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Greener Pathways to Organics and Nanomaterials: Sustainable Applications of Nano-Catalysts(South Korea)
Citation:
Kim, Y., J. Kou, N. Baig, AND R. Varma. Greener Pathways to Organics and Nanomaterials: Sustainable Applications of Nano-Catalysts(South Korea). Presented at 111th Annual Korean Chemical Society Meeting, Seoul, SOUTH KOREA, April 17 - 19, 2013.
Impact/Purpose:
Invited presentation at the 111th Annual Korean Chemical Society Meeting, April 17-19, 2013, Korea.
Description:
Sustainable chemical synthetic activity involving alternate energy input, and greener reaction medium in aqueous or solvent-free conditions will be summarized for heterocyclic compounds, coupling reactions, and a variety of name reactions; these reactions are catalyzed by basic water or recyclable and reusable magnetic nano-catalysts in aqueous media using microwave (MW) irradiation. Vitamins B1, B2, C, and tea and wine polyphenols which function both as reducing and capping agents, provide extremely simple, one-pot, green synthetic methods to bulk quantities of nanomaterials in water. Shape-controlled synthesis of noble nanostructures via MW-assisted spontaneous reduction of noble metal salts using sugars will be presented. A general method has been developed for the cross-linking reaction of poly (vinyl alcohol) (PVA) with metallic systems; bimetallic systems, and SWNT, MWNT, and C-60. The strategy is extended to the formation of biodegradable carboxymethylcellulose (CMC) composite films with noble nanometals; such metal decoration and alignment of carbon nanotubes in CMC is possible using MW approach which also 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 obtainable in water from readily available metal salts. Sustainable route to nanoparticles using polyphenols from winery waste, or biodiesel byproduct, glycerol and their applications in catalysis,toxicity and environmental remediation will be highlighted. The comprehensive approach fulfills Green Chemistry Principles adequately and aims to generate and utilize sustainable functional nano-catalysts that will find large scale use with extreme level of waste minimization.
