Open AccessControlled Synthesis and Characterization of Nobel Metal Nanoparticles
Author(s) -
Huixiao Hei,
Rui Wang,
Xiaojun Liu,
Limin He,
Guizhen Zhang
Publication year - 2012
Publication title -
soft nanoscience letters
Language(s) - English
Resource type - Journals
eISSN - 2160-0600
pISSN - 2160-0740
DOI - 10.4236/snl.2012.23007
Subject(s) - nanoparticle , ethylene glycol , materials science , noble metal , transmission electron microscopy , particle size , metal , rhodium , chemical engineering , palladium , polyol , dynamic light scattering , platinum , particle size distribution , nanotechnology , particle (ecology) , platinum nanoparticles , catalysis , chemistry , organic chemistry , composite material , metallurgy , oceanography , geology , engineering , polyurethane
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