Trisaminomethane–cobalt complex supported on Fe3O4 magnetic nanoparticles as an efficient recoverable nanocatalyst for oxidation of sulfides and C–S coupling reactions

In this work, trisaminomethane–cobalt complex immobilized onto the surface of Fe3O4 magnetic nanoparticles was successfully prepared via a simple and inexpensive procedure. The prepared nanocatalyst was considered a robust and clean nanoreactor catalyst for the oxidation and synthesis of sulfides under green conditions. This ecofriendly heterogeneous catalyst was characterized by Fourier transform infrared spectroscopy, X‐ray diffractometry, energy‐dispersive X‐ray spectroscopy, inductively coupled plasma‐atomic emission spectroscopy, thermogravimetric analysis, vibrating sample magnetometry, X‐ray mapping, scanning electron microscopy, and transmission electron microscopy techniques. Use of green medium, easy separation and workup, excellent reusability of the nanocatalyst, and short reaction time are some outstanding advantages of this method. Trisaminomethane–cobalt complex supported on Fe3O4MNPs (Fe3O4@PTMS‐Tris‐Co)prepared and its structure characterized by different techniques such as FT‐IR, XRD, EDS, ICP, TGA, VSM, SEM, TEM and BET. Fe3O4@PTMS‐Tris‐Co has been applied as an efficient catalyst for the selective synthesis and oxidation of sulfides.