Akbar Rostami-Vartooni - Department of Chemistry, Faculty of Science, University of Qom, Qom, Iran
Abolfazl Moradi-Saadatmand - Department of Chemistry, Faculty of Science, University of Qom, Qom, Iran

Nowadays, zeolites such as HZSM-5 and natrolite have interested a considerable attention as beneficial supports and catalysts because of their high surface area, catalytic activity, thermal stability and unique cellular structural with uniform pores and channels [1]. Also, magnetic Fe3O4 nanoparticles and its nanocomposits have recently been gained extensive interests because of their wide use as efficient catalysts in many chemical reactions and their convenient separation from the reaction media by an easy magnetic separation [2]. Hence, combination of zeolite and Fe3O4 can be used for the preparation of efficient composite as a novel and unique support.In this work, HZSM-5 and its Ag or Fe3O4 nanocomposites were synthesized by simple and eco-friendly method using leaf extract of J. regia and characterized by FT-IR, XRD, FE-SEM, EDS, BET and VSM. Reduction of Ag+ ions and stabilization of resulted Ag nanoparticles on the surface of support are the role of plant extract. According to the FE-SEM images of nanocomposites, the average size of nanoparticles on the support surfaces was below 70 nm. The prepared nanocomposites as active catalysts were used in the catalytic reduction of organic dyes at room temperature.