A new copper-supported zinc ferrite as a heterogeneous magnetic nanocatalyst for the synthesis of bis(pyrazolyl)methanes and oxidation of sulfides
Arash Ghorbani‐Choghamarani, Hamid Aghavandi, Seyed Mahdi Talebi
Abstract
Abstract In this paper, we report the synthesis of ZnFe 2 O 4 @SiO 2 @APTES@DHBS-Cu as a novel magnetic nanocatalyst, in a mild and green environment. The structure of the described magnetic compound was characterized by different physicochemical techniques including XRD, EDS, AAS, SEM, FT-IR, X-ray elemental mapping, TGA, and VSM analyses. The prepared magnetic nanoparticles exhibit excellent catalytic activity in synthesizing bis (pyrazolyl)methanes and oxidation of sulfide derivatives under green conditions. The heterogeneous nature of the catalyst was confirmed via the hot filtration experiment. Further, ZnFe 2 O 4 @SiO 2 @APTES@DHBS-Cu showed high efficiency and reusability that could be reused for at least five consecutive runs.