Donor-acceptor type two-dimensional porphyrin-based covalent organic framework for visible-light-driven heterogeneous photocatalysis

被引：90

作者：

Shan, Houchao ^{[1
]}

Cai, Di ^{[1
]}

Zhang, Xiaoxia ^{[1
]}

Zhu, Qian ^{[1
]}

Qin, Peiyong ^{[2
]}

Baeyens, Jan ^{[3
,4
]}

机构：

[1] Beijing Univ Chem Technol, Natl Energy R&D Ctr Biorefinery, 15 North 3rd Ring East Rd, Beijing 100029, Peoples R China

[2] Beijing Univ Chem Technol, Coll Life Sci & Technol, 15 North 3rd Ring East Rd, Beijing 100029, Peoples R China

[3] Beijing Univ Chem Technol, Beijing Adv Innovat Ctr Soft Matter Sci & Engn, 15 North 3rd Ring East Rd, Beijing 100029, Peoples R China

[4] Katholieke Univ Leuven, Dept Chem Engn, B-2860 St Katelijne Waver, Belgium

来源：

CHEMICAL ENGINEERING JOURNAL | 2022年 / 432卷

基金：

中国国家自然科学基金;

关键词：

Visible light irradiation; Two-dimensional covalent organic frameworks; Heterogeneous photocatalysis; Metal-free oxidation; Electron donor-acceptor pairs; METAL-FREE; EFFICIENT; NANOPARTICLES; GENERATION; OXIDATION;

D O I：

10.1016/j.cej.2021.134288

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

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.

引用

页数：8

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