Two-Phase Microfluidic Droplet Flows of Ionic Liquids for the Synthesis of Gold and Silver Nanoparticles
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- 作者：Laura L. Lazarus ; Carson T. Riche ; Brandon C. Marin ; Malancha Gupta ; Noah Malmstadt ; Richard L. Brutchey
- 刊名：ACS Applied Materials & Interfaces
- 出版年：2012
- 出版时间：June 27, 2012
- 年：2012
- 卷：4
- 期：6
- 页码：3077-3083
- 全文大小：387K
- 年卷期：v.4,no.6(June 27, 2012)
- ISSN：1944-8252
文摘
Droplet-based microfluidic platforms have the potential to provide superior control over mixing as compared to traditional batch reactions. Ionic liquids have advantageous properties for metal nanoparticle synthesis as a result of their low interfacial tension and complexing ability; however, droplet formation of ionic liquids within microfluidic channels in a two-phase system has not yet been attained because of their complex interfacial properties and high viscosities. Here, breakup of an imidazolium-based ionic liquid into droplets in a simple two-phase system has for the first time been achieved and characterized by using a microchannel modified with a thin film fluoropolymer. This microfluidic/ionic liquid droplet system was used to produce small, spherical gold (4.28 卤 0.84 nm) and silver (3.73 卤 0.77 nm) nanoparticles.