Controlling the shape of metal nanoparticles is important for both fundamental science as well as industrial applications. Developing methods for synthesizing shape-controlled nanoscale particles in aqueous solvents is paramount for large scale production. The chemical and physical properties of anisotropic metal nanoparticles are unique relative to their isotropic counterparts. However, the synthesis of well defined anisotropic nanoparticles remains challenging. We report a facile, room temperature synthetic procedure for nanocrystalline anisotropic ruthenium, platinum and palladium particles. Vigilant control of the reactant concentrations and reaction conditions provided uniform anisotropic nanoparticles in high yield. Characterization of the nanoparticles was carried out using high resolution transmission electron microscopy (HRTEM), x-ray diffraction (XRD), small angle electron diffraction (SAED) and energy dispersive spectroscopy (EDS). The particles displayed unusual optical and catalytic properties relative to their bulk counterparts.

Green synthetic routes toward shape-controlled nanoscale materials

244th National Meeting (2012)

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