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Tailoring Amine-Functionalized Ti-MOFs via a Mixed Ligands Strategy for High-Efficiency $CO_{2}$ Capture
| Content Provider | MDPI |
|---|---|
| Author | Wan, Yinji Miao, Yefan Qiu, Tianjie Kong, Dekai Wu, Yingxiao Zhang, Qiuning Shi, Jinming Zhong, Ruiqin Zou, Ruqiang |
| Copyright Year | 2021 |
| Description | Amine-functionalized metal-organic frameworks (MOFs) are a promising strategy for the high-efficiency capture and separation of $CO_{2}$. In this work, by tuning the ratio of 1,3,5-benzenetricarboxylic acid $(H_{3}$BTC) to 5-aminoisophthalic acid $(5-NH_{2}-H_{2}$IPA), we designed and synthesized a series of amine-functionalized highly stable Ti-based MOFs (named $MIP-207-NH_{2}$-n, in which n represents 15%, 25%, 50%, 60%, and 100%). The structural analysis shows that the original framework of MIP-207 in the $MIP-207-NH_{2}$-n (n = 15%, 25%, and 50%) MOFs remains intact when the mole ratio of ligand $H_{3}$BTC to $5-NH_{2}-H_{2}$IPA is less than 1 to 1 in the resulting MOFs. By the introduction of amino groups, $MIP-207-NH_{2}$-25% demonstrates outstanding $CO_{2}$ capture performance up to 3.96 and 2.91 mmol $g^{−1}$, 20.7% and 43.3% higher than those of unmodified MIP-207 at 0 and 25 °C, respectively. Furthermore, the breakthrough experiment indicates that the dynamic $CO_{2}$ adsorption capacity and $CO_{2}/N_{2}$ separation factors of $MIP-207-NH_{2}$-25% are increased by about 25% and 15%, respectively. This work provides an additional strategy to construct amine-functionalized MOFs with the maintenance of the original MOF structure and high performance of $CO_{2}$ capture and separation. |
| Starting Page | 3348 |
| e-ISSN | 20794991 |
| DOI | 10.3390/nano11123348 |
| Journal | Nanomaterials |
| Issue Number | 12 |
| Volume Number | 11 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2021-12-10 |
| Access Restriction | Open |
| Subject Keyword | Nanomaterials Inorganic Chemistry Ti-mofs Amine Functionalization Co2 Capture Separation Breakthrough Experiment |
| Content Type | Text |
| Resource Type | Article |
