FUEL 86 |
| Ionic liquids are relatively novel solvents with remarkable physical properties such as very low vapor pressures (in most cases), high conductivity, high chemical and thermal stability and wide electrochemical windows of up to 6 Volt, depending on the substrate. In most cases ionic liquids are based on organic cations and anions like, e.g., the 1-Butyl-1-methylpyrrolidinium cation and the bis(trifluoromethylsulfonyl)imide anion, and theoretically 1012 – 1018 different liquids have been predicted. For an introduction on the physical chemistry of ionic liquids we would like to refer to a recent review article (1). Due to their extraordinary physicochemical properties ionic liquids are ideally suited to make nanoparticles and nanomaterials by electrochemical means. Bulk nanocrystalline metals can be made by classical electrodeposition, and interestingly different ionic liquids lead to different crystallite sizes (2). With glow discharge plasmas, which stably burn over an ionic liquid, isolated nanoparticles of e.g. silver and copper with crystal sizes in the nanometer regime can easily be made (3). (1)Endres, F.; Zein El Abedin, S. Phys. Chem. Chem. Phys. 2006, 8, in press (2) Moustafa E.,; Zein El Abedin, S., Hempelmann R.; Natter H,; Endres F. ChemPhysChem 2006, 7, in press (3)Janek J.; Endres F, et al, submitted to Angewandte Chemie
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Green Chemistry for Fuel Synthesis and Processing
9:00 AM-12:10 PM, Monday, 11 September 2006 Palace -- California Parlor, Oral
Sci-Mix
Division of Fuel Chemistry |