title: Green synthesis of Ag/Fe(3)O(4) nanocomposite using Euphorbia peplus Linn leaf extract and evaluation of its catalytic activity.
abstract: In this work, the Ag/Fe3O4nanocomposite was prepared by Euphorbia peplus Linn (L.) leaf extract as a suitable reducing source and stabilizing agent. The green synthesized nanocomposite was characterized using X-ray diffraction analysis (XRD), field emission scanning electron microscope (FESEM), transmission electron microscopy (TEM) images, energy-dispersive X-ray spectroscopy (EDS) and FT-IR spectroscopy. TEM analysis of Ag/Fe3O4nanocomposite showed the spherical shape nanoparticles (NPs) with an average size of 5-10nm. The Ag/Fe3O4nanocomposite then was used as a magnetically recoverable catalyst for the [2+3] cycloaddition of arylcyanamides and sodium azide in high yields and short reaction times without formation of hydrazoic acid (HN3). Also it can be easily recovered via applying of external magnetic field and reused several times without significant loss of activity.
authors.affiliation: Department of Chemistry, Faculty of Science, University of Qom, PO Box 37185-359, Qom, Iran.
authors.forename: Mohaddeseh
authors.initials: M
authors.lastname: Sajjadi
authors.affiliation: Department of Chemistry, Faculty of Science, University of Qom, PO Box 37185-359, Qom, Iran; Center of Environmental Researches, University of Qom, Qom, Iran. Electronic address: mahmoudnasr81@gmail.com.
authors.forename: Mahmoud
authors.initials: M
authors.lastname: Nasrollahzadeh
authors.affiliation: Department of Petroleum Geoscience, Faculty of Science, Soran University, PO Box 624, Soran, Kurdistan Regional Government, Iraq.
authors.forename: S
authors.initials: S
authors.lastname: Mohammad Sajadi
mesh_terms: D028481:Euphorbia / Q000737:chemistry*; D055772:Green Chemistry Technology; D053761:Nanocomposites / Q000737:chemistry* / Q000648:ultrastructure; D010936:Plant Extracts / Q000737:chemistry*; D018515:Plant Leaves / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D014961:X-Ray Diffraction
chemical_list: D010936:Plant Extracts
keywords: Ag/Fe(3)O(4); Arylaminotetrazoles; Euphorbia peplus L.; Green synthesis; Heterogeneous catalyst