Defective iron based metal-organic frameworks derived from zero-valent iron for highly efficient fenton-like catalysis

Limin Duan; Huihao Jiang; Wenhao Wu; Daohui Lin; Kun Yang

doi:10.1016/j.jhazmat.2022.130426

Defective iron based metal-organic frameworks derived from zero-valent iron for highly efficient fenton-like catalysis

J Hazard Mater. 2023 Mar 5:445:130426. doi: 10.1016/j.jhazmat.2022.130426. Epub 2022 Nov 21.

Authors

Limin Duan¹, Huihao Jiang¹, Wenhao Wu¹, Daohui Lin¹, Kun Yang²

Affiliations

¹ Department of Environmental Science, Zhejiang University, Hangzhou 310058, China; Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou 310058, China; Key Laboratory of Environmental Pollution and Ecological Health of Ministry of Education, Hangzhou 310058, China.
² Department of Environmental Science, Zhejiang University, Hangzhou 310058, China; Zhejiang University-Hangzhou Global Scientific and Technological Innovation Center, Hangzhou 311200, China; Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou 310058, China; Key Laboratory of Environmental Pollution and Ecological Health of Ministry of Education, Hangzhou 310058, China. Electronic address: kyang@zju.edu.cn.

PMID: 36462241
DOI: 10.1016/j.jhazmat.2022.130426

Abstract

Introducing crystal defects into iron based metal-organic frameworks (Fe-MOFs) is regarded as a promising strategy to enhance Fenton-like performance. However, developing a facile and effective strategy to construct defective Fe-MOFs as highly efficient Fenton-like catalyst is still a challenge. Herein, MIL-100(Fe) (Def-MIL-100(Fe)) with missing ligands defects was synthesized by a simple heterogeneous reaction using zero-valent iron. The bisphenol A degradation efficiency in the Def-MIL-100(Fe)/H₂O₂ system reached up to 91.26% within 10 min at pH 4 with a low catalyst dosage of 0.05 g/L, while the perfect MIL-100(Fe) has almost no Fenton-like performance. It was observed that missing ligands defects in the Def-MIL-100(Fe) play a key role in the Fenton-like reaction. The missing ligands defects could increase the Lewis acidity for fast H₂O₂ adsorption and accelerate the electron transfer between Fe^II and Fe^III cycling, leading to faster and more·OH generation. Moreover, the missing ligands defects could promote the mass transfer for improving·OH utilization efficiency. This work provides a novel strategy to construct defective Fe-MOFs as highly efficient Fenton-like catalyst to degrade organic pollutants in water.

Keywords: Defect; Fe-MOFs; Fenton-like reaction; Zero-valent iron.

Publication types

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

MeSH terms

Catalysis
Hydrogen Peroxide / chemistry
Iron / chemistry
Metal-Organic Frameworks* / chemistry
Oxidation-Reduction
Water Pollutants, Chemical* / chemistry

Substances

Iron
Metal-Organic Frameworks
Hydrogen Peroxide
Water Pollutants, Chemical