Green approach for self-assembly of platinum nanoparticles into nanowires in aqueous glucose solutions

A completely green synthetic approach has been developed for the reduction and stabilization of Pt nanoparticles followed by self-assembly into nanowires in an aqueous beta-D-glucose solution. Hydrothermal treatment initiated the reduction of Pt(IV) ions dispersed in a pH 8.0 beta-D-glucose Solution. The Pt nanoparticles were stabilized with oxidized glucose molecules. The Pt nanoparticles continued growing into nanowires followed by transformation into Cubic nanocrystals with a tough needle Surface. Evidence from TEM and FT-IR spectra reveal that carboxylate groups, which are generated by the oxidation of beta-D-glucose, strongly interact with and stabilize the surface of these Pt nanostructures. (c) 2009 Elsevier B.V. All rights reserved.