In this work, hercynite magnetic nanoparticles (AlFe2O4 MNPs) were synthesized from commercial available materials such as FeCl2 and Al(NO3)3.9H2O. The surface of AlFe2O4 MNPs was encapsulated using silica and further it was modified by 3-aminooropropyltrimtoxysilane (APTMS). Then, the modified AlFe2O4 MNPs was functionalized by tris(hydroxymethyl)amino methane (THAM). Finally, a new copper complex of THAM was stabilized on the surface of functionalized AlFe2O4 MNPs (Cu-THAM@SiO2@AlFe2O4) as a novel, magnetically recoverable, practical and selective nanocatalyst. Cu-THAM@SiO2@AlFe2O4 nanocatalyst was characterized by atomic absorption spectroscopy (AAS), wavelength dispersive X-ray spectroscopy (WDX), energy dispersive X-ray spectroscopy (EDS), scanning electron microscope (SEM), and thermogravimetric analysis (TGA) techniques. Cu-THAM@SiO2@AlFe2O4 nanocatalyst was indicated a high efficiency, good selectivity and excellent reusability in the synthesis of tetrazole derivatives through [3 + 2] cycloaddition of sodium azide (NaN3) with organic nitrile derivatives.
