期刊
MATERIALS RESEARCH BULLETIN
卷 132, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.materresbull.2020.111000
关键词
MIL-53(Fe); Ibuprofen; Calcination treatment; Photocatalysis; Magnetic catalyst
资金
- National Natural Science Foundation of China [41673093, 41773128]
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 degrees C (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)-O-center dot, e(-) and O(2)(center dot-)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.
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