期刊
JOURNAL OF PHYSICAL CHEMISTRY C
卷 113, 期 22, 页码 9450-9453出版社
AMER CHEMICAL SOC
DOI: 10.1021/jp903496c
关键词
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资金
- National 973 Project of China
- Chinese National Nature Science Foundation
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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