CO在Pt/Eu^(3+)/C电极上的电氧化

CO OXIDATION ON Pt/Eu~ (3+)/C ELECTRODE

CO在 Pt/Eu3+ /C电极上的氧化在温度较低时 ,电极表面对 CO的吸附都明显减弱 ,吸附量减少 .在酸性溶液和中性溶液中 CO的起始氧化电位比在 Pt/C电极上分别负移 1 30 m V和 1 70 m V.温度高有利于 CO在电极表面的氧化 .60℃时 CO在 Pt/Eu3+ /C电极表面的氧化峰电位在酸性和中性溶液中分别是负移 1 40m V和 1 30 m V.Pt/Eu3+ /C电极无论在酸性溶液还是在中性溶液中对 CO的氧化都有电催化作用 .

CO electrooxidaton on Pt/Eu 3+/C electrodes has the tendency that adsorbed CO weaker and less amount than Pt/C electrode. The onset potential of CO oxidation were negative shift about 130 mV and 170 mV respectively in acid and neutral electrolyte at low temperature. Higher temperature is good for CO oxidation on both Pt/C and Pt/Eu 3+/C electrodes. The CO oxidation peak potential on Pt/Eu 3+/C electrode were 140 mV and 130 mV lower than on Pt/C electrode respectively in acid and neutral electrolyte at 60℃. The Pt/Eu 3+/C electrode shows high electrocatalyst activity to CO oxidation in both acid and neutral electrolyte.