摘要
In the present study, robust organic/inorganic dual-network membranes were designed by combining the advantages of polysesquioxane with superior thermal and structural stabilities, and polyether with outstanding CO2-philic and film-forming abilities. Specifically, a typical polysesquioxane precursor, bis(triethoxysilyl)ethane (BTESE), was selected to generate the inorganic-based amorphous network via a hydrolysis and condensation process, during which polyethylene glycol (PEG) was introduced to form the organic network. The Si-O-Si network derived from BTESE could provide excellent mechanical stability, while the repeat polar ethylene oxide units contained in PEG were expected to furnish a strong affinity toward CO2 through dipolar-dipolar interactions. In comparison to individual membranes, the dual-network membranes presented both attractive CO2/N2 separation performance and improved structural stability. These dual-network membranes proposed in this work hold great potential in industrial flue gas carbon capture and the strategies for designing such inorganic–organic dual-network membranes could be extended to other robust inorganic–organic hybrid films/materials.
源语言 | 英语 |
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文章编号 | 120189 |
期刊 | Chemical Engineering Science |
卷 | 295 |
DOI | |
出版状态 | 已出版 - 5 8月 2024 |