SNL  Vol.2 No.3 , July 2012
Controlled Synthesis and Characterization of Nobel Metal Nanoparticles
ABSTRACT
In this work, monodispersed, well-shaped platinum (3.2 - 6.4 nm), rhodium (2.4 - 5.1 nm), palladium (3.2 - 5.3 nm) nanoparticles capped with poly(vinylpyrrolidone) were synthesized by a polyol reduction method in an ethylene glycol solution at temperature of 190℃. 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 metals 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.

Cite this paper
H. Hei, R. Wang, X. Liu, L. He and G. Zhang, "Controlled Synthesis and Characterization of Nobel Metal Nanoparticles," Soft Nanoscience Letters, Vol. 2 No. 3, 2012, pp. 34-40. doi: 10.4236/snl.2012.23007.
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