Department of Chemistry, University of Idaho, Moscow, Idaho 83844, USA.
Langmuir. 2010 Jan 19;26(2):1117-23. doi: 10.1021/la902108s.
Silver sulfide and cadmium sulfide nanoparticles of controllable sizes are synthesized using a water-in-hexane microemulsion method and stabilized by dodecanethiol. The stabilized metal sulfide nanoparticles can be deposited homogenously on flat substrates forming ordered 2-D arrays in supercritical fluid carbon dioxide (Sc-CO(2)). The use of Sc-CO(2) leaves the particles unaffected by dewetting effects caused by traditional solvents and produces uniform arrays. The Sc-CO(2) deposition technique is capable of filling nanoparticles in nanostructures of silicon wafers which is difficult to accomplish by conventional solvent evaporation methods.
采用水包 hexane 型微乳液法合成了尺寸可控的硫化银和硫化镉纳米粒子，并通过十二硫醇进行稳定。稳定后的金属硫化纳米粒子可以均匀地沉积在平整基底上，在超临界二氧化碳（Sc-CO2）中形成有序的 2-D 排列。使用 Sc-CO2 可避免由传统溶剂引起的脱湿效应对颗粒的影响，从而产生均匀的排列。与传统的溶剂蒸发方法相比，Sc-CO2 沉积技术能够将纳米颗粒填充到硅片的纳米结构中，这是很难实现的。
