甲酸在铂钌电极上电催化氧化的原位SERS研究  

In-situ SERS Study of the Electrooxidation of Formic Acid on Pt-Ru Electrode

作　　者：杨熊元[1] 张兵[1] 黄芃[1] 丁月敏[1] 叶鹏[1] 钟起玲[1] 任斌[2] 田中群[2] 

机构地区：[1]江西师范大学化学化工学院,南昌330022 [2]厦门大学化学系固体表面物理化学国家重点实验室,厦门361005

出　　处：《光散射学报》2006年第1期1-4,共4页The Journal of Light Scattering

基　　金：教育部重点科技基金(02080);厦门大学固体表面物理化学国家重点实验室基金(9905)

摘　　要：采用循环伏安法和电化学原位表面增强拉曼光谱(in-situ SERS)技术研究了甲酸在铂钌电极上解离吸附与氧化行为。发现甲酸在铂钌电极上也能自发解离吸附。铂钌电极上CO的氧化峰电位与粗糙铂电极相比负移了180mV,把CO氧化完毕的电极电位亦负移了300 mV,从分子水平证实铂钌电极对甲酸电催化氧化的活性比纯铂电极更高。该研究结果表明,SERS技术可望拓展为研究电催化体系的有效工具。The adsorption and electrooxidation behavior of formic acid on Pt - Ru electrode was studied by CV and in- slut SERS. The results show formic acid can dissociate on Pt - Ru electrode. The oxidation potention of CO and that of CO was oxidazed all over on Pt- Ru down-shift 180mV and 300mV compared to rough Pt electrode and the potention that CO was oxidatized overall also downshift, it confirms that the catalytic - oxidation activity of Pt - Ru is higher than pure Pt on the level of molecular. The results also demonstate that SERS can improve the study of electrocatalytic systems on the molecular level.

关 键 词：甲酸 铂钌电极 解离吸附 电催化氯化 表面增强拉曼光谱 

分 类 号：O657.37[理学—分析化学]