Tanakorn RatanaPongsaton AmornpitoksukWaret VeerasaiMahidol UniversityPrince of Songkla University2018-08-202018-08-202006-09-01ScienceAsia. Vol.32, No.3 (2006), 253-260151318742-s2.0-33750398082https://repository.li.mahidol.ac.th/handle/20.500.14594/23940Nano-sized of Pt and PtRu particles on solid polymer electrode (SPE) membrane were prepared by the modified Takenaka-Torika (T-T) method. The morphological characteristics and catalyst compositions were also studied on the Pt- and PtRu-SPEs. The electrodes were characterized using electrochemical measurements, scanning electron microscope with electron dispersive microscope (SEM-EDX) and X-ray diffraction analysis. The well-dispersed Pt and PtRu alloy nanoparticles with crystallite size of 12-6 nm were obtained in the preparation. The differences in morphology of the nano-, micro-structure and composition of these catalysts effected the electro-catalytic activity of methanol electro-oxidation reaction. The electrochemical result showed that the mole ratio between Ru and Pt at 0.10 was the best condition for the methanol electro-oxidation reaction in partial cell study.Mahidol UniversityMultidisciplinaryArticleSCOPUS10.2306/scienceasia1513-1874.2006.32.253