摘要
为研究Pt-TiO2/C电极表面吸附稀土铕离子对CO吸附和氧化的影响,用循环伏安法研究了CO在Pt-TiO2/C、Pt-TiO2/Eu3+/C电极上的氧化,发现吸附稀土Eu3+后,电极表面对CO的吸附明显减弱.CO在电极表面的氧化过电位减小,在酸性溶液中CO的起始氧化电位及氧化峰电位分别负移200mV和2103+mV;中性溶液中氧化峰电位负移380mV.Eu3+在电极表面的吸附有利于CO在电极表面的氧化.
The electrochemical behavior of CO on Pt-TiO2/C and Pt-TiO2/Eu3+/C electrodes was investigated by cyclic voltammetry. It has been found that the Pt-TiO2/Eu3+/C electrode adsorbed CO weaker than Pt-TiO2/C electrode both in acid and neutral electrolyte. It also reduces the overpotential to the CO oxidation on the Pt-TiO2/Eu3+/C electrode. The Pt/Eu3+/C electrode has lower onset potential and peak potential about 200 mV and 210 mV than Pt-TiO2/C electrode for CO oxidation respectively in acid solution and lower peak potential about 380 mV in neutral electrolyte. It shows that CO oxidation on Pt-TiO2/Eu3+/C is much easier than on Pt-TiO2/C electrode both in acid and neutral electrolyte.
出处
《哈尔滨工业大学学报》
EI
CAS
CSCD
北大核心
2005年第5期658-660,共3页
Journal of Harbin Institute of Technology
基金
国家重点基础研究发展规划资助项目(973-G2000026408)
国家高技术研究发展计划资助项目(863-2003AA517062)
国家自然科学基金资助项目(20373068
20433060)
黑龙江省教育厅基金资助项目(10531082)
江苏省科技厅高新技术基金资助项目(BG200302)
江苏省教育厅高
关键词
电催化
CO氧化
铕
Carbon monoxide
Chemical modification
Electrodes
Europium
Oxidation
