摘要
运用电化学石英晶体微天平 (EQCM)研究了正丁醇在Pt、Pt/Sbad和Pt/Sad电极上的电氧化过程 ,结果表明正丁醇的氧化与电极表面氧化物种有着密切的关系。Pt电极表面Sb修饰原子能在较低的电位下吸附氧 ,催化正丁醇的氧化在较低电位下进行。相反 ,Pt电极表面S修饰原子的氧化会消耗表面氧化物种 ,从而抑制正丁醇的电氧化。
The oxidation processes of n-butanol (n-BL) on Pt,Pt/Sbad and Pt/Sad electrodes were studied using an electrochemical quartz crystal microbalance (EQCM).The results demonstrated that the oxidation of 1-BL depended strongly on the oxidation state of the electrode surface.At Pt/Sbad electrode, Sb atoms which were irreversibly adsorbed on Pt electrode surface could be oxidized at relatively low potential,so it could catalyze the oxidation of 1-BL.On the contrary,at Pt/Sad electrode,the oxidation of S atoms which were irreversibly adsorbed on Pt electrode surface consumed oxygen species on electrode surface.As a consequence the oxidation of 1-BL was inhibited by the presence of Sad.
出处
《精细化工》
EI
CAS
CSCD
北大核心
2000年第z1期13-16,共4页
Fine Chemicals
基金
国家自然科学基金 !2 983 3 0 60
教育部博士点专项科研基金 !19990 3 840 3 资助项目
关键词
石英晶体微天平
修饰电极
正丁醇
electrochemical quartz crystal microbalance
modified electrode
n-butanol
