Synthesis and characterization of Prussian blue@platinum nanoparticle hybrids from a mixture solution of platinum nanocatalyst and ferric ferricyanide

In the present study, platinum nanoparticles modified with Prussian blue (PB) have been synthesized by a heterogeneous catalytic reaction. Transmission electronic microscopy (TEM) confirmed the deposition of nanoclusters around the surfaces of platinum particles, and spectroscopic studies verified that the molecular composition of the nanoclusters was dominantly PB and a minority of platinum ferricyanide. Thus, it was shown that the platinum particles behaved not only as catalysts for the growth of PB, but also as a reactant to generate a PB analogue complex. Moreover, potassium was not detected in the final product, demonstrating that the molecular nature of PB was in the “water-insoluble” form, Fe43+[FeII(CN)6]3.

Graphical abstractAn interconnected network of nanoclusters has been prepared from reacting platinum nanoparticles with ferric ferricyanide. Spectroscopic studies show a dominance of Prussian blue and a minority of Prussian blue analogue, platinum ferricyanide, in the nanoclusters.Figure optionsDownload full-size imageDownload as PowerPoint slide