Synthesis of Ultrathin Hexagonal Palladium Nanosheets

Prem F. Siril , Laurence Ramos (1) , Patricia Beaunier , Pierre Archirel , Arnaud Etcheberry , Hynd Remita

1 LCVN - Laboratoire des colloïdes, verres et nanomatériaux

Ultrathin palladium hexagonal nanosheets were synthesized in emulsions constituted of droplets of toluene containing Pd complexes in water and stabilized by CTAB as surfactant and in quaternary mesophases formed by water, toluene containing Pd complexes, CTAB, and a cosurfactant. We have identified slow reduction and nucleation provided by CO and adsorption at the CTAB interface as key factors for the formation of Pd nanosheets. These nanosheets exhibit a broad absorption band from the visible to the near-infrared region.

Mots clés: SHAPE-CONTROLLED SYNTHESIS; PLATINUM NANOPARTICLES; COUPLING REACTIONS; SELECTIVE HYDROGENATION; ELECTRONIC-STRUCTURE; PD NANOCRYSTALS; PARTICLE-SIZE; NANOSTRUCTURES; MONODISPERSE; FABRICATION

Domaines: Matériaux

Prem F. Siril, Laurence Ramos, Patricia Beaunier, Pierre Archirel, Arnaud Etcheberry, et al.. Synthesis of Ultrathin Hexagonal Palladium Nanosheets. Chemistry of Materials, 2009, 21, pp.5170-5175. ⟨10.1021/cm9021134⟩. ⟨hal-00514224⟩