Abbasi Sepideh, Naimi-Jamal Mohammad Reza, Javanshir Shahrzad, Heydari Akbar
Research Laboratory of Green Organic Synthesis and Polymers, Department of Chemistry, Iran University of Science and Technology (IUST), Tehran, 16846-13114, Iran.
Pharmaceutical and Heterocyclic Compounds Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran, 16846-13114, Iran.
Sci Rep. 2022 Oct 29;12(1):18214. doi: 10.1038/s41598-022-22369-9.
An MIL-100 (Fe)/graphene oxide (GO) hybrid, a fairly-known composite, was made through a simple one-step procedure and played a highlighted role in the photo-induced oxidative functionalization of the benzylic C-H bond. To identify the given binary composite, various techniques were applied: FT-IR, P-XRD, SEM, nitrogen absorption-desorption analysis, TGA, TEM, and UV-Visible DRS spectra. Proportions of GO used within the structure of the prepared composite differently ranged from low to high amount, and the most optimized ratio met at 38.5% of GO as the most efficient catalyst. Additionally, the reaction ran in Glycerol/KCO (2:1) as the optimal solvent. The elemental roles of O and OH were supposed to be the major ones for running a tandem oxidation-Knoevenagel reaction. The heterogeneity and reusability of the catalyst were also examined and confirmed after five successive runs.
一种广为人知的复合材料——MIL-100(Fe)/氧化石墨烯(GO)杂化物，通过简单的一步法制备而成，并在苄基C-H键的光诱导氧化官能团化中发挥了突出作用。为了鉴定这种给定的二元复合材料，应用了各种技术：傅里叶变换红外光谱(FT-IR)、粉末X射线衍射(P-XRD)、扫描电子显微镜(SEM)、氮吸附-脱附分析、热重分析(TGA)、透射电子显微镜(TEM)和紫外-可见漫反射光谱(UV-Visible DRS)。在所制备复合材料的结构中使用的GO比例从低到高各不相同，最优化的比例是38.5%的GO，此时该复合材料是最有效的催化剂。此外，反应在甘油/碳酸钾(Glycerol/KCO，2:1)作为最佳溶剂的条件下进行。O和OH的元素作用被认为是进行串联氧化-Knoevenagel反应的主要因素。在连续五次运行后，还对催化剂的非均相性和可重复使用性进行了检查和确认。
