Synthesis of platinum nanoparticles on substrates of various chemical natures using supercritical carbon dioxide

Resumo

A method for synthesizing platinum nanoparticles on a dispersed substrate using supercritical carbon dioxide was applied on substrates of various chemical natures: silicon carbide, titanium nitride, and tin dioxide. On all the substrates, materials with narrow uniform platinum nanoparticle size distributions were obtained. The platinum nanoparticle size distribution on each of the substrates was studied. It was shown that the platinum particle sizes are within a narrow range with an average particle size of about 3 nm and scarcely dependent on the chemical nature of the substrate.