Constructing Stable and Porous Covalent Organic Frameworks for Efficient Iodine Vapor Capture
| Autor: | Diandian Han, Riming Nie, Jinhuan Dong, Xiubei Yang, Zhongping Li, Xiaolong Luo, Wenqian Jiang, Lipeng Zhai |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Polymers and Plastics 02 engineering and technology Iodine vapor 010402 general chemistry 01 natural sciences Iodine Radioisotopes Human health Materials Chemistry High surface area Humans Thyroid Neoplasms Porosity Metal-Organic Frameworks chemistry.chemical_classification Organic Chemistry Polymer 021001 nanoscience & nanotechnology 0104 chemical sciences Chemical engineering chemistry Covalent bond Chemical stability Radioactive iodine 0210 nano-technology Iodine |
| Zdroj: | Macromolecular rapid communications. 42(13) |
| ISSN: | 1521-3927 |
| Popis: | Covalent organic frameworks (COF) with periodic porous structures and tunable functionalities are a new class of crystalline polymers connected via strong covalent bonds. Constructing COF materials with high stability and porosity is attracting and essential for COFs' further functional exploration. In this work, two new covalent organic frameworks (TTA-TMTA-COF and TTA-FMTA-COF) with high surface area, large pore volume, and excellent chemical stability toward harsh conditions are designed and synthesized by integrating the methoxy functional groups into the networks. Both two COFs are further employed for iodine removal since radioactive iodine in nuclear waste has seriously threatened the natural environment and human health. TTA-TMTA-COF and TTA-FMTA-COF can capture 3.21 and 5.07 g g-1 iodine, respectively. Notably, the iodine capture capacity for iodine of TTA-FMTA-COF does not show any decline after being recycled five times. These results demonstrate both COFs possess ultrahigh capacity and excellent recyclability. |
| Databáze: | OpenAIRE |
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