Enhanced photo-Fenton degradation of tetracycline hydrochloride by 2, 5-dioxido-1, 4-benzenedicarboxylate-functionalized MIL-100(Fe)

Mingyu Li; Yuhan Ma; Jingjing Jiang; Tianren Li; Chongjun Zhang; Zhonghui Han; Shuangshi Dong

doi:10.1016/j.envres.2022.113399

Enhanced photo-Fenton degradation of tetracycline hydrochloride by 2, 5-dioxido-1, 4-benzenedicarboxylate-functionalized MIL-100(Fe)

Environ Res. 2022 Sep;212(Pt C):113399. doi: 10.1016/j.envres.2022.113399. Epub 2022 May 10.

Authors

Mingyu Li¹, Yuhan Ma¹, Jingjing Jiang¹, Tianren Li¹, Chongjun Zhang², Zhonghui Han¹, Shuangshi Dong³

Affiliations

¹ Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun, 130021, Jilin, China; Jilin Provincial Key Laboratory of Water Resources and Environment, Jilin University, Changchun, 130021, Jilin, China.
² Engineering Lab for Water Pollution Control and Resources Recovery of Jilin Province, School of Environment, Northeast Normal University, Changchun, 130117, China.
³ Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun, 130021, Jilin, China; Jilin Provincial Key Laboratory of Water Resources and Environment, Jilin University, Changchun, 130021, Jilin, China. Electronic address: dongshuangshi@gmail.com.

PMID: 35561828
DOI: 10.1016/j.envres.2022.113399

Abstract

Heterogeneous photo-Fenton technology has drawn tremendous attention for removal of recalcitrant pollutants. Fe-based metal-organic frameworks (Fe-MOFs) are regarded to be superior candidates in wastewater treatment technology. However, the central metal sites of the MOFs are coordinated with the linkers, which reduces active site exposure and decelerates H₂O₂ activation. In this study, a series of 2, 5-dioxido-1, 4-benzenedicarboxylate (H₂DOBDC)-functionalized MIL-100(Fe) with enhanced degradation performance was successfully constructed via solvothermal strategy. The modified MIL-100(Fe) displayed an improvement in photo-Fenton behaviors. The photocatalytic rate constant of optimized MIL-100(Fe)-1/2/3 are 2.3, 3.6 and 4.4 times higher compared with the original MIL-100(Fe). The introduced H₂DOBDC accelerates the separation and transfer in photo-induced charges and promotes Fe(II)/Fe(III) cycle, thus improving the performance. •OH and •O₂^- are main reactive radicals in tetracycline (TCH) degradation. Dealkylation, hydroxylation, dehydration and dealdehyding are the main pathways for TCH degradation.

Keywords: Contaminant removal; Degradation mechanism; H(2)DOBDC-Functionalized MIL-100(Fe); Photo-Fenton.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Catalysis
Ferric Compounds / chemistry
Hydrogen Peroxide / chemistry
Metal-Organic Frameworks*
Tetracycline*

Substances

Ferric Compounds
Hydrogen Peroxide
Metal-Organic Frameworks
Tetracycline