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CoII immobilized on aminated Fe3O4@Boehmite nanoparticles (Fe3O4@Boehmite-NH2-CoII NPs): a novel, inexpensive and highly efficient heterogeneous magnetic nanocatalyst for Suzuki–Miyaura and Heck–Mizoroki cross‐coupling reactions in green media

Abstract

Herein we report the synthesis of a magnetically separable core-shell-like Fe3O4@Boehmite-NH2-CoII NPs as an environmentally friendly heterogeneous catalyst. The as-prepared nanocatalyst was well characterized by various techniques such as FT-IR, XRD, BET, TEM, FE-SEM, EDX, TGA, H2-TPR, VSM, ICP-OES and elemental analysis and evaluated for the Suzuki–Miyaura and Heck–Mizoroki cross coupling reactions in green solvent (H2O). The results of characterizations revealed the superparamagnetic behavior of the Fe3O4 NPs core encapsulated by a Boehmite NPs shell. Also, it was clearly found that the size of the particles was about 13-54 nm. In comparison to the previous reported catalysts, Fe3O4@Boehmite-NH2-CoII NPs exhibited perfect catalytic efficiency for the Suzuki–Miyaura and Heck–Mizoroki cross coupling reaction under mild conditions without using toxic solvents. The concerted effects between the individual components of catalyst and also its unique egg-like nanostructure caused the high catalytic performance of Fe3O4@Boehmite-NH2-CoII NPs. Also, the introduction of Co significantly lowers the cost of catalyst. More importantly, the longevity of nanocatalyst was studied and found that the magnetic nanocatalyst is stable under the reaction conditions and could be easily reused for at least seven consecutive cycles without a discernible decrease in its catalytic activity or metal leaching.

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Publication details

The article was received on 30 Aug 2017, accepted on 12 Oct 2017 and first published on 12 Oct 2017


Article type: Paper
DOI: 10.1039/C7GC02647A
Citation: Green Chem., 2017, Accepted Manuscript
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    CoII immobilized on aminated Fe3O4@Boehmite nanoparticles (Fe3O4@Boehmite-NH2-CoII NPs): a novel, inexpensive and highly efficient heterogeneous magnetic nanocatalyst for Suzuki–Miyaura and Heck–Mizoroki cross‐coupling reactions in green media

    A. Mohammadinezhad and B. Akhlaghinia, Green Chem., 2017, Accepted Manuscript , DOI: 10.1039/C7GC02647A

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