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<p>This study reveals an innovative combination of polyvinylidene fluoride (PVDF) polymer membrane with nanostructured Zn<sub>0.3</sub>Co<sub>0.7</sub>Fe<sub>2</sub>O<sub>4</sub> magnetic fillers that enables photo- and sonocatalytic degradation of organic dyes. Our findings demonstrate that additional coating of Zn<sub>0.3</sub>Co<sub>0.7</sub>Fe<sub>2</sub>O<sub>4</sub> nanoparticles functionalized&#xa0;with polyethylene glycol (PEG) increases the crystallinity of the PVDF matrix and reduces phase separation, thereby enhancing sonocatalytic degradation of methylene blue (50.4% degradation compared to 25.8% for composite with bare nanoparticles). However, the insulating nature of PEG limits photocatalytic activity. These findings highlight the complex interplay between microstructure and catalytic performance, emphasizing the importance of comprehensive material characterization for composite performance tuning.</p>

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Effects of PEG surface modification of magnetic nanoparticles on sonocatalysis and photocatalysis in PVDF composites

  • 期刊论文

  • 发表日期：

    2025年4月26日

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  • Vitalii Salnikov,
  • Sayara Aga-Tagieva,
  • Valeria Kolesnikova,
  • Petr Ershov,
  • Petr Shvets,
  • Farid Orudzhev,
  • Alexander Omelyanchik,
  • Valeria Rodionova

摘要

This study reveals an innovative combination of polyvinylidene fluoride (PVDF) polymer membrane with nanostructured Zn0.3Co0.7Fe2O4 magnetic fillers that enables photo- and sonocatalytic degradation of organic dyes. Our findings demonstrate that additional coating of Zn0.3Co0.7Fe2O4 nanoparticles functionalized with polyethylene glycol (PEG) increases the crystallinity of the PVDF matrix and reduces phase separation, thereby enhancing sonocatalytic degradation of methylene blue (50.4% degradation compared to 25.8% for composite with bare nanoparticles). However, the insulating nature of PEG limits photocatalytic activity. These findings highlight the complex interplay between microstructure and catalytic performance, emphasizing the importance of comprehensive material characterization for composite performance tuning.