| Autor: |
Qiang Gao, Shiyu Wang, Yi Xie, Xiaojun Ding, Xiaofeng Xie, Jing Chen, Gang Ye |
| Jazyk: |
angličtina |
| Rok vydání: |
2024 |
| Předmět: |
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| Zdroj: |
Journal of CO2 Utilization, Vol 81, Iss , Pp 102731- (2024) |
| Druh dokumentu: |
article |
| ISSN: |
2212-9839 |
| DOI: |
10.1016/j.jcou.2024.102731 |
| Popis: |
Developing advanced sorbents for selective carbon dioxide (CO2) sequestration with minimal energy consumption remains a pivotal challenge. This study presents a novel strategy through transforming 3D bulk zirconium-porphyrin frameworks into the corresponding 2D nanosheet-assembled superstructures for enhanced CO2 capture. The hierarchical frameworks with well-organized nanosheet architectures exhibit significantly increased specific surface area from 600 m2/g to 2400 m2/g while providing kinetic benefits for gas diffusion. Compared to the adsorption behavior of the bulk counterparts, the nanosheet-assembled frameworks demonstrate a 1.5-fold increase in CO2 adsorption capacity without compromising CO2/N2 selectivity. Theoretical calculation reveals that the coordination unsaturated Zr-O clusters, electron delocalized environments both in interlayer gaps and micropores provided binding sites for CO2 capture. Our research demonstrates an adaptable structure-directed approach for the crystal engineering of metal-organic frameworks which would inspire the creation of state-of-the-art crystalline porous materials for broadened applications. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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Full Text from ScienceDirect