Abstract

A magnetic core-shell nanoparticle catalyst (MCNPs) (Fe₃O₄@rGO@ZnO-HPA) (HPA = H₃PW₁₂O₄₀) has been used as a reusable solid catalyst for the one-pot, four-component microwave-assisted under solvent-free conditions synthesis of benzo[f]furo[2,3-h] quinoxaline-5,6-dicarbonitrile derivatives by the reaction of 2-hydroxynaphthalene-1,4-dione, diaminomaleonitrile, and phenacyl bromides. Mild reaction conditions and excellent yields are the main advantages of this method. The structural, morphological, magnetically, optical and chemical bonding studies; X-ray diffraction, FESEM, TEM, VSM, UV-Vis, and FTIR measurements were carried out. the results of the above analyses demonstrated core-shell the structure is formed. As an application for the synthesized structure, the degradation of methylene blue as a heavy-mass organic pollutions were measured.

摘要

磁性核壳纳米粒子催化剂 (MCNPs) (Fe ₃ O ₄ @rGO@ZnO-HPA) (HPA = H ₃ PW ₁₂ O ₄₀ ) 已被用作一锅四组分微波的可重复使用的固体催化剂-无溶剂条件下辅助合成benzo[ f ] furo [2,3- h] quinoxaline-5,6-dicarbonitrile 衍生物通过 2-hydroxynaphthalene-1,4-dione、diaminomaleonitrile 和 phenacyl bromides 的反应。温和的反应条件和优异的产率是该方法的主要优点。结构、形态、磁性、光学和化学键合研究；进行了 X 射线衍射、FESEM、TEM、VSM、UV-Vis 和 FTIR 测量。上述分析结果证明了核-壳结构的形成。作为合成结构的应用，测量了亚甲蓝作为重质有机污染物的降解。