2,3-pyridinedicarboxylic acid-modified MIL-88A(Fe) for enhanced peroxymonosulfate activation to degrade organic contaminants

被引：0

作者：

Wang, Meiling ^{[1
]}

Liu, Xiaochun ^{[1
]}

Li, Kebin ^{[1
]}

Huo, Wenting ^{[1
]}

Wei, Hong ^{[2
]}

Jiang, Hai-Ying ^{[1
]}

机构：

[1] Northwest Univ, Coll Chem & Mat Sci, Key Lab Synthet & Nat Funct Mol, Minist Educ, Xian 710069, Peoples R China

[2] Xian Univ Technol, State Key Lab Ecohydraul Northwest Arid Reg China, Xian 710048, Peoples R China

来源：

JOURNAL OF WATER PROCESS ENGINEERING | 2024年 / 65卷

基金：

中国国家自然科学基金;

关键词：

MIL-88A(Fe); 2,3-Pyridinedicarboxylic acid; Peroxymonosulfate activation; Ligand modification; ONE-STEP SYNTHESIS; SPECTROPHOTOMETRIC DETERMINATION; RADICALS;

D O I：

10.1016/j.jwpe.2024.105779

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Metal-organic framework (MOF)-based composites have shown a great application potential in photoassisted persulfate activation process and environmental remediation. Herein, 2,3-pyridinedicarboxylic acid (PDA) is firstly used to improve the catalytic activity of MIL-88A(Fe). The composite catalysts are effectively synthesized using a solvothermal method. At an 80.2 mg modification level of PDA, the catalyst [MIL-88A(Fe)-PDA-3] could achieve 98.20 % removal of AR18 (acid red 18) through the visible-light-assisted peroxymonosulfate (PMS) activation. It is 7.8-fold increase than pristine MIL-88A(Fe). The suitable conditions for AR18 elimination are 0.4 g/L MIL-88A(Fe)-PDA-3, 1.5 mM PMS and pH = 10. The interplay between influencing factors is explored by a response surface methodology. The quenching studies and EPR tests indicate the generation of active species such as center dot OH, SO4 center dot-, O-1(2), O-2(center dot-), and Fe-IV--O in the reaction system, with center dot OH playing a significant role for AR18 degradation. A potential mechanism is proposed based on the above results. This study offers a fresh perspective for the development of efficient MOFs materials.

引用

页数：12