September 22, 2011 16:15 - 17:15
Empa, Dübendorf, Theodor-Erismann-Auditorium, VE102
Liquid-phase routes to inorganic functional materials in organic solvents are nowadays a well-established and flexible alternative to aqueous methods, offering advantages such as high crystallinity, well-defined and uniform particle morphologies, control over the surface chemistry, and robust and reproducible synthesis protocols. A special feature of these nonaqueous routes is that organic reactions provide the monomers for the nucleation of the inorganic products, and thus particle formation can simply be monitored by studying the organic chemistry.
The talk will give an overview of nonaqueous synthesis routes to various inorganic materials such as metal oxides, metal sulfides and metal phosphates, together with a discussion of selected chemical formation mechanisms. It will be shown how the use of microwave irradiation greatly accelerates the organic and inorganic processes, offering an efficient tool to prepare powders, nanoparticulate films and doped materials within just a few minutes. Some of these compounds can be applied in lithium ion batteries and in chemoresistive CO2 sensors. Finally, a modular approach to prepare multicomponent aerogels by self-assembly of preformed nanoparticles will be presented.
The language of the presentation is English.
Free entrance, guests are welcome
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Dr. Anne Satir
Tel: 058 765 4562