| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1641086 | Materials Letters | 2016 | 5 Pages |
•Au/GQDs composites were uniformly immobilized on Fe3O4 nanoparticles.•Au/GQDs/Fe3O4 efficiently catalyze the solvent-free oxidation of veratryl alcohol.•Fe3O4 made the recovery of Au/GQDs conveniently and enhance their catalytic activity.•The oxidation of veratryl alcohol to veratraldehyde show superb selectivity.
Nanocomposites of graphene quantum dots and Au nanoparticles (GQDs/Au) are immobilized on the Fe3O4 nanoparticles, forming GQDs/Au/Fe3O4 ternary composites. The as-prepared ternary composites exhibit superparamagnetic property rendering them easy to be isolated from the reaction mixture. More importantly, they show superb catalytic activity for solvent-free oxidation of VA and other alcohols that contain an aromatic benzyl group, to the corresponding aldehydes exclusively with air as oxidant. The great stability and selectivity of the GQDs/Au/Fe3O4 indicate that they might be applicable catalysts for the oxidation of aromatic alcohols.
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