One-dimensional phenanthroline-based covalent organic framework bearing single cobalt atoms for efficient photocatalytic CO_(2) reduction  

作　　者：Lv-Ye Ai Qian Wang Xiao-Wen Chen Guo-Fang Jiang 

机构地区：[1]State Key Lab of Chemo/Biosensing and Chemometrics,College of Chemistry and Chemical Engineering,Hunan University,Changsha,Hunan,China [2]School of Materials and Environmental Engineering,Shenzhen Polytechnic,Shenzhen,Guangdong,China

出　　处：《Aggregate》2024年第5期331-339,共9页聚集体（英文）

基　　金：National Natural Science Foundation of China,Grant/Award Number:51578224;Scientific Research Start-up Project for Advanced Talents in Shenzhen City,Grant/Award Number:6023330001K。

摘　　要：Metalated covalent organic frameworks(COFs)for 2D and 3D topologies are continuously being developed,whereas metalated COFs with 1D topologies are still in their infancy.Here,a novel 1D phenanthroline-based COF containing 4,4-(1,10-phenanthroline-2,9-diyl)bis[benzaldehyde](PBA)is reported(PAD-COF).Subsequently,a metalated 1D COF,Co SAS/PAD-COF,is constructed using the bidentate ligand properties of PBA and anchoring the single Co atoms in PAD-COF through a post-synthetic modification strategy.This complex significantly improved the photocatalytic performance of PAD-COF,and the CO yield of the optimized Co SAS/PAD-COF was stable at 3091µmol g^(-1) h^(-1) with a selectivity of 93%,which is approximately 43.7 times that of the original PAD-COF.Experimental and theoretical results demonstrate the excellent CO_(2) photoreduction activity of Co SAS/PAD-COF owing to the synergistic effect of single Co catalytic sites and PAD-COF.Among them,PAD-COF,as the host,adsorbs CO_(2) molecules and loads single Co atoms.Meanwhile,Co atoms function as catalytic sites and promote the adsorp-tion and activation of CO_(2),while reducing the reaction energy barrier formed by the*COOH intermediates.Therefore,this unique metalated 1D COF provides a fresh approach to photocatalytic CO_(2) reduction.

关 键 词：1D phenanthroline-based covalent organic framework metalated photocatalytic CO_(2) reduction single Co atoms 

分 类 号：O64[理学—物理化学]