An efficient photo Fenton system for in-situ evolution of H2O2via defective iron-based metal organic framework@ZnIn2S4 core-shell Z-scheme heterojunction nanoreactor

Meijie Liu; Zipeng Xing; Huanan Zhao; Sijia Song; Yichao Wang; Zhenzi Li; Wei Zhou

doi:10.1016/j.jhazmat.2022.129436

An efficient photo Fenton system for in-situ evolution of H₂O₂via defective iron-based metal organic framework@ZnIn₂S₄ core-shell Z-scheme heterojunction nanoreactor

J Hazard Mater. 2022 Sep 5:437:129436. doi: 10.1016/j.jhazmat.2022.129436. Epub 2022 Jun 21.

Authors

Meijie Liu¹, Zipeng Xing², Huanan Zhao¹, Sijia Song¹, Yichao Wang¹, Zhenzi Li³, Wei Zhou⁴

Affiliations

¹ Department of Environmental Science, School of Chemistry and Materials Science, Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin 150080, PR China.
² Department of Environmental Science, School of Chemistry and Materials Science, Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin 150080, PR China. Electronic address: [email protected].
³ Shandong Provincial Key Laboratory of Molecular Engineering, School of Chemistry and Chemical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, PR China.
⁴ Department of Environmental Science, School of Chemistry and Materials Science, Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin 150080, PR China; Shandong Provincial Key Laboratory of Molecular Engineering, School of Chemistry and Chemical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, PR China. Electronic address: [email protected].

PMID: 35897176
DOI: 10.1016/j.jhazmat.2022.129436

Abstract

The fabrication of an efficient photoFenton system without the addition of H₂O₂ is still a challenge and is cost-effective and favorable for practical applications. In this work, a core@shell Z-scheme heterojunction nanoreactor was successfully fabricated, in which hierarchical two-dimensional (2D) ZnIn₂S₄ nanosheets are coated on defective iron-based metal-organic frameworks (MOFs) (NH₂-MIL-88B(Fe)), realizing efficient in-situ evolution of H₂O₂ and constructing an optimal heterogeneous Fenton platform. The degradation rates of defective NH₂-MIL-88B(Fe)@ZnIn₂S₄ (0.4 g L^-1) for bisphenol A and ofloxacin under visible light irradiation within 180 min reached 99.4% and 98.5%, respectively, and the photocatalytic hydrogen production efficiency was approximately 502 μmol h^-1 g^-1. The excellent photoFenton performance was attributed to the introduction of ligand defects into the MOF, which can adjust the band structure to enhance the light absorption capacity, and the in-situ generation of H₂O₂ accelerating the Fe³⁺/Fe²⁺ conversion. In addition, the formation of the core@shell nanoreactor Z-scheme heterojunction structure promoted spatial charge separation. This strategy offers new ideas for constructing efficient photocatalysis and photoFenton systems.

Keywords: In-situ H(2)O(2); Ligand defect; Metal organic framework; PhotoFenton; Z-scheme.