Thermal control of the defunctionalization of supported Au25(glutathione)18 catalysts for benzyl alcohol oxidation.
Zahraa ShahinHyewon JiRodica ChiriacNadine EssayemFranck RataboulAude DemessencePublished in: Beilstein journal of nanotechnology (2019)
Au25(SG)18 (SG - glutathione) clusters deposited on ZrO2 nanoparticles have been used as a catalyst for benzyl alcohol oxidation. Calcination was performed at different temperatures to study the ligand and particle size effect on the catalytic activity. In contrast to most gold nanoclusters which have to be completely defunctionalized for maximum catalytic activity, the partially defunctionalized Au25(SG)18@ZrO2 catalyst, thermally treated at 300 °C, exhibits full conversion of benzyl alcohol within 15 h under atmospheric pressure with 94% selectivity towards benzaldehyde.
Keyphrases
- reduced graphene oxide
- visible light
- sensitive detection
- highly efficient
- alcohol consumption
- gold nanoparticles
- ionic liquid
- room temperature
- metal organic framework
- hydrogen peroxide
- carbon dioxide
- magnetic resonance
- quantum dots
- particulate matter
- computed tomography
- newly diagnosed
- fluorescent probe
- silver nanoparticles