N‐Heterocyclic Carbene‐Modified Au–Pd Alloy Nanoparticles and Their Application as Biomimetic and Heterogeneous Catalysts

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 catalyst...

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Bibliographic Details
Published in:Chemistry : a European journal 2018-12, Vol.24 (70), p.18682-18688
Main Authors: Tegeder, Patricia, Freitag, Matthias, Chepiga, Kathryn M., Muratsugu, Satoshi, Möller, Nadja, Lamping, Sebastian, Tada, Mizuki, Glorius, Frank, Ravoo, Bart Jan
Format: Article
Language:English
Subjects:
bimetallic nanoparticles
Biomimetics
carbenes
Catalysis
Catalysts
Chemistry
Gold
Gold base alloys
hydrogenation
Nanoalloys
Nanoparticles
nanozyme
Oxidation
Palladium
Selectivity
Stability analysis
Stilbene
transfer hydrogenation
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Summary: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. It's all about the mix! The preparation of water‐soluble, N‐heterocyclic‐carbene‐stabilized Au–Pd alloy nanoparticles is presented. The particles were stable over years and were used as biomimetic catalysts in water or as heterogeneous catalysts in hydrogenation reactions.
ISSN:0947-6539
1521-3765
DOI:10.1002/chem.201803274