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Immobilization of Au nanoparticles on poly(glycidyl methacrylate)‐functionalized magnetic nanoparticles for enhanced catalytic application in the reduction of nitroarenes and Suzuki reaction
Author(s) -
Pourjavadi Ali,
Kohestanian Mohammad,
Keshavarzi Nahid
Publication year - 2020
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/aoc.5828
Subject(s) - glycidyl methacrylate , chemistry , thermogravimetric analysis , catalysis , nanoparticle , magnetic nanoparticles , nanocomposite , fourier transform infrared spectroscopy , polymer chemistry , gel permeation chromatography , polymerization , nuclear chemistry , chemical engineering , organic chemistry , nanotechnology , materials science , polymer , engineering
We report a novel strategy for the synthesis of magnetic nanocomposite for highly efficient catalysis. Poly(glycidyl methacrylate) (PGMA) chains were grafted to the surface of magnetic nanoparticles (MNPs) through surface‐initiated reversible addition‐fragmentation chain transfer polymerization. Then, the oxirane rings in the PGMA chains were opened with 2,6‐diamino pyridine (DAP) molecules as ligands to prepare the solid support. Finally, this magnetic nanocomposite was used for the immobilization of gold nanoparticles. Fourier‐transform infrared spectroscopy, X‐ray diffraction, thermogravimetric analysis, transmission electron microscopy, scanning electron microscopy, gel permeation chromatography, vibrating sample magnetometry, and atomic absorption spectroscopy were used for characterization of the catalyst. The loading of gold nanoparticles on the solid support was 0.52 mmol/g. The catalytic activity of the prepared catalyst (MNP@PGMA@DAP@Au) was evaluated for the reduction of nitro compounds and C–C coupling reaction in water. The catalyst can be easily recovered and reused seven times without significant loss of catalytic activity.