RETRACTED ARTICLE: Green Synthesis of Chitosan Supported Magnetic Palladium Nanoparticles Using Epiphyllum oxypetalum Leaf Extract (Pd-CsEo/Fe3O4 NPs) as Hybrid Nanocatalyst for Suzuki–Miyaura Coupling of Thiophene

A greener approach to synthesize the chitosan (Cs) supported palladium (Pd) magnetic (Fe3O4) nanoparticles (NPs) using Epiphyllum oxypetalum (Eo) leaf extract under ultrasound-assisted extraction was carried out. The reduction of Pd (II) (0) accomplished by phytochemical present in whereas used as core wall material. presences phytochemicals were confirmed liquid chromatography with mass spectrum (LC–MS). synthesized Pd-CsEo/Fe3O4 NPs are characterized fourier-transform infrared spectroscopy, field emission scanning electron microscopy, energy-dispersive X-ray diffraction, and ultraviolet–visible spectroscopy (UV–Vis). Thermogravimetric analysis showed that polyphenols act capping agents over completely degraded at 280 °C. hybrid nanocatalyst Suzuki–Miyaura coupling reaction thiophene. aryl thiophene substituted compounds proton nuclear spectra (1H NMR). catalyst recovered external magnet reused for five cycles C–C without any significant loss catalytic activity.Graphical Abstract