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<p>To address the issues of poor wettability, low separation flux, and limited functionality in traditional separation membranes, this study developed an eco-friendly, multifunctional composite membrane based on polylactic acid (PLA/PVP-PDMS/Fe<sub>2</sub>O<sub>4</sub>/TiO<sub>2</sub>) by combining electrospinning with electrostatic spraying technology. Through morphological and structural characterization, it was demonstrated that the composite membrane exhibits a multiscale rough structure, combining magnetic responsiveness with UV resistance. The results demonstrate that the composite membrane exhibits outstanding oil–water separation performance, achieving a separation flux of up to 4882.15 L·m<sup>−2</sup>·h<sup>−1</sup> and a separation efficiency of 99.53%. With a water contact angle as high as 155.5° and a rolling angle as low as 4.5°, it displays superhydrophobic properties and excellent anti-fouling characteristics. In addition, this composite membrane demonstrates excellent potential for treating wastewater in corrosive environments, maintaining a hydrophobic angle above 150° across various corrosive conditions.</p>

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Green superhydrophobic membranes with magnetic responsiveness and UV resistance for oil–water separation

  • 期刊论文

  • 发表日期：

    2025年12月21日

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  • Yangxuan Xie,
  • Xinmei Li,
  • Liping Wu,
  • Peihao Zhang,
  • Aixiang Zhang

摘要

To address the issues of poor wettability, low separation flux, and limited functionality in traditional separation membranes, this study developed an eco-friendly, multifunctional composite membrane based on polylactic acid (PLA/PVP-PDMS/Fe2O4/TiO2) by combining electrospinning with electrostatic spraying technology. Through morphological and structural characterization, it was demonstrated that the composite membrane exhibits a multiscale rough structure, combining magnetic responsiveness with UV resistance. The results demonstrate that the composite membrane exhibits outstanding oil–water separation performance, achieving a separation flux of up to 4882.15 L·m−2·h−1 and a separation efficiency of 99.53%. With a water contact angle as high as 155.5° and a rolling angle as low as 4.5°, it displays superhydrophobic properties and excellent anti-fouling characteristics. In addition, this composite membrane demonstrates excellent potential for treating wastewater in corrosive environments, maintaining a hydrophobic angle above 150° across various corrosive conditions.