Atomically distributed Al-F3 nanoparticles towards precisely modulating pore size of carbon membranes for gas separation
Abstract To confront the energy consumption, high performance membrane materials are urgently needed. Carbon molecular sieve (CMS) membranes exhibit superior capability in separating gas mixtures efficiently. However, it remains a grand challenge to precisely tune the pore size and distribution of C...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-01-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-024-54275-1 |
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| author | Xiuling Chen Zhiguang Zhang Shan Xu Bin Zhang Yong Qin Canghai Ma Gaohong He Nanwen Li |
| author_facet | Xiuling Chen Zhiguang Zhang Shan Xu Bin Zhang Yong Qin Canghai Ma Gaohong He Nanwen Li |
| author_sort | Xiuling Chen |
| collection | DOAJ |
| description | Abstract To confront the energy consumption, high performance membrane materials are urgently needed. Carbon molecular sieve (CMS) membranes exhibit superior capability in separating gas mixtures efficiently. However, it remains a grand challenge to precisely tune the pore size and distribution of CMS membranes to further improve their molecular sieving properties. Herein, we report an approach of finely modulating CMS pore structure by using the reactive Al(CH3)3 to in situ defluorinate the polymer precursor to form Al-Fx(CH3)3-x in the polymer matrix, which is further converted to atomic-level Al2O3 and Al-F3 in the polymer matrix. These nanoparticles play the key role in regulating the pore size of CMS membranes by suppressing the formation of unfavorable large pores during pyrolysis, thus enhancing the gas selectivity considerably. The resultant CMS membranes demonstrate a H2/CH4 and CO2/CH4 selectivity of 192.6, and 58.4, respectively, 128% and 93% higher than the untreated samples, residing far above the latest upper bounds. |
| format | Article |
| id | doaj-art-87f6ff0aa91b4dcfb67a960f4f6769d3 |
| institution | Kabale University |
| issn | 2041-1723 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj-art-87f6ff0aa91b4dcfb67a960f4f6769d32025-01-05T12:38:42ZengNature PortfolioNature Communications2041-17232025-01-0116111010.1038/s41467-024-54275-1Atomically distributed Al-F3 nanoparticles towards precisely modulating pore size of carbon membranes for gas separationXiuling Chen0Zhiguang Zhang1Shan Xu2Bin Zhang3Yong Qin4Canghai Ma5Gaohong He6Nanwen Li7State Key Laboratory of Coal Conversion, Institute of Coal Chemistry Chinese Academy of SciencesState Key Laboratory of Coal Conversion, Institute of Coal Chemistry Chinese Academy of SciencesState Key Laboratory of Coal Conversion, Institute of Coal Chemistry Chinese Academy of SciencesState Key Laboratory of Coal Conversion, Institute of Coal Chemistry Chinese Academy of SciencesState Key Laboratory of Coal Conversion, Institute of Coal Chemistry Chinese Academy of SciencesState Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, School of Chemical Engineering, Dalian University of TechnologyState Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, School of Chemical Engineering, Dalian University of TechnologyState Key Laboratory of Coal Conversion, Institute of Coal Chemistry Chinese Academy of SciencesAbstract To confront the energy consumption, high performance membrane materials are urgently needed. Carbon molecular sieve (CMS) membranes exhibit superior capability in separating gas mixtures efficiently. However, it remains a grand challenge to precisely tune the pore size and distribution of CMS membranes to further improve their molecular sieving properties. Herein, we report an approach of finely modulating CMS pore structure by using the reactive Al(CH3)3 to in situ defluorinate the polymer precursor to form Al-Fx(CH3)3-x in the polymer matrix, which is further converted to atomic-level Al2O3 and Al-F3 in the polymer matrix. These nanoparticles play the key role in regulating the pore size of CMS membranes by suppressing the formation of unfavorable large pores during pyrolysis, thus enhancing the gas selectivity considerably. The resultant CMS membranes demonstrate a H2/CH4 and CO2/CH4 selectivity of 192.6, and 58.4, respectively, 128% and 93% higher than the untreated samples, residing far above the latest upper bounds.https://doi.org/10.1038/s41467-024-54275-1 |
| spellingShingle | Xiuling Chen Zhiguang Zhang Shan Xu Bin Zhang Yong Qin Canghai Ma Gaohong He Nanwen Li Atomically distributed Al-F3 nanoparticles towards precisely modulating pore size of carbon membranes for gas separation Nature Communications |
| title | Atomically distributed Al-F3 nanoparticles towards precisely modulating pore size of carbon membranes for gas separation |
| title_full | Atomically distributed Al-F3 nanoparticles towards precisely modulating pore size of carbon membranes for gas separation |
| title_fullStr | Atomically distributed Al-F3 nanoparticles towards precisely modulating pore size of carbon membranes for gas separation |
| title_full_unstemmed | Atomically distributed Al-F3 nanoparticles towards precisely modulating pore size of carbon membranes for gas separation |
| title_short | Atomically distributed Al-F3 nanoparticles towards precisely modulating pore size of carbon membranes for gas separation |
| title_sort | atomically distributed al f3 nanoparticles towards precisely modulating pore size of carbon membranes for gas separation |
| url | https://doi.org/10.1038/s41467-024-54275-1 |
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