Abstract A magnetic photocatalyst Fe3O4@MIL-53(Fe) was successfully obtained from the calcination treatment of pristine MIL-53(Fe) to degrade ibuprofen (IBP) under visible light. The results suggested that Fe3O4 and MIL-53(Fe) co-existed after the calcination of MIL-53(Fe) at 400 ℃ (CM53−400) and pearl-like Fe3O4 nanoparticle intimately combined with MIL-53(Fe) in CM53−400. Fe3O4@MIL-53(Fe) composites exhibited superior photocatalytic performance due to the unique structure and electron transfer between Fe3O4 and MIL-53(Fe). CM53−400 processed the best catalytic ability for IBP degradation, achieving 99 % removal of IBP in the presence of H2O2 within 60 min. The improved photocatalytic activity of CM53−400 may originate from the enhanced photoexcited electron-hole pairs separation. The active species, h+, OH, e− and O 2−, played important roles in the photo-degradation processes. In addition, due to the stable activity of CM53−400 toward IBP decomposition and the strong magnetism of CM53−400 composite, CM53−400 photocatalysts bring new insights into the practical application for removing the organic contaminants from water.

中文翻译：

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源自 MIL-53(Fe) 的磁性 Fe3O4@MIL-53(Fe) 纳米复合材料用于在可见光照射下光催化降解布洛芬

摘要 通过在可见光下煅烧原始MIL-53(Fe)降解布洛芬(IBP)，成功获得磁性光催化剂Fe3O4@MIL-53(Fe)。结果表明，MIL-53(Fe)在400℃(CM53-400)煅烧后Fe3O4和MIL-53(Fe)共存，CM53中珍珠状Fe3O4纳米颗粒与MIL-53(Fe)紧密结合−400。Fe3O4@MIL-53(Fe)复合材料由于Fe3O4和MIL-53(Fe)之间独特的结构和电子转移而表现出优异的光催化性能。CM53-400 处理 IBP 降解的最佳催化能力，在 H2O2 存在下 60 分钟内实现了 99% 的 IBP 去除。CM53-400 提高的光催化活性可能源于增强的光激发电子-空穴对分离。活性物质 h+、OH、e- 和 O 2-，在光降解过程中发挥了重要作用。此外，由于CM53-400对IBP分解的稳定活性和CM53-400复合材料的强磁性，CM53-400光催化剂为去除水中有机污染物的实际应用带来了新的见解。