Synthesis and characterization of a new nano molybdenum complex derived from (E)-2-hydroxy-5-(4-nitrophenyl)diazenyl benzaldehyde and Fe3O4@SiO2 and investigation of its catalyst and photophysical properties

In this work, a heterogeneous nanocatalyst was prepared via branch coated of dioxomolybdenum(VI) schiff base complex on the core shell structure Fe3O4@SiO2.The properties and the nature of the surface-fixed complex identified by a set of characterization techniques such as, fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM) and energy dispersive x-ray analysis (EDX) and vibrating sample magnetometry (VSM). The synthesized hybrid material an efficient nanocatalyst for the selective epoxidation of alkenes using tert-butyl hydroperoxide as an oxidant in 1,2-dichloroethane in high yield and selectivity.Epoxidation of alkens in the presence of nanocatalyst was performed more efficiently. We were able the supermagnetic nanocatalyst to separate by using and external magnetic field. And to use the nanocatalyst at least five successive times without significant decrease in conversion. The supermagnetic nanocatalyst has advantages in catalytic activity, selectivity, catalytic reaction and reusability by easy separation.