Anomalous aggregation growth of palladium nanosphere with SPR band in visible range

The morphology and properties of nanostructures are significantlyinfluenced by the chemical coordination during their growthprocedure. Using small molecule N-vinyl pyrolidone as stabilizer,this paper introduces a new strategy for synthesis of palladiumnanospheres, which has a novel surface plasmon resonance band in thevisible range. An aggregation growth mode was observed in the growthprocess. More specifically, the growth rate increases withincreasing concentration of stabilizer. The absorption in visibleregion suggests new optical applications for these Pd nanospheres,such as photocatalysis, photothermal heating and surface enhancedRaman scattering.