论文部分内容阅读
运用电化学循环伏安 ,石英晶体微天平 (EQCM )和原位FTIR反射光谱等方法研究了酸性介质中乙醇在碳载纳米Pt膜电极上吸附和氧化行为 .结果表明 ,乙醇的电氧化与溶液酸碱性及电极表面氧物种有密切的关系 ,并指出乙醇电催化氧化是通过解离吸附产物和反应中间体双途径机理进行的 .在实验条件下 ,经原位FTIR反射光谱检测 ,解离吸附产物为CO ,反应中间体主要有CH3COOH和CH3CHO等物种 .
Electrochemical cyclic voltammetry, quartz crystal microbalance (EQCM) and in situ FTIR reflectance spectroscopy were used to study the adsorption and oxidation behavior of ethanol on carbon-supported nano-Pt film electrode in acidic medium. The results showed that the electrooxidation of ethanol and the solution Acidity and alkalinity of the electrode surface and the oxygen species on the surface of the electrode. It is pointed out that the electrocatalytic oxidation of ethanol is carried out by the mechanism of two-way dissociation of the adsorbed product and the intermediate of the reaction. Under the conditions of in-situ FTIR spectroscopy, Adsorption product is CO, the reaction intermediates are mainly CH3COOH and CH3CHO and other species.