Mixed-matrix membranes comprising porous organic molecular cage for efficient CO2 capture
Membrane-based separation technology exhibits significant potential in the fields of CO2 capture and gas purification. Mixed-matrix membranes (MMMs) integrate the easy processing of polymeric materials with excellent transport properties of fillers, and thereby have become a focus for the next-gener...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2024-03-01
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| Series: | Carbon Capture Science & Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2772656823000568 |
| _version_ | 1797267098264666112 |
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| author | Zhiyuan Zha Jixiao Wang Zhi Wang Song Zhao |
| author_facet | Zhiyuan Zha Jixiao Wang Zhi Wang Song Zhao |
| author_sort | Zhiyuan Zha |
| collection | DOAJ |
| description | Membrane-based separation technology exhibits significant potential in the fields of CO2 capture and gas purification. Mixed-matrix membranes (MMMs) integrate the easy processing of polymeric materials with excellent transport properties of fillers, and thereby have become a focus for the next-generation gas separation membranes. Herein, we demonstrated a novel mixed-matrix membrane comprising porous organic molecular cages (POCs) and amine-rich polyvinylamine (PVAm) polymer matrix for efficient CO2 separation. Micro-sized CC3 crystals featuring a pore size of ∼4.9 Å, a high micropore volume of 0.16 cm3 g−1 and specific surface area of 326 m2 g−1 were synthesized and immobilized onto the surface of the PVAm thin selective layer to generate rapid CO2-transport channels. The resulting CC3/PVAm/mPSf MMM displayed excellent binary gas mixture (CO2/N2 15/85 vol %) separation performance, with a high CO2 permeance of 1546 GPU, and appreciable CO2/N2 selectivity of 33 at 1.5 bar, which was superior to most reported POCs-based membranes and thin film composite membranes, accompanied with excellent long-term operational stability. The CO2-selective separation facilitated by the incorporation of POCs provided a new inspiration for the development of novel MMMs for efficient CO2 capture. |
| first_indexed | 2024-03-11T15:18:54Z |
| format | Article |
| id | doaj.art-2ce8ac68c8844ec6afae827072ceacab |
| institution | Directory Open Access Journal |
| issn | 2772-6568 |
| language | English |
| last_indexed | 2024-04-25T01:11:11Z |
| publishDate | 2024-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Carbon Capture Science & Technology |
| spelling | doaj.art-2ce8ac68c8844ec6afae827072ceacab2024-03-10T05:13:27ZengElsevierCarbon Capture Science & Technology2772-65682024-03-0110100152Mixed-matrix membranes comprising porous organic molecular cage for efficient CO2 captureZhiyuan Zha0Jixiao Wang1Zhi Wang2Song Zhao3School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China; Tianjin Key Laboratory of Membrane Science and Desalination Technology, State Key Laboratory of Chemical Engineering (Tianjin University), Tianjin 300072, PR ChinaSchool of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China; Tianjin Key Laboratory of Membrane Science and Desalination Technology, State Key Laboratory of Chemical Engineering (Tianjin University), Tianjin 300072, PR ChinaSchool of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China; Tianjin Key Laboratory of Membrane Science and Desalination Technology, State Key Laboratory of Chemical Engineering (Tianjin University), Tianjin 300072, PR ChinaSchool of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China; Tianjin Key Laboratory of Membrane Science and Desalination Technology, State Key Laboratory of Chemical Engineering (Tianjin University), Tianjin 300072, PR China; Corresponding author.Membrane-based separation technology exhibits significant potential in the fields of CO2 capture and gas purification. Mixed-matrix membranes (MMMs) integrate the easy processing of polymeric materials with excellent transport properties of fillers, and thereby have become a focus for the next-generation gas separation membranes. Herein, we demonstrated a novel mixed-matrix membrane comprising porous organic molecular cages (POCs) and amine-rich polyvinylamine (PVAm) polymer matrix for efficient CO2 separation. Micro-sized CC3 crystals featuring a pore size of ∼4.9 Å, a high micropore volume of 0.16 cm3 g−1 and specific surface area of 326 m2 g−1 were synthesized and immobilized onto the surface of the PVAm thin selective layer to generate rapid CO2-transport channels. The resulting CC3/PVAm/mPSf MMM displayed excellent binary gas mixture (CO2/N2 15/85 vol %) separation performance, with a high CO2 permeance of 1546 GPU, and appreciable CO2/N2 selectivity of 33 at 1.5 bar, which was superior to most reported POCs-based membranes and thin film composite membranes, accompanied with excellent long-term operational stability. The CO2-selective separation facilitated by the incorporation of POCs provided a new inspiration for the development of novel MMMs for efficient CO2 capture.http://www.sciencedirect.com/science/article/pii/S2772656823000568Mixed-matrix membranePorous organic molecular cagePolyvinylamineGas transport channelCO2/N2 separation |
| spellingShingle | Zhiyuan Zha Jixiao Wang Zhi Wang Song Zhao Mixed-matrix membranes comprising porous organic molecular cage for efficient CO2 capture Carbon Capture Science & Technology Mixed-matrix membrane Porous organic molecular cage Polyvinylamine Gas transport channel CO2/N2 separation |
| title | Mixed-matrix membranes comprising porous organic molecular cage for efficient CO2 capture |
| title_full | Mixed-matrix membranes comprising porous organic molecular cage for efficient CO2 capture |
| title_fullStr | Mixed-matrix membranes comprising porous organic molecular cage for efficient CO2 capture |
| title_full_unstemmed | Mixed-matrix membranes comprising porous organic molecular cage for efficient CO2 capture |
| title_short | Mixed-matrix membranes comprising porous organic molecular cage for efficient CO2 capture |
| title_sort | mixed matrix membranes comprising porous organic molecular cage for efficient co2 capture |
| topic | Mixed-matrix membrane Porous organic molecular cage Polyvinylamine Gas transport channel CO2/N2 separation |
| url | http://www.sciencedirect.com/science/article/pii/S2772656823000568 |
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