Jump to main content
Jump to site search

Issue 16, 2018
Previous Article Next Article

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

Author affiliations

Abstract

Herein, we describe the fabrication of a magnetically retrievable nanocomposite adorned with highly active Pd nanoparticles (NPs) (MRN-Pd), which is useful for the efficient reduction of nitroaromatics in aqueous solution. The polymerization of pyrrole as the monomer in the presence of Pd salt and iron nanopowder generates Pd nanocatalysts and localizes the resultant Pd NPs discretely and uniformly on the polypyrrole framework comprising strongly magnetic MRN-Pd catalyst without the need for any reducing agent. The nitrogen-containing polymer enhances the interaction between the decorated Pd nanocatalysts and the polymer scaffold, endowing stability to the Pd NPs and maintaining their monodispersity. This prevents the possible aggregation of the MRN-Pd catalyst and promotes its reactivity for fast reduction processes. The unique features exhibited by the MRN-Pd catalyst result in excellent catalytic activity for the expeditious reduction of nitroaromatics under green reaction conditions at room temperature. Furthermore, the pronounced magnetic characteristics of the MRN-Pd catalyst allow its convenient separation and recycling from the reaction mixture. In addition, the MRN-Pd catalyst can be completely separated and recycled using a small magnet and reused for seven consecutive cycles of high-yield reduction of nitrobenzene (99–95%) in water, thus affording a highly retrievable and sustainable magnetic nanocomposite catalyst suitable for environmentally friendly processes. The MRN-Pd catalyst also presents high catalytic activity in other typical catalytic transformations requiring Pd nanocatalysts, such as the Suzuki and Heck cross-coupling reactions.

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

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., 2018,20, 3809-3817
  •   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. P. Hong, K. Zhang, J. M. Suh, K. S. Choi, R. S. Varma and H. W. Jang, Green Chem., 2018, 20, 3809
    DOI: 10.1039/C8GC01240G

Search articles by author

Spotlight

Advertisements