Magnetically recyclable Schiff-based palladium nanocatalyst [Fe3O4@SiNSB-Pd] and its catalytic applications in Heck reaction: Magnetically recyclable Schiff-based palladium nanocatalyst

Hamid Hafizi, Md Lutfor Rahman, Mohd Sani Sarjadi, Mohammed Salim Akhter, Maurice N. Collins, Emmet J. O'Reilly, Gavin M. Walker, Shaheen M. Sarkar

Research output: Contribution to journalArticlepeer-review

Abstract

A magnetically separable palladium nanocatalyst has been synthesized through the immobilization of palladium onto 3-aminopropylphenanthroline Schiff based functionalized silica coated superparamagnetic Fe3O4 nanoparticles. The nanocatalyst (Fe3O4@SiNSB-Pd) was fully characterized using several spectroscopic techniques, such as FT-IR, HR-SEM, TEM, XRD, ICP, and XPS. The microscopic image of Fe3O4 showed spherical shape morphology and had an average size of 150 nm. The Pd-nanoparticles exhibited an average size 3.5 ± 0.6 nm. The successful functionalization of Fe3O4@SiNSB-Pd was identified by FT-IR spectroscopy and the appearance of palladium species in Fe3O4@SiNSB-Pd was confirmed by XRD analysis. While XPS has been utilized for the determination of the chemical oxidation state of palladium species in Fe3O4@SiNSB-Pd. Several activated and deactivated arene halides and olefines were employed for Mizoroki-Heck cross-coupling reactions in the presence of Fe3O4@SiNSB-Pd, each of which produced the respective cross-coupling products with excellent yields. The Fe3O4@SiNSB-Pd shows good reactivity and reusability for up to seven consecutive cycles.

Original languageEnglish
Article number103914
Pages (from-to)-
JournalArabian Journal of Chemistry
Volume15
Issue number7
DOIs
Publication statusPublished - Jul 2022

Keywords

  • Heck reaction
  • Magnetic nanoparticles
  • Palladium
  • Phenanthroline
  • Schiff-base
  • Silica coated

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