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The influence of different thiol ligands on the activity and particularly the stability of colloidal platinum nanoparticles is studied by using the catalytic semihydrogenation of 3-hexyne as model reaction. It is shown that a reduced ligand concentration during functionalization leads to an increase in the catalyst activity, while the stability of the particles as colloids in solution is surprisingly...
We describe here an original methodology related to the “build-the-bottle-around-the-ship” approach yielding a highly ordered silica matrix containing regularly distributed Pt nanoparticles (NPs) located inside the silica walls, Pt@{walls}SiO 2 . The starting colloidal solution of crystalline Pt nanoparticles was obtained from Pt(dba) 2 (dba=dibenzylidene acetone) and 3-chloropropylsilane...
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