A stabilized Z-type NH2-MIL101(Fe, Cu)/WO3 composite enhancing photo-Fenton like degradation of levofloxacin

IF 3.8 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Optical Materials Pub Date : 2025-05-11 DOI:10.1016/j.optmat.2025.117117

Yuxi Liu, Wenjing Zhang, Weimeng Chi, Yuxuan Liu, Ying Chen, Yuning Liang

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引用次数: 0

Abstract

As a potential Fenton catalyst, Fe-based organic frameworks (Fe-MOFs) severely limit their application in practical heavy pollution due to their slow cycling rate. In this work, a novel photocatalyst (NH₂-MIL101(Fe, Cu)/WO₃) was synthesized using a two-step hydrothermal method. Research on photocatalytic activity revealed that NH₂-MIL101(Fe, Cu)/WO₃, when combined with H₂O₂, exhibits higher degradation efficiency compared than pure NH₂-MIL101(Fe, Cu) or WO₃ alone, achieving up to 90 % degradation of levofloxacin (LEV) under visible light irradiation. In addition, the effects of hydrogen peroxide dosage, pH and other factors on degradation performance were studied, and the results demonstrated good stability even after multiple cycles. This excellent photocatalytic performance is attributed to the formation of heterogeneous structures as well as the doping of copper ions. This not only inhibits the electron-hole recombination, but also improves the redox capacity of the catalyst accelerating the regeneration of Fe³⁺. This work offers a way to enhance the photo-Fenton activity of Fe-MOF-based catalysts.

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稳定的z型NH2-MIL101(Fe, Cu)/WO3复合材料促进光- fenton降解左氧氟沙星

铁基有机骨架（Fe-MOFs）作为一种潜在的Fenton催化剂，由于其循环速度慢，严重限制了其在实际重污染中的应用。本文采用两步水热法合成了一种新型光催化剂NH2-MIL101(Fe, Cu)/WO3。光催化活性研究表明，NH2-MIL101(Fe, Cu)/WO3与H2O2结合时，比单纯的NH2-MIL101（Fe, Cu）或WO3具有更高的降解效率，在可见光照射下对左氧氟沙星（LEV）的降解率可达90%。此外，还研究了过氧化氢用量、pH等因素对降解性能的影响，结果表明，多次循环后仍具有良好的稳定性。这种优异的光催化性能归功于非均相结构的形成以及铜离子的掺杂。这不仅抑制了电子-空穴复合，而且提高了催化剂的氧化还原能力，加速了Fe3+的再生。本研究为提高fe - mof基催化剂的光芬顿活性提供了一条途径。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Optical Materials 工程技术-材料科学：综合

CiteScore

6.60

自引率

12.80%

发文量

1265

审稿时长

38 days

期刊介绍： Optical Materials has an open access mirror journal Optical Materials: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. The purpose of Optical Materials is to provide a means of communication and technology transfer between researchers who are interested in materials for potential device applications. The journal publishes original papers and review articles on the design, synthesis, characterisation and applications of optical materials. OPTICAL MATERIALS focuses on: • Optical Properties of Material Systems; • The Materials Aspects of Optical Phenomena; • The Materials Aspects of Devices and Applications. Authors can submit separate research elements describing their data to Data in Brief and methods to Methods X.