Pt-Ru-P was prepared by the chemical reduction method using sodium hypophoshite as a reducing agent on Vulcan XC 72 and multi-walled carbon nano-tubes (MWCNTs). Sodium citrate was added as the stabilizer during electro-catalyst preparation. The electro-catalytic activity towards methanol oxidation in acidic medium was studied by cyclic voltammetry and linear sweep voltammetry. Pt-Ru-P/MWCNT showed excellent activity compared to that of Pt-Ru-P/C. This may be attributed to the effectiveness of the MWCNTs acting as good catalyst support material. The particle size of both electro-catalysts obtained with the transmission scanning electron microscopy (TEM) ranged between 2-4nm desirable for the direct methanol fuel cells.
Reference:
Modibedi, M, Masombuka, T, Hietkamp, S and Mathe, M. Methanol electro-oxidation on Pt-Ru-P/C and Pt-Ru-P/MWCNT in acidic medium. European Fuel Cell Forum, Lucerne, Switzerland, 29 June – 2 July 2009
Modibedi, R. M., Masombuka, T., Hietkamp, S., & Mathe, M. K. (2009). Methanol electro-oxidation on Pt-Ru-P/C and Pt-Ru-P/MWCNT in acidic medium. The European Fuel Cell Forum (EFCF). http://hdl.handle.net/10204/5613
Modibedi, Remegia M, T Masombuka, S Hietkamp, and Mahlanyane K Mathe. "Methanol electro-oxidation on Pt-Ru-P/C and Pt-Ru-P/MWCNT in acidic medium." (2009): http://hdl.handle.net/10204/5613
Modibedi RM, Masombuka T, Hietkamp S, Mathe MK, Methanol electro-oxidation on Pt-Ru-P/C and Pt-Ru-P/MWCNT in acidic medium; The European Fuel Cell Forum (EFCF); 2009. http://hdl.handle.net/10204/5613 .
