Facile fabrication of highly active magnetic aminoclay supported palladium nanoparticles for the room temperature catalytic reduction of nitrophenol and nitroanilines

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Abstract

Magnetically recyclable nanocatalysts with excellent performance are urgent need in heterogeneous catalysis, due to their magnetic nature, which allows for convenient and efficient separation with the help of an external magnetic field. In this research, we developed a simple and rapid method to fabricate a magnetic aminoclay (AC) based an AC@Fe3 O4 @Pd nanocatalyst by depositing palladium nanoparticles (Pd NPs) on the surface of the magnetic aminoclay nanocomposite. The microstructure and the magnetic properties of as-prepared AC@Fe3 O4 @Pd were tested using transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD), and vibrating sample magnetometry (VSM) analyses. The resultant AC@Fe3 O4 @Pd nanocatalyst with the magnetic Fe-based inner shell, catalytically activate the outer noble metal shell, which when combined with ultrafine Pd NPs, synergistically enhanced the catalytic activity and recyclability in organocatalysis. As the aminoclay displayed good water dispersibility, the nanocatalyst indicated satisfactory catalytic performance in the reaction of reducing nitrophenol and nitroanilines to the corresponding aminobenzene derivatives. Meanwhile, the AC@Fe3 O4 @Pd nanocatalyst exhibited excellent reusability, while still maintaining good activity after several catalytic cycles.

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Jia, L., Zhang, W., Xu, J., Cao, J., Xu, Z., & Wang, Y. (2018). Facile fabrication of highly active magnetic aminoclay supported palladium nanoparticles for the room temperature catalytic reduction of nitrophenol and nitroanilines. Nanomaterials, 8(6). https://doi.org/10.3390/nano8060409

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