Abstract: The scanning electron microscopy,X-ray diffractometry and electrochemical tech-niques were used to study the surface structure and catalytic activity of highly dispersed plat-inum supported on glassy carbon electrode.The results demonstrated that after high temper-ature treatment the dispersed platinum showed a tendency of monoorientation on the surfaceof glassy carbon, and yieldied large size microcrystals with regular morphology.The high temperature treated Pt/GC was stable and possessed a relatively high catalytic activity to-wards methanol oxidation.

Key words: glassy carbon, platinized platinium, methanol oxidation, electrocatalytic activity