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Magnetic Nanocomposite of Cross‐Linked Melamine Groups Decorated with Large Amounts of Gold NPs: Reduction of Nitro Compounds and Suzuki–Miyaura Coupling Reactions in Aqueous Media
Author(s) -
Pourjavadi Porf. Ali,
Keshavarzi Nahid,
Moghaddam Firouz Matloubi,
Hosseini Seyed Hassan
Publication year - 2018
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201702798
Subject(s) - thermogravimetric analysis , catalysis , nanocomposite , melamine , fourier transform infrared spectroscopy , materials science , scanning electron microscope , transmission electron microscopy , nuclear chemistry , coupling reaction , atomic absorption spectroscopy , aqueous solution , magnetic nanoparticles , colloidal gold , nanoparticle , spectroscopy , chemical engineering , chemistry , organic chemistry , nanotechnology , composite material , physics , quantum mechanics , engineering
A magnetic nanocomposite was prepared based on magnetic Fe 3 O 4 nanoparticles entrapped into a cross‐linked nitrogen rich polymer which has high loading capacity for immobilization of gold nanoparticles. The synthesized catalyst was characterized using various methods including Atomic absorption spectroscopy (AAS), Transmission electron microscopy (TEM), Fourier‐transform infrared spectroscopy ( FT‐IR), Energy‐dispersive X‐ray spectroscopy (EDX), Thermogravimetric analysis (TGA), scanning electron microscope (SEM), Brunauer–Emmett–Teller (BET), VSM and X‐ray diffraction (XRD) techniques. The catalyst was proven to be highly efficient for reduction of nitroarenes as well as Suzuki–Miyaura coupling reaction. The reduction of nitroarenes and Suzuki–Miyaura coupling reaction were performed in water medium and excellent yields of the products were achieved. The catalyst was easily recovered and recycled several times without any significant loss of catalytic activity.