Quasi-MIL-101(Fe) with rich oxygen vacancies for boosted heterogeneous photo-Fenton reaction

IF 9 1区工程技术 Q1 ENGINEERING, CHEMICAL Separation and Purification Technology Pub Date : 2025-03-13 DOI:10.1016/j.seppur.2025.132510

Xin-Jie Li , Fei Wang , Jian-Feng Wang , Chong-Chen Wang , Peng Wang , Anping Wang , Xiao-Hong Yi

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Abstract

Herein, a quasi-MOF, namely Q350-MIL-101(Fe), is produced via pyrolysis of MIL-101(Fe) under mild condition at 350 °C, in which its pore size is larger than the pristine MIL-101(Fe). Q350-MIL-101(Fe) is used to catalytically activate H₂O₂ under UV light irradiation for sulfamethoxazole (SMX) decomposition, with degradation rate constant being 28 times higher than that of pristine MIL-101(Fe). The boosted photo-Fenton performance is attributed to the increased exposure of metal sites and the formation of oxygen vacancies (OVs) resulting from the controlled deligand. Finally, Q350-MIL-101(Fe) is immobilized on the graphite felt (GF) for continuous SMX (initial concentration being 10.0 mg/L) degradation, in which 100.0 % SMX degradation efficiency is realized up to 84.0 h. This work presents significant implications to enhance the photo-Fenton ability by constructing a quasi-MOF with rich catalytic sites and OVs for water purification.

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富氧空位准mil -101（Fe）促进非均相光- fenton反应

本文将MIL-101（Fe）在350 ℃温和条件下热解生成准mof，即Q350-MIL-101(Fe)，其孔径大于原始MIL-101（Fe）。利用Q350-MIL-101（Fe）在紫外光照射下催化活化H2O2分解磺胺甲新唑（SMX），降解速率常数比原始MIL-101（Fe）高28倍。光芬顿性能的提高是由于金属位的暴露增加和由受控配体引起的氧空位（OVs）的形成。最后，将Q350-MIL-101（Fe）固定在石墨毛坯（GF）上，连续降解SMX（初始浓度为10.0 mg/L）， SMX的降解效率为100.0% %，达到84.0 h。本研究对构建具有丰富催化位点和ov的准mof用于水净化具有重要意义。

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来源期刊

Separation and Purification Technology 工程技术-工程：化工

CiteScore

14.00

自引率

12.80%

发文量

2347

审稿时长

43 days

期刊介绍： Separation and Purification Technology is a premier journal committed to sharing innovative methods for separation and purification in chemical and environmental engineering, encompassing both homogeneous solutions and heterogeneous mixtures. Our scope includes the separation and/or purification of liquids, vapors, and gases, as well as carbon capture and separation techniques. However, it's important to note that methods solely intended for analytical purposes are not within the scope of the journal. Additionally, disciplines such as soil science, polymer science, and metallurgy fall outside the purview of Separation and Purification Technology. Join us in advancing the field of separation and purification methods for sustainable solutions in chemical and environmental engineering.