Palladium nanoparticles supported on magnetic organic-silica hybrid nanoparticles

Suheir Omar, Raed Abu-Reziq*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

38 Scopus citations

Abstract

A method for supporting palladium nanoparticles on magnetically separable organosilica nanoparticles functionalized with ionic liquid groups is described. The system was prepared by sol-gel condensation of two silica precursors: tetraethyl orthosilicate (TEOS) and bis-silylated ionic liquid monomer, on hydrophobic magnetic nanoparticles modified with oleate groups. The support of palladium nanoparticles on the magnetic organo-silica hybrid nanoparticles was achieved by adsorbing palladium salts (Na2PdCl4) on their surface via ion exchange with the ionic liquid groups, followed by reduction with sodium borohydride. The resulted system was applied in three different catalytic transformations: carbonylation of iodoarenes and Heck and Suzuki coupling reactions. The catalyst demonstrated high catalytic activity and was easily separated from the reaction mixture by applying an external magnetic field. The catalyst was recycled over five times without showing a significant loss in its activity.

Original languageAmerican English
Pages (from-to)30045-30056
Number of pages12
JournalJournal of Physical Chemistry C
Volume118
Issue number51
DOIs
StatePublished - 26 Dec 2014

Bibliographical note

Publisher Copyright:
© 2014 American Chemical Society.

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