Synthesis of short palladium nanoparticle chains and their application in catalysis

A one step polyol process has been used to synthesize linear assemblies of Pd nanoparticles (NPs). TEM images show that highly linearly ordered Pd NP chains (about 8.5 nm in diameter) have been formed, and the inter-particle distance is about 1.4 ± 0.6 nm. The Pd NP chains can be obtained by adding NH3·H2O and prolonging the heating time. A scaffolding mechanism is proposed to understand the short-ranged order of the Pd NP chains. The as-obtained Pd nanochains at Pd NCh/MWCNTs/GCE displayed high activity in the electrocatalytic oxidation of NO.

Images and microstructure of the typical linear assembly of Pd NPs was studied by TEM and HRTEM.Figure optionsDownload as PowerPoint slide