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<p>Using a straightforward water bath heating technique, ZnFe<sub>2</sub>O<sub>4</sub> photocatalyst was combined with perylene diimide (PDI). The photocatalytic oxidation of ciprofloxacin (CIP) under visible light was examined. The research revealed that the ZnFe<sub>2</sub>O<sub>4</sub>/PDI composite had a superior visible light degradation rate for CIP compared to self-assembled PDI and ZnFe<sub>2</sub>O<sub>4</sub>. This study highlights that the unique 1D nanorod morphology of PDI, combined with the quantum-sized ZnFe<sub>2</sub>O<sub>4</sub> nanoparticles, synergistically facilitates efficient carrier migration to the surface, thereby boosting photocatalytic performance. The formation of a Z-scheme heterojunction, driven by well-matched energy band alignment between PDI and ZnFe<sub>2</sub>O<sub>4</sub>, creates an interfacial electric field that promotes directional charge separation while preserving strong redox potentials. Enhanced interfacial interactions in the self-assembled 30% ZnFe<sub>2</sub>O<sub>4</sub>/PDI composite result in exceptional CIP degradation efficiency of 86.80% under visible light, representing 2.48-fold and 1.81-fold enhancements over pristine PDI (35.10%) and ZnFe<sub>2</sub>O<sub>4</sub> (48.01%), respectively. This work pioneers a magnetic recoverable Z-scheme photocatalyst system through rational organic–inorganic hybridization, offering a sustainable platform for advanced environmental remediation technologies.</p>

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Synthesis and properties of inorganic organic ZnFe2O4/PDI composite photocatalyst with high photocatalytic activity and magnetic separation ability

  • 期刊论文

  • 发表日期：

    2025年3月28日

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  • Wei Ma,
  • Na Wang,
  • Yu Jin

摘要

Using a straightforward water bath heating technique, ZnFe2O4 photocatalyst was combined with perylene diimide (PDI). The photocatalytic oxidation of ciprofloxacin (CIP) under visible light was examined. The research revealed that the ZnFe2O4/PDI composite had a superior visible light degradation rate for CIP compared to self-assembled PDI and ZnFe2O4. This study highlights that the unique 1D nanorod morphology of PDI, combined with the quantum-sized ZnFe2O4 nanoparticles, synergistically facilitates efficient carrier migration to the surface, thereby boosting photocatalytic performance. The formation of a Z-scheme heterojunction, driven by well-matched energy band alignment between PDI and ZnFe2O4, creates an interfacial electric field that promotes directional charge separation while preserving strong redox potentials. Enhanced interfacial interactions in the self-assembled 30% ZnFe2O4/PDI composite result in exceptional CIP degradation efficiency of 86.80% under visible light, representing 2.48-fold and 1.81-fold enhancements over pristine PDI (35.10%) and ZnFe2O4 (48.01%), respectively. This work pioneers a magnetic recoverable Z-scheme photocatalyst system through rational organic–inorganic hybridization, offering a sustainable platform for advanced environmental remediation technologies.