Premium
Synthesis of Water‐Soluble Palladium Nanoparticles Stabilized by Sulfonated N‐Heterocyclic Carbenes
Author(s) -
Asensio Juan M.,
Tricard Simon,
Coppel Yannick,
Andrés Román,
Chaudret Bruno,
de Jesús Ernesto
Publication year - 2017
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201702204
Subject(s) - palladium , catalysis , thermal decomposition , decomposition , chemistry , nanoparticle , styrene , carbene , precipitation , organometallic chemistry , aqueous solution , particle size , metal , copolymer , polymer chemistry , organic chemistry , materials science , nanotechnology , polymer , physics , meteorology
A strategy involving the decomposition of palladium(II) organometallic complexes with sulfonated N‐heterocyclic carbene ligands leads to the formation of stable and water‐soluble Pd nanoparticles. Three different methodologies (thermal decomposition, reduction under 13 CO atmosphere, and reduction with H 2 ) gave particles with different shapes and sizes, ranging from 1.5 to 7 nm. The structures of the organometallic intermediates and organic decomposition products were elucidated by NMR spectroscopy. To check the accessibility of the surface, the nanoparticles were tested as catalysts for the chemoselective hydrogenation of styrene in water. An effect of the particle size on the catalyst activity was observed. The aqueous phase was recycled up to ten times without any precipitation of metallic palladium.