Preparation of platinum supported on carbon blacks with different surface chemical characteristics
2005 (English)In: Proceedings of the 3rd International Conference on Fuel Cell Science, Engineering, and Technology, ASME Press, 2005, 235-238 p.Conference paper (Refereed)
In a study of the preparation of Pt/C eletrocatalysts, a set of modified Vulcan XC-72R carbon black supports have been prepared by nitric acid or hydrogen peroxide oxidation, or thermal treatment in nitrogen flow. The supports obtained by these methods had largely identical pore structure, but different from the amount of surface oxygen-containing groups. The physical and surface chemical nature of the supports was characterized by XPS, BET, FTIR and acid-base titration. The above pre-treatment-carbon supported platinum catalysts were prepared by impregnation-reduction method with formaldehyde as the reducing agent, H2PtCl6 as precursor. The effect of the amount of surface oxygen-containing groups of Vulcan XC-72R carbon black on Pt/C catalysts dispersion was studied by the characterization with XRD and TEM. It has been found that decreasing the amount of surface oxygen-containing groups on carbon supports favored the platinum dispersion on the Pt/C catalysts.
Place, publisher, year, edition, pages
ASME Press, 2005. 235-238 p.
Carbon black, Electrocatalysts, Platinum, Surface oxygen-containing groups
IdentifiersURN: urn:nbn:se:kth:diva-156575ISI: 000243400200032ScopusID: 2-s2.0-27744525592ISBN: 0791837645OAI: oai:DiVA.org:kth-156575DiVA: diva2:767231
3rd International Conference on Fuel Cell Science, Engineering, and Technology, 2005, 23 May 2005 through 25 May 2005, Ypsilanti, MI, United States
QC 201412012014-12-012014-12-012014-12-01Bibliographically approved