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N‐Heterocyclic Carbene‐Modified Au–Pd Alloy Nanoparticles and Their Application as Biomimetic and Heterogeneous Catalysts
Author(s) -
Tegeder Patricia,
Freitag Matthias,
Chepiga Kathryn M.,
Muratsugu Satoshi,
Möller Nadja,
Lamping Sebastian,
Tada Mizuki,
Glorius Frank,
Ravoo Bart Jan
Publication year - 2018
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.201803274
Subject(s) - diphenylacetylene , catalysis , alloy , carbene , nanoparticle , selectivity , solvent , materials science , heterogeneous catalysis , chemistry , chemical engineering , organic chemistry , nanotechnology , engineering
The preparation of water‐soluble, N‐heterocyclic‐carbene‐stabilized Au–Pd alloy nanoparticles by a straightforward ligand exchange process is presented. Extensive analysis revealed excellent size retention and stability over years in water. The alloy nanoparticles were applied as biomimetic catalysts for aerobic oxidation of d ‐glucose, for which monometallic Au and Pd nanoparticles showed no or negligible activity. The alloy nanoparticles were further applied as titania‐supported heterogeneous catalysts for the mild hydrogenation of nitroarenes and the semihydrogenation of 1,2‐diphenylacetylene with a solvent‐dependent selectivity switch between E ‐ and Z ‐stilbene.