Construction of Hierarchical Fe-MFI Nanosheets with Enhanced Fenton-like Degradation Performance.

IF 4.6 2区化学 Q2 BIOCHEMISTRY & MOLECULAR BIOLOGY

Molecules Pub Date : 2025-10-09 DOI:10.3390/molecules30194030

Haibo Jiang, Lin Xu, Qingrun Meng, Xu Feng, Junxuan Wang, Yankai Li, Junjie Li

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引用次数: 0

Abstract

Introducing hierarchical structure into zeolites or synthesizing two-dimensional (2D) zeolite nanosheets have drawn much attention in catalysis and separation process due to the improvement in zeolites' diffusion properties. In this study, Fe incorporated on the MFI zeolite framework (Fe-MFI) with the nanosheet morphology and unique hierarchical pore structure was successfully synthesized and applied for the adsorption and degradation of Rhodamine B (RhB) in a Fenton-like reaction in the presence of H₂O₂. The synthesis involved a seed-directed hydrothermal method in the presence of NH₄F and a subsequent NaOH treatment made the synthesized hierarchical Fe-MFI nanosheets (Fe-20-10) characterized by abundant highly dispersed framework Fe³⁺ species. As a result of these features, the Fe-20-10 showed excellent ability of adsorption and degradation efficiency of RhB, and enhanced durability due to negligible leaching of framework Fe³⁺ species. Moreover, the hydroxyl radicals were determined as the main the reactive oxygen species of RhB degradation, and a possible adsorption-degradation pathway was proposed. This work offers guidance for developing high-performance Fenton-like degradation catalysts.

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具有增强类芬顿降解性能的分层Fe-MFI纳米片的构建。

在沸石中引入层次结构或合成二维沸石纳米片，可以提高沸石的扩散性能，在催化和分离过程中受到广泛关注。本研究成功合成了具有纳米片形貌和独特层次孔结构的Fe-MFI分子筛骨架（Fe-MFI），并将其应用于H2O2存在下的fenton类反应中对罗丹明B （RhB）的吸附和降解。在NH4F存在下，采用种子导向水热法合成Fe-MFI纳米片，并进行NaOH处理，合成的Fe-20-10纳米片具有丰富的高度分散的Fe3+结构。由于这些特征，Fe-20-10表现出优异的吸附和降解RhB的能力，并且由于可以忽略框架Fe3+的浸出而增强了耐久性。此外，羟基自由基是RhB降解的主要活性氧，并提出了一种可能的吸附降解途径。该研究为开发高性能类芬顿降解催化剂提供了指导。

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

Molecules 化学-有机化学

CiteScore

7.40

自引率

8.70%

发文量

7524

审稿时长

1.4 months

期刊介绍： Molecules (ISSN 1420-3049, CODEN: MOLEFW) is an open access journal of synthetic organic chemistry and natural product chemistry. All articles are peer-reviewed and published continously upon acceptance. Molecules is published by MDPI, Basel, Switzerland. Our aim is to encourage chemists to publish as much as possible their experimental detail, particularly synthetic procedures and characterization information. There is no restriction on the length of the experimental section. In addition, availability of compound samples is published and considered as important information. Authors are encouraged to register or deposit their chemical samples through the non-profit international organization Molecular Diversity Preservation International (MDPI). Molecules has been launched in 1996 to preserve and exploit molecular diversity of both, chemical information and chemical substances.