Nanoparticle separation and deposition processing using gas expanded liquid technology

[摘要] Most currently employed nanoparticle post-synthesis processing techniques are solvent intensive and time consuming. This article reviews the development of highly tunable CO2 gas-expanded liquid (GXL) systems to process nanoparticles in a sustainable and efficient manner. The highly adjustable physico-chemical properties of these GXLs provide unique opportunities to control nanoparticle dispersability and precipitation through simple variations in applied CO2 pressure. This article illustrates that these tunable solvent systems can be used to create high quality, wide-area nanoparticle thin films and can also be used for the size-selective fractionation of ligand stabilized metallic nanoparticles. Recent advancements in the development of models that accurately predict nanoparticle dispersability in these tunable solvent systems are also described.

[学科分类] 工业化学