Nano Archive

Synthesis and structural, magnetic and electrochemical characterization of PtCo nanoparticles prepared by water-in-oil microemulsion

Solla-Gulln J.and Gómez, Elvira and Vallés, Elisa and Aldaz, Antonio and Feliu, Juan (2010) Synthesis and structural, magnetic and electrochemical characterization of PtCo nanoparticles prepared by water-in-oil microemulsion. Journal of Nanoparticle Research, 12 (4). pp. 1149-1159.

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Official URL: http://dx.doi.org/10.1007/s11051-009-9680-4

Abstract

PtCo nanoparticles with homogeneous size (around 3-4 nm) have been synthesized in a water-in-oil microemulsion of water/polyethylenglycol-dodecylether (BRIJÂ?30)/n-heptane. X-ray diffraction study revealed the formation of a cubic phase with a gradual decrease of the cell parameter with increasing cobalt incorporation in the crystalline lattice of platinum. In relation to their magnetic properties, the PtCo nanoparticles present a superparamagnetic behaviour even after annealing, although higher permeability was induced by the thermal treatment. Finally, the electrocatalytic activity of the particles towards oxalic acid oxidation in H2SO4 was evaluated. The Pt74Co26 nanoparticles showed the highest reactivity for this reaction.

Item Type:Article
ID Code:9168
Deposited By:Prof. Alexey Ivanov
Deposited On:13 May 2010 12:54
Last Modified:13 May 2010 13:19

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