Magnetic Fe3O4@Au Nanoparticles as Environmentally Friendly and Recyclable Nanocatalyst for the Synthesis of Coumarin Derivatives
نویسندگان
1 Department of Chemistry, QaS.C., Islamic Azad University, Qaemshahr, Iran
2 Department of Chemistry, QaS.C., Islamic Azad University, Qaemshahr, Iran
3 Department of Chemistry, QaS.C., Islamic Azad University, Qaemshahr, Iran
doi
10.48309/chemm.2025.513908.1922چکیده
Combining iron oxide nanoparticles (Fe3O4 NPs) and gold nanoparticles (Au NPs) in one nanostructure is a promising technique for various applications. Fe3O4 NPs possess unique superparamagnetic attributes that enable their use across various areas, and Au NPs are distinctive in biomaterials due to their oxidation resistance and chemical stability. In this work, magnetic Fe3O4@Au nanocatalyst has been synthesized using a facile method. Subsequently, the evidence for the successful preparation of the Fe3O4@Au was carried out using different methods including FT-IR, EDS, TEM, XRD, and ICP-AES. The gold loading percentage (3.41 wt.%) was determined by ICP-AES. The prepared catalyst was found to be an efficient environmentally friendly catalyst for preparing coumarins in excellent yields by the one-pot Pechmann condensation at 130 oC under solvent-free conditions. This procedure for preparation of coumarin derivatives was very simple and inexpensive. The advantages of the prepared catalyst include simplicity of separation by an external magnet and recyclability of up to six times without any reduction in the catalytic activity.
