Jump to main content
Jump to site search

Issue 35, 2015
Previous Article Next Article

Palladium nanoparticles embedded on thiourea-modified chitosan: a green and sustainable heterogeneous catalyst for the Suzuki reaction in water

Author affiliations

Abstract

Palladium nanoparticles (PdNPs) embedded on thiourea modified chitosan (TMC) are prepared in spherical and cubical shapes by intercalating palladium(II) acetate in TMC, a natural bio-polymer, and a subsequent reduction using ellagic acid (EA) as a natural and green reducing source in water. The formation of palladium nanoparticles in water is monitored by UV-Vis, spectroscopy and the PdNPs/TMC solid matrix are characterized by FT-IR, powder XRD and HR-TEM. The amount of palladium entrapped on TMC is measured by ICP-OES analysis, and it is found to be 0.00103 mol%. The synthesised PdNPs/TMC reported for the first time, were employed as heterogeneous catalysts for Suzuki cross-coupling reactions of aryl iodide/bromide with various substituted aryl boronic acids in water and showed high catalytic activity under mild reaction conditions. Easy separation, the absence of an inert atmosphere and good to excellent yields are the other significant outcomes of this protocol. In addition, the reactions also work well with various heterocyclic boronic acids. Also the catalyst can be easily recovered and reused for at least five runs without loss in its activity.

Graphical abstract: Palladium nanoparticles embedded on thiourea-modified chitosan: a green and sustainable heterogeneous catalyst for the Suzuki reaction in water

Back to tab navigation

Supplementary files

Publication details

The article was received on 12 Nov 2014, accepted on 09 Mar 2015 and first published on 09 Mar 2015


Article type: Paper
DOI: 10.1039/C4RA14411B
Author version available: Download Author version (PDF)
Citation: RSC Adv., 2015,5, 27533-27539
  •   Request permissions

    Palladium nanoparticles embedded on thiourea-modified chitosan: a green and sustainable heterogeneous catalyst for the Suzuki reaction in water

    A. Affrose, P. Suresh, I. A. Azath and K. Pitchumani, RSC Adv., 2015, 5, 27533
    DOI: 10.1039/C4RA14411B

Search articles by author

Spotlight

Advertisements