In this study, metal-organic framework (MOF) MIL-53(Fe) was synthesized. MIL-53(Fe) is capable of activating peroxymonosulfate to achieve highly efficient rhodamine B (RhB) degradation under visible light, and MIL-53(Fe) shows good photocatalytic activity in a wide pH range. The results of the recycling experiments, X-ray diffraction patterns, and Fourier transform infrared spectra of MIL-53(Fe) before and after the catalytic reaction revealed that MIL-53(Fe) is stable. Electron paramagnetic resonance tests indicated that sulfate radicals are the dominant reactive species in RhB degradation. This study provides some guidance in the exploration and utilization of MOFs for environmental remediation.

在这项研究中，合成了金属有机骨架（MOF）MIL-53（Fe）。MIL-53（Fe）能够在可见光下活化过氧单硫酸盐以实现高效的若丹明B（RhB）降解，MIL-53（Fe）在宽pH范围内显示出良好的光催化活性。催化反应前后MIL-53（Fe）的循环实验结果，X射线衍射图和傅里叶变换红外光谱表明，MIL-53（Fe）是稳定的。电子顺磁共振测试表明，硫酸根是RhB降解的主要反应物种。这项研究为探索和利用MOF进行环境修复提供了一些指导。