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This study presents an innovation in water purification through the creation of a robust, multifunctional membrane via a simple nonsolvent-induced phase separation method. By employing a state-of-the-art interpenetrating polymer networks (IPNs) architecture through in-situ polymerization of polyaniline (PANI) within the polyvinylidene fluoride (PVDF) matrix, the membrane was engineered to possess enhanced properties. The integration of MIL 101-Fe (MOF)-encapsulated Cu-substitute polyoxometalate (POM) resulted in the formation of the POMOF@IPN membrane, showcasing improved characteristics crucial for advanced water treatment. Characterization studies before and after dye removal highlighted significant enhancements in the membrane's morphology and chemical composition. Notably, the introduction of POMOF nanoclusters substantially amplified the membrane's negative charge (−45 eV), facilitating efficient dye rejection via the Donnan exclusion effect. Simultaneously, the IPNs architecture ensured adjustable pore sizes and mechanical resilience, pivotal for precise molecular sieving and enduring transmembrane water pressure. The membrane demonstrated inherent hydrophilicity (~52 degrees contact angle), enhancing antifouling properties and augmenting water flux. Furthermore, the combined effect of POM and MOF catalyzed the degradation of organic dyes, while the membrane exhibited self-cleaning attributes upon exposure to a light source. In conclusion, this study exemplifies the sustainable fabrication of a negatively charged, hydrophilic POMOF@IPN membrane, successfully mitigating the trade-off between high water permeance and rejection performance. Its integrated photocatalytic self-cleaning abilities mark a significant advancement in addressing challenges associated with membrane fouling, reduced water flux, and pollutant removal, thus contributing to the global pursuit of clean and safe water resources.

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Interpenetrating Polymer Network-Based Photocatalytic Self-Cleaning and Antifouling Membrane for Water Remediation

  • 会议论文

  • 发表日期：

    2025年

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  • Soumi Dutta,
  • Suryasarathi Bose

摘要

This study presents an innovation in water purification through the creation of a robust, multifunctional membrane via a simple nonsolvent-induced phase separation method. By employing a state-of-the-art interpenetrating polymer networks (IPNs) architecture through in-situ polymerization of polyaniline (PANI) within the polyvinylidene fluoride (PVDF) matrix, the membrane was engineered to possess enhanced properties. The integration of MIL 101-Fe (MOF)-encapsulated Cu-substitute polyoxometalate (POM) resulted in the formation of the POMOF@IPN membrane, showcasing improved characteristics crucial for advanced water treatment. Characterization studies before and after dye removal highlighted significant enhancements in the membrane's morphology and chemical composition. Notably, the introduction of POMOF nanoclusters substantially amplified the membrane's negative charge (−45 eV), facilitating efficient dye rejection via the Donnan exclusion effect. Simultaneously, the IPNs architecture ensured adjustable pore sizes and mechanical resilience, pivotal for precise molecular sieving and enduring transmembrane water pressure. The membrane demonstrated inherent hydrophilicity (~52 degrees contact angle), enhancing antifouling properties and augmenting water flux. Furthermore, the combined effect of POM and MOF catalyzed the degradation of organic dyes, while the membrane exhibited self-cleaning attributes upon exposure to a light source. In conclusion, this study exemplifies the sustainable fabrication of a negatively charged, hydrophilic POMOF@IPN membrane, successfully mitigating the trade-off between high water permeance and rejection performance. Its integrated photocatalytic self-cleaning abilities mark a significant advancement in addressing challenges associated with membrane fouling, reduced water flux, and pollutant removal, thus contributing to the global pursuit of clean and safe water resources.