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

Authors

  • Bineta Keita,

    1. Groupe d'Electrochimie et de Photoélectrochimie, Laboratoire de Chimie Physique, UMR 8000, CNRS, Université Paris-Sud XI, Bâtiment 350, 91405 Orsay Cedex, France
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  • L. R. Brudna Holzle,

    1. Groupe d'Electrochimie et de Photoélectrochimie, Laboratoire de Chimie Physique, UMR 8000, CNRS, Université Paris-Sud XI, Bâtiment 350, 91405 Orsay Cedex, France
    2. Universidade Federal do Pampa, Campus de Bagé, Rua Carlos Barbosa, s/n°, Getúlio Vargas Bagé – RS, CEP 96412-420, Brazil
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  • Rosa Ngo Biboum,

    1. Groupe d'Electrochimie et de Photoélectrochimie, Laboratoire de Chimie Physique, UMR 8000, CNRS, Université Paris-Sud XI, Bâtiment 350, 91405 Orsay Cedex, France
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  • Louis Nadjo,

    1. Groupe d'Electrochimie et de Photoélectrochimie, Laboratoire de Chimie Physique, UMR 8000, CNRS, Université Paris-Sud XI, Bâtiment 350, 91405 Orsay Cedex, France
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  • Israel M. Mbomekalle,

    1. Institut Lavoisier, UMR 8180, CNRS, Université de Versailles Saint-Quentin, 45, avenue des Etats-Unis, 78035 Versailles Cedex, France
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  • Sylvain Franger,

    1. Laboratoire de Physico-chimie de l'Etat Solide, ICMMO, UMR 8182, CNRS, Université Paris-Sud XI, Bâtiment 410, 91405 Orsay Cedex, France
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  • Patrick Berthet,

    1. Laboratoire de Physico-chimie de l'Etat Solide, ICMMO, UMR 8182, CNRS, Université Paris-Sud XI, Bâtiment 410, 91405 Orsay Cedex, France
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  • François Brisset,

    1. ICMMO, UMR 8182 CNRS, Université Paris-Sud XI, 91405 Orsay Cedex, France
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  • Frederic Miserque,

    1. Commissariat à l'Energie Atomique (Saclay)/Département de Physico-Chimie/Laboratoire Réactivité des Surfaces et Interfaces, Bâtiment 391, 91191 Gif-sur-Yvette cedex, France
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  • Georges A. Ekedi

    1. Groupe d'Electrochimie et de Photoélectrochimie, Laboratoire de Chimie Physique, UMR 8000, CNRS, Université Paris-Sud XI, Bâtiment 350, 91405 Orsay Cedex, France
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Abstract

A novel and very effective wet chemical route for the preparation of metal dendritic nanostructures was developed by starting from VOSO4 and Ag2SO4 (or K2PdCl4) in aqueous solution at room temperature. No template or surfactant was used. VOSO4 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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