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<p>A MIL-88B(Fe)@WO<sub>3</sub> composite material was used in this work as a photocatalyst for degrading the synthetic dye rhodamine-B in water. The synthesis of MIL-88B(Fe)@WO<sub>3</sub> was achieved by the solvothermal technique at 150&#xa0;°C for 12&#xa0;h. The introduction of WO<sub>3</sub> into the MIL-88B(Fe) framework has a positive effect on the pore structure of the composite material produced. The BET surface area and total pore volume exhibit a direct proportionality to the magnitude of the applied WO<sub>3</sub> ratio. A reduction in the concentration of rhodamine-B was observed when the degradation of rhodamine-B was carried out in the presence of UV light and catalyst. However, this reduction was not as significant as the degradation of rhodamine-B in the presence of UV light, catalyst, and H<sub>2</sub>O<sub>2</sub>. The present study also provides the process underlying the photodegradation of rhodamine-B dyes. Except for the M<sub>1</sub>W<sub>2</sub> catalyst, nearly all systems have a greater R<sup>2</sup> value for the first-order kinetic equation. The reusability analysis revealed a modest decrease in the performance of the M<sub>1</sub>W<sub>1</sub> composite as the number of cycles increased. However, its efficacy remained largely unaffected even after undergoing a degradation reaction and subjected to several washings.</p>

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MOF-tungsten composite (MIL-88B(Fe)@WO3) for photocatalytic degradation of rhodamine-B under UV light

  • 期刊论文

  • 发表日期：

    2025年6月23日

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  • Ekin Santoso Sim,
  • Rinda Wardhani,
  • Felycia Edi Soetaredjo,
  • Jindrayani Nyoo Putro,
  • Shella Permatasari Santoso,
  • Jenni Lie,
  • Hardy Shuwanto,
  • Nyoman Puspa Asri,
  • Alfin Kurniawan,
  • Suryadi Ismadji

摘要

A MIL-88B(Fe)@WO3 composite material was used in this work as a photocatalyst for degrading the synthetic dye rhodamine-B in water. The synthesis of MIL-88B(Fe)@WO3 was achieved by the solvothermal technique at 150 °C for 12 h. The introduction of WO3 into the MIL-88B(Fe) framework has a positive effect on the pore structure of the composite material produced. The BET surface area and total pore volume exhibit a direct proportionality to the magnitude of the applied WO3 ratio. A reduction in the concentration of rhodamine-B was observed when the degradation of rhodamine-B was carried out in the presence of UV light and catalyst. However, this reduction was not as significant as the degradation of rhodamine-B in the presence of UV light, catalyst, and H2O2. The present study also provides the process underlying the photodegradation of rhodamine-B dyes. Except for the M1W2 catalyst, nearly all systems have a greater R2 value for the first-order kinetic equation. The reusability analysis revealed a modest decrease in the performance of the M1W1 composite as the number of cycles increased. However, its efficacy remained largely unaffected even after undergoing a degradation reaction and subjected to several washings.