Karimi Shirin, Gholinejad Mohammad, Khezri Rahimeh, Sansano José M, Nájera Carmen, Yus Miguel
Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS) P. O. Box 45195-1159, Gavazang Zanjan 45137-66731 Iran
Research Center for Basic Sciences & Modern Technologies (RBST), Institute for Advanced Studies in Basic Sciences (IASBS) Zanjan 45137-66731 Iran.
RSC Adv. 2023 Mar 10;13(12):8101-8113. doi: 10.1039/d3ra00283g. eCollection 2023 Mar 8.
Two supported noble metal species, gold and palladium anchored on an ionic liquid-modified Fe-based metal-organic framework (MOF), were successfully synthesized and characterized by FT-IR, XRD, TEM, XPS, SEM, EDX, and elemental mapping. The ionic liquid post-modified MOF was used for anchoring Au or Pd at ppm levels, and the resulting materials were employed as catalysts in the reduction of nitrophenol isomers, dyes, and Sonogashira-Hagihara reactions. Using the Au@Fe-MOF-IL catalyst, reduction of nitrophenol isomers, as well as the reductive degradation of dyes, , methylene blue (MB), methyl orange (MO), and methyl red (MR) were performed efficiently in water. On the other hand, Pd@Fe-MOF-IL was used as an effective catalyst in the Sonogashira-Hagihara coupling reaction of aryl iodides and bromides using very low amounts of Pd. These catalysts were recycled and reused for several runs without deteriorating remarkably in catalytic performance.
成功合成了两种负载型贵金属物种，即锚定在离子液体改性铁基金属有机框架（MOF）上的金和钯，并通过傅里叶变换红外光谱（FT-IR）、X射线衍射（XRD）、透射电子显微镜（TEM）、X射线光电子能谱（XPS）、扫描电子显微镜（SEM）、能量散射X射线光谱（EDX）和元素映射对其进行了表征。离子液体后改性的MOF用于以ppm水平锚定金或钯，所得材料用作还原硝基苯酚异构体、染料以及Sonogashira-Hagihara反应的催化剂。使用Au@Fe-MOF-IL催化剂，在水中高效地进行了硝基苯酚异构体的还原以及染料亚甲基蓝（MB）、甲基橙（MO）和甲基红（MR）的还原降解。另一方面，Pd@Fe-MOF-IL在使用极少量钯的情况下，被用作芳基碘化物和溴化物的Sonogashira-Hagihara偶联反应的有效催化剂。这些催化剂经过多次循环使用，催化性能没有明显下降。
