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.

Figure optionsDownload 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.