| dc.description.abstract | In this work, monodispersed, well-shaped platinum (3.2 - 6.4 nm), rhodium (2.4 - 5.1 nm), and palladium (3.2 - 5.3 nm)
nanoparticles capped with poly(vinylpyrrolidone) (PVP) were synthesized by a polyol reduction method in an ethylene
glycol solution at temperature of 190˚C. The influences of synthetic parameters on the size and morphology of the noble
metal nanoparticles have been systematically investigated. The noble metal nanoparticles were characterized by means
of UV-vis, laser scattering particle size distribution analysis (LSPSDA) and transmission electron microscopy (TEM).
The experimental results showed that the particle size of metal nanoparticles, the morphology of which was spherical,
increased with the raise of metal precursor concentration as well as the amount of PVP. The optimal molar ratio of
PVP/metal and metal precursor concentration for the fabrication of Pt, Rh, and Pd nanoparticles with uniform distribution
were 10 and 0.1 mM, respectively. The morphologies of the Rh nanoparticles with the size of 5.1 nm were polygons,
including hexagons, pentagons, and triangles. | en_US |
