Iron-decorated covalent organic framework as efficient catalyst for activating peroxydisulfate to degrade 2,4-dichlorophenol: Performance and mechanism insight

被引：14
作者：
Han, Yuhang [1 ,2 ]
Tai, Meng [1 ,2 ]
Yao, Yuxin [1 ,2 ]
Li, Jingyang [1 ]
Wu, Yuanyuan [1 ,2 ]
Hu, Bo [1 ,2 ]
Ma, Yunchao [1 ,2 ]
Liu, Chunbo [1 ,3 ]
机构：
[1] Jilin Normal Univ, Key Lab Preparat & Applicat Environmen Friendly Ma, Minist Educ, Changchun 130103, Peoples R China
[2] Jilin Normal Univ, Coll Chem, Siping 136000, Peoples R China
[3] Jilin Normal Univ, Coll Engn, Jilin Joint Technol Innovat Lab Developing & Utili, Siping 136000, Peoples R China
来源：
JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2024年 / 663卷
关键词：
Covalent organic frameworks; Peroxydisulfate; Degradation; 2,4-dichlorophenol; PERSULFATE; PRODUCTS;
D O I：
10.1016/j.jcis.2024.02.165
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Herein, a novel two-dimensional double -pore covalent organic framework (JLNU-305) was synthesized using N, N,N',N'-tetrakis(4-aminophenyl)-1,4-phenylenediamine (TAPD) and 2,2 '-bipyridine-5,5 '-dicarboxaldehyde (BPDA). The extended pi-pi conjugated structure and nitrogen-riched pyridine in JLNU-305 (JLNU = Jilin Normal University) provide abundant binding sites for Fe doping. The obtained JLNU-305-Fe exhibited high and recycled catalytic efficiency for peroxydisulfate (PDS) activation to completely degrade 10 mg/L 2,4-dichlorophenol (2,4DCP) within 8 min. The JLNU-305-Fe/PDS system showed excellent catalytic activity and cyclic stability. The capture experiments and electron paramagnetic resonance (ESR) analysis indicated that the catalytic behavior of JLNU-305-Fe/PDS is contributed to the synergistic effect between free radicals and non -free radicals. It is the first time to activate PDS for covalent organic frameworks (COFs) being used to degrade 2,4-DCP, which has a great potential for development and practical application in related water environment remediation.
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页码：238 / 250
页数：13
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