Magnetically modified Schiff base-Pd complex: An efficient heterogeneous catalyst for Suzuki-Miyaura cross-coupling and dyes degradation reaction

This study depicts the novel synthesis of sustainable, cost-effective, and environmentally friendly Schiff base-Pd nanomagnetic heterogeneous catalyst (MNP-AF-Pd) decorated on superparamagnetic Fe3O4@SiO2 core-shell magnetic nanoparticles. The synthesized MNP-AF-Pd catalyst were characterized by thermogravimetric analysis (TGA), Fourier transform infrared (FT-IR), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), inductively coupled plasma-optical emission spectrometry (ICP-OES) analysis, Brunauer-Emmett-Teller (BET), energy dispersive X-ray analysis (EDX), vibrating-sample magnetometer (VSM), field-emission scanning electron microscopy (FE-SEM), and high-resolution transmission electron microscopy (HR-TEM). The synthesized MNP-AF-Pd catalyst was shown to be an effective catalyst for Suzuki-Miyaura cross-coupling reaction of several aryl boronic acid and degradation of hazardous organic dyes, particularly rhodamine B and methylene blue under mild reaction conditions. The catalyst is simply retrieved, recovered, and repeatedly utilized for several cycles without appreciably diminishing catalytic activity.