In this work, hercynite nanoparticles (AlFe2O4) were prepared using aqueous solution of commercial materials such as NaOH, FeCl2 and Al(NO3)3.9H2O. Then, the surface of AlFe2O4 NPs was encapsulated by silica and further it was modified by 3-choloropropyltrimtoxysilane (CPTMS). Then, a new dendrimer including of cyanuric chloride and tris(hydroxymethyl)amino methane was immobilized on the surface of modified AlFe2O4 NPs. Finally, a complex of copper was fabricated on the dendrimeric functionalized AlFe2O4 NPs (Cu@THAM2@SiO2@hercynite). In continuation, Cu@THAM2@SiO2@hercynite was characterized by several techniques such as WDX, EDS, SEM, TGA, and AAS. In the second part of this work, the catalytic application of Cu@THAM2@SiO2@hercynite was investigated as a practical, recyclable and organic-inorganic hybrid nanocatalyst in the synthesis of tetrazole derivatives. Cu@THAM2@SiO2@hercynite showed a good homoselectivity in the synthesis of tetrazoles. Besides, tetrazole derivatives were isolated in high TOF and TON numbers in the presence of Cu@THAM2@SiO2@hercynite, which reveals high activity of this nanocatalyst. Also, Cu@THAM2@SiO2@hercynite with heterogeneous nature was indicated a notable reusability.
