A Simple Method for Producing Colloidal Palladium Nanocrystals: Alternating Voltage-Induced Electrochemical Synthesis

Alternating voltage-induced electrochemical synthesis (AVIES) gave well-dispersed, size-controlled, single-crystalline, colloidal Pd nanocrystals (Pd-NCs). An alternating voltage was applied to 2 Pd wires inserted in an electrolyte solution containing capping ligands. Pd-NCs were directly ejected from the Pd electrodes through cathodic reduction of the PdO intermediates. The Pd-NCs were soluble in either polar or non-polar solvents, depending on the nature of the capping ligands.