Boosting CO2 separation in porphyrinic MOF-based mixed matrix membranes via central metal atom integration
As atmospheric CO2 levels continue to rise, contributing to the climate crisis, there is an increasing urgency to separate this gas from others and to expedite related research. Metal-Organic Frameworks (MOFs), known for their porosity and tunability, have already made significant impacts in this fi...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2024-12-01
|
| Series: | Carbon Capture Science & Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2772656824000642 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850061914266140672 |
|---|---|
| author | Nicholaus Prasetya Hasan Can Gülbalkan Seda Keskin Christof Wöll |
| author_facet | Nicholaus Prasetya Hasan Can Gülbalkan Seda Keskin Christof Wöll |
| author_sort | Nicholaus Prasetya |
| collection | DOAJ |
| description | As atmospheric CO2 levels continue to rise, contributing to the climate crisis, there is an increasing urgency to separate this gas from others and to expedite related research. Metal-Organic Frameworks (MOFs), known for their porosity and tunability, have already made significant impacts in this field, particularly to be used as part of a membrane material. This study introduces a novel method to enhance the CO2 separation capabilities of MOFs-based mixed matrix membranes (MMMs). Instead of taking the traditional approach by functionalizing the MOF's ligands or varying the metal or metal-oxo MOF nodes, we harness the properties of metal atoms by integrating them as central elements within porphyrinic MOF linkers through a simple post-metalation method. As a result, by incorporating the post-metalated MOF-525 as fillers into the 6FDA-DAM (6FDA: 2,2-bis(3,4-dicarboxyphenyl)hexafluoropropane dianhydride; DAM: 2,4,6-trimethyl-1,3-diaminobenzene) polymer to fabricate MMMs, we effectively demonstrate improved CO2/N2 and CO2/CH4 gas separation capabilities of around 20 % without the necessity to use a very high MOF loading (only 2 wt%). Further analysis on the gas transport reveals that such a performance improvement mainly comes from the enhanced CO2 solubility, which might be attributed to the presence of the metal atoms in the post-metalated MOF 525. Lastly, in order to get a more comprehensive understanding, we also carry out a computational study as a tool to validate and predict the experimental results of our MMMs. This study then opens up the possibility to further investigate the efficacy of introducing various metal atoms in other porphyrinic MOFs when they are used as fillers to significantly boost the CO2 separation performance of MMMs. |
| format | Article |
| id | doaj-art-dba9eb14c58d4bbf84e660b4da6fc976 |
| institution | DOAJ |
| issn | 2772-6568 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Carbon Capture Science & Technology |
| spelling | doaj-art-dba9eb14c58d4bbf84e660b4da6fc9762025-08-20T02:50:04ZengElsevierCarbon Capture Science & Technology2772-65682024-12-011310025210.1016/j.ccst.2024.100252Boosting CO2 separation in porphyrinic MOF-based mixed matrix membranes via central metal atom integrationNicholaus Prasetya0Hasan Can Gülbalkan1Seda Keskin2Christof Wöll3Institute of Functional Interface (IFG), Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, Eggenstein-Leopoldshafen 76344, Germany; Corresponding author.Department of Chemical and Biological Engineering, Koç University, Rumelifeneri Yolu, Sariyer, Istanbul 34450, TurkeyDepartment of Chemical and Biological Engineering, Koç University, Rumelifeneri Yolu, Sariyer, Istanbul 34450, TurkeyInstitute of Functional Interface (IFG), Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, Eggenstein-Leopoldshafen 76344, GermanyAs atmospheric CO2 levels continue to rise, contributing to the climate crisis, there is an increasing urgency to separate this gas from others and to expedite related research. Metal-Organic Frameworks (MOFs), known for their porosity and tunability, have already made significant impacts in this field, particularly to be used as part of a membrane material. This study introduces a novel method to enhance the CO2 separation capabilities of MOFs-based mixed matrix membranes (MMMs). Instead of taking the traditional approach by functionalizing the MOF's ligands or varying the metal or metal-oxo MOF nodes, we harness the properties of metal atoms by integrating them as central elements within porphyrinic MOF linkers through a simple post-metalation method. As a result, by incorporating the post-metalated MOF-525 as fillers into the 6FDA-DAM (6FDA: 2,2-bis(3,4-dicarboxyphenyl)hexafluoropropane dianhydride; DAM: 2,4,6-trimethyl-1,3-diaminobenzene) polymer to fabricate MMMs, we effectively demonstrate improved CO2/N2 and CO2/CH4 gas separation capabilities of around 20 % without the necessity to use a very high MOF loading (only 2 wt%). Further analysis on the gas transport reveals that such a performance improvement mainly comes from the enhanced CO2 solubility, which might be attributed to the presence of the metal atoms in the post-metalated MOF 525. Lastly, in order to get a more comprehensive understanding, we also carry out a computational study as a tool to validate and predict the experimental results of our MMMs. This study then opens up the possibility to further investigate the efficacy of introducing various metal atoms in other porphyrinic MOFs when they are used as fillers to significantly boost the CO2 separation performance of MMMs.http://www.sciencedirect.com/science/article/pii/S2772656824000642MOF-525Post-Metalated MOF-525Mixed matrix membranesCO2 separation |
| spellingShingle | Nicholaus Prasetya Hasan Can Gülbalkan Seda Keskin Christof Wöll Boosting CO2 separation in porphyrinic MOF-based mixed matrix membranes via central metal atom integration Carbon Capture Science & Technology MOF-525 Post-Metalated MOF-525 Mixed matrix membranes CO2 separation |
| title | Boosting CO2 separation in porphyrinic MOF-based mixed matrix membranes via central metal atom integration |
| title_full | Boosting CO2 separation in porphyrinic MOF-based mixed matrix membranes via central metal atom integration |
| title_fullStr | Boosting CO2 separation in porphyrinic MOF-based mixed matrix membranes via central metal atom integration |
| title_full_unstemmed | Boosting CO2 separation in porphyrinic MOF-based mixed matrix membranes via central metal atom integration |
| title_short | Boosting CO2 separation in porphyrinic MOF-based mixed matrix membranes via central metal atom integration |
| title_sort | boosting co2 separation in porphyrinic mof based mixed matrix membranes via central metal atom integration |
| topic | MOF-525 Post-Metalated MOF-525 Mixed matrix membranes CO2 separation |
| url | http://www.sciencedirect.com/science/article/pii/S2772656824000642 |
| work_keys_str_mv | AT nicholausprasetya boostingco2separationinporphyrinicmofbasedmixedmatrixmembranesviacentralmetalatomintegration AT hasancangulbalkan boostingco2separationinporphyrinicmofbasedmixedmatrixmembranesviacentralmetalatomintegration AT sedakeskin boostingco2separationinporphyrinicmofbasedmixedmatrixmembranesviacentralmetalatomintegration AT christofwoll boostingco2separationinporphyrinicmofbasedmixedmatrixmembranesviacentralmetalatomintegration |