Journal
ELECTROCHIMICA ACTA
Volume 54, Issue 8, Pages 2234-2238Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2008.10.042
Keywords
Carbon nanostructures; Pt nanoparticles; Electrocatalyst; Methanol electrooxidation; Voltammetry
Categories
Funding
- Spanish MCyT [MAT2008-00407, MAT2007-60621]
- FEDER
Ask authors/readers for more resources
Highly graphitic carbon nanocoils (GCNC) were synthesized through the catalytic graphitization of carbon microspheres obtained by the hydrothermal carbonization of different saccharides (sucrose, glucose and starch) and were used as a support for Pt nanoparticles. The Pt nanoparticles were deposited by means of a polymer mediated-polyol method. The Pt catalysts were characterized both physically (XRD. TEM, HRTEM and XPS) and electrochemically (electrooxidation of methanol in an acid medium). The electrocatalysts thus prepared show a high dispersion of Pt nanoparticles, with diameters in the 3.0-3.3 nm range and a very narrow particle size distribution. These catalytic systems possess high electroactive Pt surface areas (up to 85 m(2) g(-1) Pt) and they exhibit large catalytic activities towards methanol electrooxidation (up to 201 A g-1 Pt). Moreover, they have a high resistance against oxidation, which is considerably greater than that of the Pt/Vulcan system. (C) 2008 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available