Jump to main content
Jump to site search


Magnetically retrievable nanocomposite adorned with Pd nanocatalysts: efficient reduction of nitroaromatics in aqueous media

Abstract

The fabrication of magnetically retrievable nanocomposite adorned with highly active Pd nanoparticles (NPs) (MRN–Pd) is described that is useful for the efficient reduction of nitroaromatics in aqueous solution. The polymerization of pyrrole as a monomer in presence of Pd salt and iron nanopowders generates Pd nanocatalysts and localizes the ensuing Pd NPs discretely and uniformly on the polypyrrole framework comprising strongly magnetic MRN–Pd catalysts with no requirement for any reducing agent. The nitrogen–containing polymer enhances the interaction between the decorated Pd nanocatalysts and the polymer scaffold, empowering the stability and maintenance of the nanocatalysts monodispersity which prevents possible aggregation and promotes their reactivity for the fast reduction processes. The inimitable features uncovered by the MRN–Pd catalysts display excellent catalytic activity for the expeditious reduction of nitroaromatics under greener reaction conditions at room temperature. Furthermore, the pronounced magnetic characteristic of the MRN–Pd catalysts bestows a convenient method for the separation and recycling the active Pd nanocatalysts from the reaction mixture; the nanocatalysts could be entirely separated and recycled using a small magnet, and be reused for seven consecutive cycles of the high yield reduction of nitrobenzene (99~95 %) in water thus affording a highly retrievable and sustainable magnetic nanocomposite catalysts suitable for environmentally friendly processes. The MRN–Pd catalysts also present high catalytic activity in other typical catalytic transformations requiring Pd nanocatalysts such as Suzuki and Heck cross–coupling reactions.

Back to tab navigation

Supplementary files

Publication details

The article was received on 19 Apr 2018, accepted on 09 Jul 2018 and first published on 09 Jul 2018


Article type: Paper
DOI: 10.1039/C8GC01240G
Citation: Green Chem., 2018, Accepted Manuscript
  •   Request permissions

    Magnetically retrievable nanocomposite adorned with Pd nanocatalysts: efficient reduction of nitroaromatics in aqueous media

    M. Shokouhimehr, K. Hong, T. H. Lee, C. W. Moon, S. Hong, K. Zhang, J. M. Suh, K. S. Choi, R. S. Varma and H. W. Jang, Green Chem., 2018, Accepted Manuscript , DOI: 10.1039/C8GC01240G

Search articles by author

Spotlight

Advertisements