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<p>Persistent organic pollutants in wastewater pose severe threats to ecosystems and human health. Contact-electro-catalysis (CEC) has emerged as a promising strategy for pollutant degradation, yet powdered catalysts suffer from limited reactive sites, and generated reactive oxygen species readily form inert H<sub>2</sub>O<sub>2</sub>, limiting redox efficiency. Herein, a flexible TiO<sub>2</sub>/<i>S</i><sub><i>v</i></sub>-ZnIn<sub>2</sub>S<sub>4</sub>/PVDF-HFP nanofibrous membrane is designed to realize a photocatalysis-assisted contact-electro-catalysis (P-CEC) system for efficient wastewater purification. The resulting system enables the continuous in situ decomposition of accumulated H<sub>2</sub>O<sub>2</sub> into reactive oxygen species under light irradiation, while establishing a synergistic multi-field coupling that sustains high redox species flux without the need for external oxidants. In the P-CEC system, the degradation rate of the pollutant reaches 3 times that of the conventional CEC system and 44 times that of the catalyst membrane alone. This work provides a viable strategy for overcoming reactive oxygen species self-quenching and demonstrates a multi-field coupled platform for efficient, energy-sustainable environmental remediation.</p> Graphical Abstract <p></p>

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Nanofiber-Enabled Photocatalysis-Assisted Contact-Electro-Catalysis for H2O2-Mediated Wastewater Engineering

  • 期刊论文

  • 发表日期：

    2026年6月3日

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  • Wei Gong,
  • Ziheng Zhang,
  • Yanfang Bao,
  • Xin Tang,
  • Yunhui Xu,
  • Xinyue Huang,
  • Yuan Rao,
  • Yaogang Li,
  • Hongzhi Wang,
  • Fan Fu

摘要

Persistent organic pollutants in wastewater pose severe threats to ecosystems and human health. Contact-electro-catalysis (CEC) has emerged as a promising strategy for pollutant degradation, yet powdered catalysts suffer from limited reactive sites, and generated reactive oxygen species readily form inert H2O2, limiting redox efficiency. Herein, a flexible TiO2/Sv-ZnIn2S4/PVDF-HFP nanofibrous membrane is designed to realize a photocatalysis-assisted contact-electro-catalysis (P-CEC) system for efficient wastewater purification. The resulting system enables the continuous in situ decomposition of accumulated H2O2 into reactive oxygen species under light irradiation, while establishing a synergistic multi-field coupling that sustains high redox species flux without the need for external oxidants. In the P-CEC system, the degradation rate of the pollutant reaches 3 times that of the conventional CEC system and 44 times that of the catalyst membrane alone. This work provides a viable strategy for overcoming reactive oxygen species self-quenching and demonstrates a multi-field coupled platform for efficient, energy-sustainable environmental remediation.

Graphical Abstract