Cu Nanoparticles Anchored over Chitosan-Alginate Modified Magnetic Nanoparticles to Explore the C-N Heterocoupling Reactions

Abstract

Herein, we report the synthesis of copper nanoparticles (NP) at mild conditions using dual biopolymer, chitosan-alginate, modified magnetic nanoparticles as a protecting/stabilizing agent and sodium borohydrideas a reducing agent. The obtained nanocomposite (Fe₃O₄/Chitosan-Alginate/Cu NPs) were physico-chemically assessed over FT-IR, FE-SEM, EDX, elemental mapping, ICP-OES, TEM, VSM and XRD studies. The as-synthesized Fe₃O₄/Chitosan-Alginate/Cu NPs were explored as an efficient heterogeneous nanocatalyst in the aryl and heteroaryl C–N cross-coupling reactions with considerably high yields under mild conditions. The catalyst was isolated and reused for nine times with reproducible catalytic activity.

Keywords:

• Magnetic nanocomposite
• Chitosan-Alginate
• Cu nanoparticles
• C-N coupling
• reusable

Acknowledgments

The authors extend their appreciation to the Researchers Supporting Project number (RSP-2021/201), King Saud University, Riyadh, Saudi Arabia.

Disclosure statement

No potential conflict of interest was reported by the author(s).