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<p>The present study investigates the photocatalytic degradation of propyl paraben (propyl para-hydroxybenzoate, PrP) using Fe–MgO/SBA-15 photocatalyst. The catalyst was successfully synthesized via ultrasonic-assisted sol–gel method and characterized using X-ray diffraction (XRD), Brunauer–Emmett–Teller (BET) analysis, fourier transform infrared spectroscopy (FTIR), and UV–Vis diffuse reflectance spectroscopy prior to its application. Its photocatalytic performance was evaluated for the removal of PrP under UV-light irradiation. The influence of key operational parameters, including pH, catalyst dosage, and initial pollutant concentration, was systematically examined. The results demonstrated that the Fe–MgO/SBA-15 heterojunction achieved (100%) degradation of PrP within 30&#xa0;min of irradiation at pH 3. Additionally, 70% of chemical oxygen demand (COD) and 67.5% of total organic carbon (TOC) were removed, indicating significant mineralization of the pollutant.</p> Graphical abstract <p></p>

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Propylparaben removal using Fe-MgO/SBA-15 photocatalyst

  • 期刊论文

  • 发表日期：

    2026年4月9日

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  • Souad Nachet,
  • Djalila Guettaia,
  • Chahrazed Daoudi,
  • Amel Boudjemaa,
  • Karima Saidi-Bendahou,
  • Belkacem Benguella,
  • Khaldoun Bachari,
  • Chewki Ziani Cherif

摘要

The present study investigates the photocatalytic degradation of propyl paraben (propyl para-hydroxybenzoate, PrP) using Fe–MgO/SBA-15 photocatalyst. The catalyst was successfully synthesized via ultrasonic-assisted sol–gel method and characterized using X-ray diffraction (XRD), Brunauer–Emmett–Teller (BET) analysis, fourier transform infrared spectroscopy (FTIR), and UV–Vis diffuse reflectance spectroscopy prior to its application. Its photocatalytic performance was evaluated for the removal of PrP under UV-light irradiation. The influence of key operational parameters, including pH, catalyst dosage, and initial pollutant concentration, was systematically examined. The results demonstrated that the Fe–MgO/SBA-15 heterojunction achieved (100%) degradation of PrP within 30 min of irradiation at pH 3. Additionally, 70% of chemical oxygen demand (COD) and 67.5% of total organic carbon (TOC) were removed, indicating significant mineralization of the pollutant.

Graphical abstract