Interfacial interaction mediated diclofenac removal by Fe-MOFs catalytic filtration nanocellulose membrane via peroxodisulfate activation

IF 9 1区工程技术 Q1 ENGINEERING, CHEMICAL

Separation and Purification Technology Pub Date : 2025-08-05 DOI:10.1016/j.seppur.2025.134619

Xin Ji , Zixuan Wu , Yuanhua Liu , Jinze Liu , Yingwei Kou , Huahao Hao , Wenjie Xue , Xiaodong Li , Wei-xian Zhang , Zilong Deng

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引用次数: 0

Abstract

The development of catalytic filtration membrane with high permeability, selectivity and antifouling performance remained challenging. This study fabricated a NH₂-MIL-101(Fe)@ cellulose nanofiber (MIL@CNF) membrane. The introduced NH₂-MIL-101(Fe) might well-enhance the pore size and smoothness of the membrane surface. The water flux of developed membranes were elevated by 2.56–9.13 times with MOFs incorporation owing to rich porous structure, less transmembrane resistance and increased hydrophilicity. The 30-MIL@CNF (MOFs:CNF = 30 %) had the optimal retention (54.5 %) and oxidization properties (89.5 %) for diclofenac (DCF). The oxidation process effectively inhibited fouling on both surfaces and inside pores due to higher peroxodisulfate (PDS) activation ability. Based on the Extended Derjaguin-Landau-Verwey-Overbeek (XDLVO) theory, 30-MIL@CNF and DCF were more inclined to interact with each other via acid-base interactions. Density functional theory (DFT) results showed that MOFs and DCF tended to be hydrogen bonded. Composite membrane predominantly achieved DCF degradation through non-radical pathways (¹O₂ and direct electron transfer). High mineralization efficiency (74.95 %) from TOC results indicated excellent catalytic oxidation performance. The sustainable membrane with both filtration and advanced oxidation functionalities may provide underlying insights for the development of green catalytic filtration system.

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界面相互作用介导fe - mof催化过滤纳米纤维素膜过硫酸盐活化去除双氯芬酸

开发具有高渗透性、选择性和防污性能的催化过滤膜仍然是一个挑战。本研究制备了NH2-MIL-101(Fe)@纤维素纳米纤维（MIL@CNF）膜。NH2-MIL-101（Fe）的加入可以很好地提高膜表面的孔径和光滑度。mof掺入后，膜的水通量提高了2.56 ~ 9.13倍，多孔结构丰富，膜间阻力小，亲水性增强。30-MIL@CNF （MOFs:CNF = 30%）对双氯芬酸（DCF）具有最佳的保留率（54.5%）和氧化性（89.5%）。由于具有较高的过硫酸盐活化能力，氧化过程有效地抑制了表面和孔内的污垢。基于扩展Derjaguin-Landau-Verwey-Overbeek （XDLVO）理论，30-MIL@CNF和DCF更倾向于通过酸碱相互作用相互作用。密度泛函理论（DFT）结果表明mof和DCF趋向于氢键。复合膜主要通过非自由基途径（1O2和直接电子转移）降解DCF。TOC的高矿化率（74.95%）表明其具有良好的催化氧化性能。同时具有过滤和高级氧化功能的可持续膜可能为绿色催化过滤系统的发展提供潜在的见解。

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

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.