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<p>The increasing presence of pharmaceutical contaminants in aquatic systems has raised serious environmental concerns, necessitating sustainable and efficient treatment strategies. In this study, a porous NiFe-layered double hydroxide /cellulose acetate (NiFe-LDH/CA) composite film was fabricated and investigated for visible-light-driven photocatalytic degradation of pharmaceutical pollutants. NiFe-LDH was synthesized via a hydrothermal method and uniformly embedded into a biodegradable CA matrix using a simple solution-casting technique. The photocatalytic performance of the free-standing composite film was evaluated using diclofenac and ibuprofen as model drugs. Under visible-light irradiation, the NiFe-LDH/CA film exhibited high degradation efficiencies of 94.9% for diclofenac and 82.19% for ibuprofen, demonstrating effective pollutant removal. The enhanced activity is attributed to the synergistic interaction between the polymer matrix and the NiFe-LDH photocatalyst, which facilitates light absorption and charge separation. This work highlights the potential of biodegradable polymer-LDH composite films as eco-friendly, low-cost, and scalable photocatalysts for pharmaceutical wastewater treatment.</p> Graphical abstract <p></p>

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Sustainable NiFe-LDH/cellulose acetate films for efficient removal of pharmaceutical contaminants

  • 期刊论文

  • 发表日期：

    2026年7月7日

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  • Sakarapani Sarala,
  • Velusamy Sasikala,
  • Palani Karthik,
  • Azhagurajan Mukkannan

摘要

The increasing presence of pharmaceutical contaminants in aquatic systems has raised serious environmental concerns, necessitating sustainable and efficient treatment strategies. In this study, a porous NiFe-layered double hydroxide /cellulose acetate (NiFe-LDH/CA) composite film was fabricated and investigated for visible-light-driven photocatalytic degradation of pharmaceutical pollutants. NiFe-LDH was synthesized via a hydrothermal method and uniformly embedded into a biodegradable CA matrix using a simple solution-casting technique. The photocatalytic performance of the free-standing composite film was evaluated using diclofenac and ibuprofen as model drugs. Under visible-light irradiation, the NiFe-LDH/CA film exhibited high degradation efficiencies of 94.9% for diclofenac and 82.19% for ibuprofen, demonstrating effective pollutant removal. The enhanced activity is attributed to the synergistic interaction between the polymer matrix and the NiFe-LDH photocatalyst, which facilitates light absorption and charge separation. This work highlights the potential of biodegradable polymer-LDH composite films as eco-friendly, low-cost, and scalable photocatalysts for pharmaceutical wastewater treatment.

Graphical abstract