Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.


Issue 47, 2012
Previous Article Next Article

Facile synthesis of a platinum–lead oxide nanocomposite catalyst with high activity and durability for ethanol electrooxidation

Author affiliations

Abstract

Aimed at searching for highly active and stable nano-scale Pt-based catalysts that can improve significantly the energy conversion efficiency of direct ethanol fuel cells (DEFCs), a novel Pt–PbOx nanocomposite (Pt–PbOx NC) catalyst with a mean size of 3.23 nm was synthesized through a simple wet chemistry method without using a surfactant, organometallic precursors and high temperature. Electrocatalytic tests demonstrated that the as-prepared Pt–PbOx NC catalyst possesses a much higher catalytic activity and a longer durability than Pt nanoparticles (nm-Pt) and commercial Pt black catalysts for ethanol electrooxidation. For instance, Pt–PbOx NC showed an onset potential that was 30 mV and 44 mV less positive, together with a peak current density 1.7 and 2.6 times higher than those observed for nm-Pt and Pt black catalysts in the cyclic voltammogram tests. The ratio of current densities per unit Pt mass on Pt–PbOx NC, nm-Pt and Pt black catalysts is 27.3 : 3.4 : 1 for the long-term (2 hours) chronoamperometric experiments measured at −0.4 V (vs. SCE). In situ FTIR spectroscopic studies revealed that the activity of breaking C–C bonds of ethanol of the Pt–PbOx NC is as high as 5.17 times that of the nm-Pt, which illustrates a high efficiency of ethanol oxidation to CO2 on the as-prepared Pt–PbOx NC catalyst.

Graphical abstract: Facile synthesis of a platinum–lead oxide nanocomposite catalyst with high activity and durability for ethanol electrooxidation

Back to tab navigation

Supplementary files

Article information


Submitted
11 Jun 2012
Accepted
16 Oct 2012
First published
22 Oct 2012

Phys. Chem. Chem. Phys., 2012,14, 16424-16432
Article type
Paper

Facile synthesis of a platinum–lead oxide nanocomposite catalyst with high activity and durability for ethanol electrooxidation

W. Yang, H. Wang, D. Chen, Z. Zhou and S. Sun, Phys. Chem. Chem. Phys., 2012, 14, 16424
DOI: 10.1039/C2CP41944K

Social activity

Search articles by author

Spotlight

Advertisements