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<p>Exploring stable and efficient photocatalysts to promote the photo-oxidative degradation of volatile organic compounds (VOCs) is essential for air pollution control. In this study, MIL-101(Fe) modified with silver nanoparticles (Ag NPs) was synthesized via a simple solvothermal method. Under visible light irradiation for 90&#xa0;min, the optimal catalyst MF/Ag-5% composite achieved a styrene conversion rate of 91.8%, with a corresponding kinetic rate constant of 0.022&#xa0;min⁻<sup>1</sup>. Moreover, the catalyst retained its photocatalytic activity over four consecutive cycles. The results indicate that the incorporated Ag NPs effectively extract photogenerated electrons from MIL-101(Fe), thereby promoting efficient charge carrier separation. Additionally, the localized surface plasmon resonance (SPR) effect of Ag NPs extends the light absorption range of MIL-101(Fe), facilitating the generation of reactive species such as hydroxyl radicals (·OH) and superoxide anion radicals (·O₂⁻). This work offers a novel approach for designing highly efficient and stable photocatalysts for air purification applications.</p> Graphical Abstract <p></p>

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Plasmonic Ag Nanoparticles Embedded in Hollow Metal–Organic Frameworks for Highly Efficient Visible-Light Photoredox Catalysis of Malodorous Gaseous Styrene

  • 期刊论文

  • 发表日期：

    2026年3月16日

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  • Congyang Zou,
  • Ruijie Liu,
  • Mingjie Yang,
  • Jie Tian,
  • Yujie Wang

摘要

Exploring stable and efficient photocatalysts to promote the photo-oxidative degradation of volatile organic compounds (VOCs) is essential for air pollution control. In this study, MIL-101(Fe) modified with silver nanoparticles (Ag NPs) was synthesized via a simple solvothermal method. Under visible light irradiation for 90 min, the optimal catalyst MF/Ag-5% composite achieved a styrene conversion rate of 91.8%, with a corresponding kinetic rate constant of 0.022 min⁻1. Moreover, the catalyst retained its photocatalytic activity over four consecutive cycles. The results indicate that the incorporated Ag NPs effectively extract photogenerated electrons from MIL-101(Fe), thereby promoting efficient charge carrier separation. Additionally, the localized surface plasmon resonance (SPR) effect of Ag NPs extends the light absorption range of MIL-101(Fe), facilitating the generation of reactive species such as hydroxyl radicals (·OH) and superoxide anion radicals (·O₂⁻). This work offers a novel approach for designing highly efficient and stable photocatalysts for air purification applications.

Graphical Abstract