Monodisperse platinum-ruthenium (PtRu) nanoparticles of 2.4 ± 0.5 nm in diameter are prepared by co-reduction of platinum acetylacetonate and ruthenium acetylacetonate by 1,2-hexadecanediol in the presence of oleic acid and oleylamine stabilizers. High-resolution transmission electron microscopic (HRTEM) images, electron diffraction (ED), selected area electron diffraction (SAED) and X-ray diffraction (XRD) analyses indicated that spherical PtRu (ratio =1/1) nanoparticles are highly crystalline and had a face centered cubic structure.
The PtRu nanoparticles supported on a Vulcan carbon exhibited a superior catalytic activity in electrooxidation of methanol by cyclic voltammetry (CV) to that of commercially available PtRu catalysts.
