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Towards catalytically active porous graphene membranes with pulsed laser deposited ceria nanoparticles.

Porous graphene with catalytically active ceria nanometre-size particles were prepared using pulsed laser deposition (PLD) of nanoparticles on graphene produced through chemical vapour deposition (CVD). The reported process provided porous graphene containing ceria nanoparticles as confirmed by HR TEM and XPS. Isotopically labelled 13 C graphene was employed to study desorption of the species containing carbon. Methanol adsorption was utilised to probe the nature of the catalytic activity of prepared ceria decorated graphene. The important role of graphene support for the stabilization of reduced ceria nanoparticles was finally confirmed. Increased dehydrogenation activity of graphene with ceria nanoparticles leading to CO and H 2 formation was demonstrated.