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GREENER AND CONTROLLED SYNTHESIS OF NOBLE NANOSTRUCTURES IN AQUEOUS MEDIA USING MICROWAVE IRRADIATION
Citation:
NADAGOUDA, M. N. AND R. S. VARMA. GREENER AND CONTROLLED SYNTHESIS OF NOBLE NANOSTRUCTURES IN AQUEOUS MEDIA USING MICROWAVE IRRADIATION. Presented at 232nd ACE National Meeting, San Francisco, CA, September 10 - 14, 2006.
Impact/Purpose:
To inform the public
Description:
Microwave-assisted spontaneous reduction of gold salts is described using sugar solutions such as alpha-D-glucose, sucrose and maltose, etc. The expeditious reactions are conducted in aqueous media using microwave irradiation wherein the reduction occurs within 30 to 60 seconds depending on the type of sugar solution employed. Maltose and sucrose afforded nanostructures of different shapes such as prisms, hexagons, etc. However, in case of alpha-D-glucose self-assembled spherical particles are obtained. The so synthesized nanostructures of various shapes and sizes were characterized using UV spectroscopy, scanning electron microscopy (SEM), and transmission electron microscopy (TEM). This general method is extendible to other noble metals such as silver, palladium and platinum and the variation in nanoparticle formation for these noble metals will be discussed.