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Sustainable Synthesis of Nanomaterials Using Microwave irradiation
Citation:
VARMA, R. S. Sustainable Synthesis of Nanomaterials Using Microwave irradiation. Presented at 43rd Annual Symposium, International Microwave Power Institute, Washington, DC, July 08 - 10, 2009.
Impact/Purpose:
To info the public
Description:
The presentation summarizes our recent activity in MW-assisted synthesis of nanomaterials under benign conditions. Shape-controlled aqueous synthesis of noble nanostructures via MW-assisted spontaneous reduction of noble metal salts using -D-glucose, sucrose, and maltose will be presented. A general MW method has been developed that accomplishes the cross-linking reaction of poly (vinyl alcohol) (PVA) with metallic systems such as Pt, Cu, and In; bimetallic systems, namely Pt-In, Ag-Pt, Pt-Fe, Cu-Pd, Pt-Pd and Pd-Fe; and SWNT, MWNT, and C-60. The strategy is extended to the formation of biodegradable carboxymethyl cellulose (CMC) composite films with noble nanometals; such metal decoration and alignment of carbon nanotubes in CMC is possible using MW approach which enables the shape-controlled bulk synthesis of Ag and Fe nanorods in poly (ethylene glycol). MW hydrothermal process delivers magnetic nanoferrites and micro-pine structured catalysts are also obtainable in water from readily available metal salts. The sustainable generation of nano particles and their applications in catalysis and environmental remediation will be highlighted.
