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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

Pourjavadi, A ; Sharif University of Technology | 2020

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  1. Type of Document: Article
  2. DOI: 10.1002/aoc.5828
  3. Publisher: John Wiley and Sons Ltd , 2020
  4. Abstract:
  5. 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. © 2020 John Wiley & Sons, Ltd
  6. Keywords:
  7. Au nanoparticles ; heterogeneous catalysts ; RAFT polymerization ; reduction ; Suzuki reaction ; Absorption spectroscopy ; Acrylic monomers ; Catalyst activity ; Chemical reactions ; Fiber optic sensors ; Fourier transform infrared spectroscopy ; Gel permeation chromatography ; High resolution transmission electron microscopy ; Magnetic nanoparticles ; Magnetism ; Metal nanoparticles ; Nanocomposites ; Scanning electron microscopy ; Thermogravimetric analysis ; Atomic absorption spectroscopy ; Magnetic nanocomposites ; Magnetic nanoparti cles (MNPs) ; Poly(glycidyl methacrylate) ; Reduction of nitro compounds ; Reduction of nitroarenes ; Reversible addition-fragmentation chain transfer polymerization ; Vibrating sample magnetometry ; Gold nanoparticles
  8. Source: Applied Organometallic Chemistry ; Volume 34, Issue 10 , 2020
  9. URL: https://onlinelibrary.wiley.com/doi/abs/10.1002/aoc.5828