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<p>A new MoS<sub>2</sub>-PDA/PVDF ultrafiltration membrane was prepared by the thermotropic phase separation/non-solvent-induced phase separation (EIPS/NIPS) method. The effects of the addition of MoS<sub>2</sub>-PDA on the hydrophilicity, microscopic morphology, and flux, flux recovery, retention, and anti-fouling properties of the composite membranes with dye wastewater and bovine serum albumin (BSA) solution were investigated. The results showed that compared with the pristine membrane, the maximum water flux of MoS<sub>2</sub>-PDA-modified membrane was 107.8 L/(m<sup>2</sup>‧h), which was 33.58% higher; the retention rates of BSA and various dyestuffs in this membrane were 92% and 95.2%, which were 10.2% and 3.6% higher, respectively; the highest flux recoveries were 88% and 84.6%, both increased by 10%. This indicates that the modified membrane provides a reference for extending the service life of ultrafiltration membranes and can achieve efficient separation and resource recovery of small molecule wastewater.</p> Graphical Abstract <p></p>

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Effective improvement of hydrophilicity and anti-fouling of PDA-modified PVDF membrane by MoS2

  • 期刊论文

  • 发表日期：

    2025年7月5日

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  • Chenyao Liu,
  • Zhixiang Yan,
  • Yanan Xing,
  • Zhiyong Tan

摘要

A new MoS2-PDA/PVDF ultrafiltration membrane was prepared by the thermotropic phase separation/non-solvent-induced phase separation (EIPS/NIPS) method. The effects of the addition of MoS2-PDA on the hydrophilicity, microscopic morphology, and flux, flux recovery, retention, and anti-fouling properties of the composite membranes with dye wastewater and bovine serum albumin (BSA) solution were investigated. The results showed that compared with the pristine membrane, the maximum water flux of MoS2-PDA-modified membrane was 107.8 L/(m2‧h), which was 33.58% higher; the retention rates of BSA and various dyestuffs in this membrane were 92% and 95.2%, which were 10.2% and 3.6% higher, respectively; the highest flux recoveries were 88% and 84.6%, both increased by 10%. This indicates that the modified membrane provides a reference for extending the service life of ultrafiltration membranes and can achieve efficient separation and resource recovery of small molecule wastewater.

Graphical Abstract