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<p>In this research work, the novel mixed matrix membranes (MMMs) were fabricated by incorporating citric acid-UiO-66-NH<sub>2</sub> nanoparticles (CAU) into polyethersulfone (PES) membrane via phase inversion method to enhance hydrophilicity properties of MMMs. The influence of nanofiller on the permeability, antifouling behavior, and also cationic dye (methylene blue; MB at 5, 10, 30&#xa0;mg/L) and mono/bivalent salts (NaCl and Na<sub>2</sub>SO<sub>4</sub> at 500 and 1000&#xa0;mg/L, respectively) rejection was carried out. The fabricated membranes were characterized by FESEM, AFM, water contact angel (WCA), pure water flux (PWF), and porosity. Under the best condition (0.1 wt% of CAU), the PWF of CAU-PES membranes (32.43 Kg/m<sup>2</sup>. h) representing ≅ 2 times higher than that of the bare PES membrane (16.34 Kg/m<sup>2</sup>. h). More importantly, antifouling properties of the CAU-PES membranes were also evaluated using bovine serum albumin (BSA, 1000 ppm), and the results confirmed that the MMMs had high antifouling ability (FRR: 95.7% and Rir: 4.26%) at 0.1wt% of CAU-PES. The separation results revealed that the CAU-PES membranes can separate &gt; 70%, 4.54%, and 85.2% of Na<sub>2</sub>SO<sub>4</sub>, NaCl, and MB, respectively. These findings suggested that the CAU-PES membrane can be deemed as a vigorous alternative for efficient treatment of water and wastewater containing dye substances.</p> Graphical Abstract <p></p>

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Polyethersulfone-Based Mixed Matrix Membranes Containing Citric Acid-Amine-Functionalized UiO-66 for Dye/Salt Separation: Synthesis, Characterization, and Separation Mechanism

  • 期刊论文

  • 发表日期：

    2025年8月4日

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  • Danial Nayeri,
  • Seyyed Alireza Mousavi,
  • Sahar Moradi,
  • Fataneh Jafari

摘要

In this research work, the novel mixed matrix membranes (MMMs) were fabricated by incorporating citric acid-UiO-66-NH2 nanoparticles (CAU) into polyethersulfone (PES) membrane via phase inversion method to enhance hydrophilicity properties of MMMs. The influence of nanofiller on the permeability, antifouling behavior, and also cationic dye (methylene blue; MB at 5, 10, 30 mg/L) and mono/bivalent salts (NaCl and Na2SO4 at 500 and 1000 mg/L, respectively) rejection was carried out. The fabricated membranes were characterized by FESEM, AFM, water contact angel (WCA), pure water flux (PWF), and porosity. Under the best condition (0.1 wt% of CAU), the PWF of CAU-PES membranes (32.43 Kg/m2. h) representing ≅ 2 times higher than that of the bare PES membrane (16.34 Kg/m2. h). More importantly, antifouling properties of the CAU-PES membranes were also evaluated using bovine serum albumin (BSA, 1000 ppm), and the results confirmed that the MMMs had high antifouling ability (FRR: 95.7% and Rir: 4.26%) at 0.1wt% of CAU-PES. The separation results revealed that the CAU-PES membranes can separate > 70%, 4.54%, and 85.2% of Na2SO4, NaCl, and MB, respectively. These findings suggested that the CAU-PES membrane can be deemed as a vigorous alternative for efficient treatment of water and wastewater containing dye substances.

Graphical Abstract