期刊
CHEMICAL ENGINEERING JOURNAL
卷 432, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2021.134288
关键词
Visible light irradiation; Two-dimensional covalent organic frameworks; Heterogeneous photocatalysis; Metal-free oxidation; Electron donor-acceptor pairs
资金
- National Key Research and Development Program of China [2018YFB1501703]
- National Natural Science Foundation of China [21978016, 22078018]
Researchers have successfully prepared 2D porphyrin-based donor-acceptor type COFs by adjusting morphology and structure, which demonstrate excellent photocatalytic performance in organic transformations.
Two-dimensional covalent organic frameworks (2D-COFs) with permanent porosity, structural controllability, and excellent stability, are receiving ongoing attention in metal-free heterogeneous photocatalysis of organic conversions. In order to construct high optical performance COFs for selective organic transformation, herein, 2D porphyrin-based donor-acceptor (D-A) type COFs were prepared by adjusting the morphology and structure. The as-synthesized COFs facilitate charge transfer and separation of photogenerated electron-hole pairs, efficaciously producing superoxide radical anions as mediates for selective oxidation of sulfides (97% conversion and 99% of selectivity) and reductive dehalogenation of 2-bromoacetophenone (up to 99% conversion and 82% of yield). The COFs have excellent stability and recyclability, demonstrating that the 2D D-A type COFs are attractive as heterogeneous photocatalyst for visible light driven organics transformation.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据