期刊
ACS APPLIED MATERIALS & INTERFACES
卷 13, 期 25, 页码 29916-29925出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.1c06008
关键词
photocatalysis; NH2-UiO-66; covalent organic frameworks; hybrid materials; stability and photocatalytic activity
资金
- National Natural Science Foundation of China [22072100]
- Department of Science and Technology of Sichuan Province [2021YFSY0048]
The coupling of NH2-UiO-66 with COFs can improve its photocatalytic performance and stability, with high stability in alkaline environment and good photocatalytic H-2 evolution rate.
The poor stability and low catalytic activity of NH2-UiO-66 in basic solutions require the reactions to be conducted in acidic solutions, which seriously hinders its potential photocatalytic application. Herein, we report that NH2-UiO-66 coated with two-dimensional covalent organic frameworks (COFs) via imine bond connection presents not only high photocatalytic activity but also high stability and adaptability to the solution environment. The NH2-UiO-66/COF hybrid material was fabricated through the Schiff base reaction of NH2-UiO-66 with 4,4',4.-(1,3,5-triazine-2,4,6-triyl)trianiline (TAPT) and 2,4,6-triformylphloroglucinol (TP). The hybrid material showed high stability in an alkaline environment, with only 4.7% of NH2-UiO-66 decomposed after the photocatalytic reaction. The optimum photocatalytic H-2 evolution rate was 8.44 mmol.h(-1).g(-1) when triethanolamine was used as an electron-donating agent. The results presented here illustrate the possibility for effectively improving both the photocatalytic performance and stability of NH2-UiO-66 by coupling with COFs.
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