Reverse filling approach to mixed matrix covalent organic framework membranes for gas separation
Abstract Mixed-matrix membranes that combine the merits of polymer and filler materials offer high potential for molecular separations, but precisely engineering the filler phase structure to give full play to the role of filler materials remains challenging. Herein, we explore a reverse-filling app...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-04-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-025-56770-5 |
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| author | Zheyuan Guo Wenping Li Hong Wu Li Cao Shuqing Song Xiaohui Ma Jiafu Shi Yanxiong Ren Tong Huang Yonghong Li Zhongyi Jiang |
| author_facet | Zheyuan Guo Wenping Li Hong Wu Li Cao Shuqing Song Xiaohui Ma Jiafu Shi Yanxiong Ren Tong Huang Yonghong Li Zhongyi Jiang |
| author_sort | Zheyuan Guo |
| collection | DOAJ |
| description | Abstract Mixed-matrix membranes that combine the merits of polymer and filler materials offer high potential for molecular separations, but precisely engineering the filler phase structure to give full play to the role of filler materials remains challenging. Herein, we explore a reverse-filling approach to fabricate mixed-matrix membranes with continuous and vertically penetrating covalent organic framework channels for CO2 separation. Covalent organic framework nanosheets as building blocks are pre-assembled into a robust and vertically oriented covalent organic framework scaffold via ice templating method, with the subsequent polyimide filling into the scaffold. The scaffold inherits the intrinsic CO2-philic pore structure of nanosheets, which serves as fast and selective CO2 transport channels in the membrane. The resulting membrane exhibits high CO2 permeability of 972 Barrer and CO2/CH4 selectivity of 58, along with long-term stability and scale-up capability. This approach may stimulate the thinking about how to design advanced mixed-matrix membranes. |
| format | Article |
| id | doaj-art-c76c50f7e801430693e4fe73c3ed2c15 |
| institution | OA Journals |
| issn | 2041-1723 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj-art-c76c50f7e801430693e4fe73c3ed2c152025-08-20T02:17:50ZengNature PortfolioNature Communications2041-17232025-04-011611910.1038/s41467-025-56770-5Reverse filling approach to mixed matrix covalent organic framework membranes for gas separationZheyuan Guo0Wenping Li1Hong Wu2Li Cao3Shuqing Song4Xiaohui Ma5Jiafu Shi6Yanxiong Ren7Tong Huang8Yonghong Li9Zhongyi Jiang10Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin UniversityKey Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin UniversityKey Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin UniversityKey Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin UniversityKey Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin UniversityKey Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education, School of Materials Science and Engineering, Tianjin UniversityHaihe Laboratory of Sustainable Chemical TransformationsKey Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin UniversityState Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech UniversityKey Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin UniversityKey Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin UniversityAbstract Mixed-matrix membranes that combine the merits of polymer and filler materials offer high potential for molecular separations, but precisely engineering the filler phase structure to give full play to the role of filler materials remains challenging. Herein, we explore a reverse-filling approach to fabricate mixed-matrix membranes with continuous and vertically penetrating covalent organic framework channels for CO2 separation. Covalent organic framework nanosheets as building blocks are pre-assembled into a robust and vertically oriented covalent organic framework scaffold via ice templating method, with the subsequent polyimide filling into the scaffold. The scaffold inherits the intrinsic CO2-philic pore structure of nanosheets, which serves as fast and selective CO2 transport channels in the membrane. The resulting membrane exhibits high CO2 permeability of 972 Barrer and CO2/CH4 selectivity of 58, along with long-term stability and scale-up capability. This approach may stimulate the thinking about how to design advanced mixed-matrix membranes.https://doi.org/10.1038/s41467-025-56770-5 |
| spellingShingle | Zheyuan Guo Wenping Li Hong Wu Li Cao Shuqing Song Xiaohui Ma Jiafu Shi Yanxiong Ren Tong Huang Yonghong Li Zhongyi Jiang Reverse filling approach to mixed matrix covalent organic framework membranes for gas separation Nature Communications |
| title | Reverse filling approach to mixed matrix covalent organic framework membranes for gas separation |
| title_full | Reverse filling approach to mixed matrix covalent organic framework membranes for gas separation |
| title_fullStr | Reverse filling approach to mixed matrix covalent organic framework membranes for gas separation |
| title_full_unstemmed | Reverse filling approach to mixed matrix covalent organic framework membranes for gas separation |
| title_short | Reverse filling approach to mixed matrix covalent organic framework membranes for gas separation |
| title_sort | reverse filling approach to mixed matrix covalent organic framework membranes for gas separation |
| url | https://doi.org/10.1038/s41467-025-56770-5 |
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