Size Effect on Crystal Morphology of Faceted Face-Centered Cubic Fe Nanoparticles
The Journal of Physical Chemistry C2009Vol. 113(22), pp. 9450–9453
Citations Over TimeTop 12% of 2009 papers
Abstract
Faceted metal nanoparticles have attracted much attention owing to their size and shape enhanced unique physical and chemical properties. Here we successfully synthesized face-centered cubic (fcc) Fe nanoparticles with diverse morphologies including icosahedron, decahedron, 5-fold twinned nanorod, tetrahedron and cube. A size effect on the particle morphologies of these faceted fcc-Fe nanoparticles was revealed. Small sizes (5−13 nm) favor icosahedral nanoparticles; decahedron and 5-fold twinned nanorods are favored at intermediate sizes (12−164 nm), and triangular plate and cube at large sizes such as 200 nm. This size-morphology dependence correlation of faceted fcc-Fe nanoparticles can be well explained by thermodynamic calculations.
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