| Autor: |
Qian Z; Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, School of Chemistry and Chemical Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, PR China., Wang C; School of Engineering, Westlake University, Hangzhou 310024, PR China., Zhou N; Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, School of Chemistry and Chemical Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, PR China., Zhang C; Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, School of Chemistry and Chemical Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, PR China., Goh BT; Low Dimensional Materials Research Centre, Department of Physics., Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia., Dai Z; Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, School of Chemistry and Chemical Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, PR China.; Longgang Institute of Zhejiang Sci-Tech University, Wenzhou 325802, PR China., Peng W; Kente Catalysts Incorporation, Xianju 317300, PR China., Xiong Y; Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, School of Chemistry and Chemical Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, PR China.; Longgang Institute of Zhejiang Sci-Tech University, Wenzhou 325802, PR China.; Zhejiang Sci-Tech University Shengzhou Innovation Institute, Shengzhou 312451, PR China. |
| Abstrakt: |
Covalent triazine frameworks (CTFs) have attracted tremendous attention with respect to their rich nitrogen content, functional triazine units, and high porosity. However, efficient and simple preparation of CTF monoliths is still a challenge. Here, we propose a novel and facile approach for the in situ preparation of CTF aerogels. Trifluoromethanesulfonic acid was used as the solvent and catalyst, which could not only promote the polymerization reaction to form a gel but also protonate the CTFs. By virtue of the simplicity and efficiency of the strategy, a series of macroscopic CTF aerogels with tunable density were obtained by adjusting the monomer concentration. Due to the porous and partially crystalline structure, the as-produced macroscopic CTF aerogels behaved with good mechanical and thermal insulation performances. This finding thus offers an effective and easily scalable approach toward fabricating macroscopic CTF aerogels and broadens the applications of CTFs in a variety of domains. |
