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Green Wet Chemical Route for the Synthesis of Silver and Palladium Dendrites

✍ Scribed by Bineta Keita; L. R. Brudna Holzle; Rosa Ngo Biboum; Louis Nadjo; Israel M. Mbomekalle; Sylvain Franger; Patrick Berthet; François Brisset; Frederic Miserque; Georges A. Ekedi

Publisher
John Wiley and Sons
Year
2011
Tongue
English
Weight
394 KB
Volume
2011
Category
Article
ISSN
1434-1948

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✦ Synopsis

Abstract

A novel and very effective wet chemical route for the preparation of metal dendritic nanostructures was developed by starting from VOSO~4~ and Ag~2~SO~4~ (or K~2~PdCl~4~) in aqueous solution at room temperature. No template or surfactant was used. VOSO~4~ serves as the reducing agent for the silver salt, and the resulting silver nanoparticles and nanocrystallites are then arranged into dendritic structures. The morphologies of the dendrites are found to be heavily influenced both by the molar ratio and the concentrations of the reactants. Observation of symmetric and asymmetric dendrites with variations of these parameters supports the proposal that diffusion and oriented attachment of silver nanoparticles or crystallites might compete, to various extents, and dictate the final morphologies of dendritic nanostructures. To the best of our knowledge, this is the first example of a surfactant‐free, template‐free, fully inorganic wet chemical route to metal dendritic structures. The method was also successful in the preparation of palladium nanodendrites.

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