, Wufeng Wu, Yanying Wei, Haihui Wang
Summary: This study presents a novel 2D metal-organic framework membrane and reveals the significant impact of nanosheet stacking modes on gas separation performance.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Zibo Yang, Youssef Belmabkhout, Lauren N. McHugh, De Ao, Yuxiu Sun, Shichun Li, Zhihua Qiao, Thomas D. Bennett, Michael D. Guiver, Chongli Zhong
Summary: A new amorphous glass foam material called a(gf)ZIF-62 was developed for gas separation, which exhibits ultrahigh permeance and good selectivity. This material has the potential to greatly reduce the cost of difficult industrial gas separations, such as CH4/N-2 separation.
Article
Engineering, Chemical
Mahsa Loloei, Serge Kaliaguine, Denis Rodrigue
Summary: Bimetallic metal-organic frameworks (MOF) have gained attention for their synergic effect and enhanced properties compared to their parent structures. This study reports the synthesis of bimetallic Zn/Co-ZIF and its monometallic counterparts, ZIF-8 and ZIF-67, with a facile and low-cost method. Zn/Co-ZIF showed higher pore volume, BET surface area, and a slightly higher Zn-rich external surface.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Chemical
Shuo Liu, Zixi Kang, Lili Fan, Xuting Li, Bingchen Zhang, Yang Feng, Hongyan Liu, Weidong Fan, Rongming Wang, Daofeng Sun
Summary: A new type of CMS membrane derived from a crystalline porous hydrogen-bonded organic framework membrane (HCMS) was reported for the first time. By controlling the pyrolysis temperature, the CO2/CH4 separation performance of the HCMS membrane was optimized, showing remarkable selectivity and excellent separation stability.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Dipeshkumar D. Kachhadiya, Z. V. P. Murthy
Summary: Metal-organic frameworks (MOFs) are composed of metal centers and organic binders, possessing larger surface area and distinct pore structures. Significant advancements have been made in improving MOF membranes for various membrane-based separations, showcasing their importance in the field.
MATERIALS TODAY CHEMISTRY
(2021)
Review
Chemistry, Multidisciplinary
Nor Naimah Rosyadah Ahmad, Yang Lee, Mohamad Rezi Abdul Hamid, Tinia Idaty Mohd Ghazi, Rizwan Nasir, Choe Peng Leo, Siaw Paw Koh, Jagadeesh Pasupuleti, Sieh Kiong Tiong
Summary: Membrane-based separation is a promising technology for low-energy hydrogen separation and purification. Metalorganic frameworks as fillers in mixed matrix membranes fabrication show great potential in enhancing membrane performance due to their uniform apertures, high porosities, large internal surface areas, and tunable functionalities.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Caijiao Yu, Xixi Cen, Zhengqing Zhang, Yuxiu Sun, Wenjuan Xue, Zhihua Qiao, Michael D. Guiver, Chongli Zhong
Summary: In this study, a new strategy of step-nucleation in situ self-repair was proposed to prepare large-area ultrathin and rollable MOF membranes on a flexible polymer membrane support. This strategy enables the practical implementation of large-area MOF membranes and has potential applications in gas separation.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Hao Sun, Fengkai Wang, Xiaoting Li, Juergen Caro, Hong Meng, Naixin Wang, Quan-Fu An
Summary: In this study, a hydroxy salt layer with high inducible activity was successfully synthesized as a precursor on different porous substrates to prepare ZIF-67 membranes at room temperature. The precursor layer allowed the creation of intact ZIF-67 membranes with an ultrathin thickness of 176 +/- 12 nm. Experimental and simulation results confirmed that the ZIF-67 membrane exhibited unprecedented separation performance, including high separation factors and fluxes, for four types of azeotropic organic solvent mixtures.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Engineering, Chemical
Rong Wu, Yanhong Li, Aisheng Huang
Summary: A novel and effective synthesis method for in-situ growth of compact ZIF-67 membranes has been developed using Co2+ ions chelated PIM-1 as an interface layer between the membrane and support. The ZIF-67 membrane showed high H-2 permeance and ideal separation factors for various gas mixtures. Additionally, other compact and H-2 permselective ZIF membranes, such as ZIF-7 and ZIF-8 membranes, can be consistently prepared using the same strategy.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Engineering, Chemical
Lu Liu, Dongxia Liu, Chen Zhang
Summary: This study demonstrates that polyimide-derived asymmetric carbon molecular sieve (CMS) hollow fiber membranes exhibit outstanding H-2/C3H8 separation performance at high temperatures, making them potentially attractive for catalytic propane dehydrogenation membrane reactors. By controlling the mixture of hydrogen and propane, stable performance of CMS membranes under high-temperature conditions can be achieved.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Lun Shu, Yuan Peng, Rui Yao, Hongling Song, Chenyu Zhu, Weishen Yang
Summary: A facile strategy has been developed to construct defect-free and flexible metal-organic framework (MOF)-based membranes with high selectivity. The fabricated soft-solid MOF composite membranes showed excellent separation performance for H-2/CO2 separation. This study demonstrates the potential of MOF-based membranes in practical separation applications.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Biochemistry & Molecular Biology
Meor Muhammad Hafiz Shah Buddin, Abdul Latif Ahmad, Muhd Izzudin Fikry Zainuddin
Summary: This study predicted the permeance of CO2 across a ZIF-L@PDMS/PES composite membrane using two different models. The presence of ZIF-L in the PDMS matrix enhanced both the permeability and selectivity of CO2. The performance of the ZIF-L@PDMS layer was well-predicted by the Cussler model and the CO2 permeance across the composite membrane was successfully modeled using the resistance in series model with a correction factor.
Article
Chemistry, Multidisciplinary
Rui Wang, Yisa Zhou, Ya Zhang, Jian Xue, Jurgen Caro, Haihui Wang
Summary: This study presents a simple and efficient strategy for fabricating ionic COF membranes using electrophoretic deposition, resulting in ultrathin membranes with outstanding performance.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Shiyuan Zhu, Quanjie Lin, Xiaopeng Huang, Liangji Chen, Lizhen Liu, Zizhu Yao, Shengchang Xiang
Summary: ZIF-8 membranes prepared on polyamide substrates demonstrated successful separation of acetylene/methane and acetylene/carbon dioxide mixtures with separation factors of 12.1 and 1.8 respectively. The separation mechanism for C2H2/CH4 is attributed to acetylene affinity and molecular sieving, while C2H2/CO2 separation is related to thermodynamic factors. This study marks the first successful separation of C2H2 from CH4 and CO2 by MOF membranes.
