Installing earth-abundant metal active centers to covalent organic frameworks for efficient heterogeneous photocatalytic CO2 reduction
Lu, M (Lu, Meng)[ 1 ] ; Li, Q (Li, Qiang)[ 2 ] ; Liu, J (Liu, Jiang)[ 1 ]*（刘江）; Zhang, FM (Zhang, Feng-Ming)[ 3 ] ; Zhang, L (Zhang, Lei)[ 1 ] ; Wang, JL (Wang, Jin-Lan)[ 2 ] ; Kang, ZH (Kang, Zhen-Hui)[ 4 ]*; Lan, YQ (Lan, Ya-Qian)[ 1 ]*（兰亚乾）

[ 1 ] Nanjing Normal Univ, Jiangsu Collaborat Innovat Ctr Biomed Funct Mat, Sch Chem & Mat Sci, Jiangsu Key Lab New Power Batteries, Nanjing 210023, Jiangsu, Peoples R China
[ 2 ] Southeast Univ, Sch Phys, Nanjing 211189, Jiangsu, Peoples R China
[ 3 ] Harbin Univ Sci & Technol, Coll Chem & Environm Engn, Harbin 150040, Heilongjiang, Peoples R China
[ 4 ] Soochow Univ, Inst Funct Nano & Soft Mat, Jiangsu Key Lab Carbon Based Funct Mat & Devices, Suzhou 215123, Peoples R China

APPLIED CATALYSIS B-ENVIRONMENTAL，201910,254,624-633

Photocatalytic conversion of CO2 into energy carriers has been recognized as a highly promising strategy for achieving the virtuous carbon cycle in nature. The realization of this process depends on an efficient catalyst to reduce the reaction barrier. Herein, we report a series of transition metal ion modified crystalline covalent organic frameworks (COFs) for the heterogeneous photocatalytic reduction of CO2. By coordinating different kinds of open metal active species into COFs, the resultant DQTP (2,6-diaminoanthraquinone - 2,4,6-tri-formylphloroglucinol) COF-M (M = Co/Ni/Zn) exerts a strong influence on the activity and selectivity of products (CO or HCOOH). Significantly, DQTP COF-Co exhibits a high CO production rate of 1.02 x 10(3)mu mol h(-1) g(-1), while DQTP COF-Zn has a high selectivity (90% over CO) for formic acid generation (152.5 mu mol h(-1) g(-1)). This work highlights the great potential of using stable COFs as platforms to anchor earth-abundant metal active sites for heterogeneous CO2 reduction.

文章链接：
https://www.sciencedirect.com/science/article/pii/S0926337319304692?via%3Dihub

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