Effect of functionalized carbon as Pt electrocatalyst support on the methanol oxidation reaction
FTIRS and XPS spectra showed that after oxidative treatments using H2SO4 + HNO3 and HNO3 solutions the Vulcan XC-72R carbon support has been found to be more hydrophilic and richer in oxygen-containing functional groups. Consequently, the Pt electrocatalyst prepared on those functionalized carbon materials further to having good dispersion of metal presented a significant improvement of the electrocatalytic activity due to the synergistic effect between the metal nanoparticles and oxygenated groups on functionalized carbon.
Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideResearch highlights▶ Spectra showed that after treatments the carbon has been found to have oxygen group. ▶ BET results showed that the functionalized carbon surface was affected. ▶ Uniform dispersion of Pt particles on the surface of carbon was achieved. ▶ Pt catalyst on functionalized carbon presented an improvement of the activity. ▶ Synergistic effect between the metal and oxygenated groups on carbon was found.
Journal: Applied Catalysis B: Environmental - Volume 102, Issues 3–4, 22 February 2011, Pages 496–504