摘要
用常规Raman光谱、电化学原位表面增强拉曼散射光谱 (SERS)和时间分辨SERS光谱 (TRSERS)研究了甲基硫脲 (MTU)分别在HClO4 、H2 SO4 、HNO3以及它们两两混合的酸性介质中与一种或两种弱吸附无机阴离子的共吸附行为 .发现MTU是以S端按σ配位化学吸附键的方式 ,在 - 0 .2～ - 0 .7V的较正电位区间偏向于甲基一侧倾斜吸附在银电极表面上 ;在 - 0 .8～ - 1.2V的较负电位区间 。
By means of normal Raman Spectroscopy,in situ electrochemical surface enhancced Raman Spectroscopy (SERS) and time resolved surface enhanced Raman Spectroscopy(TRSERS),we have studied the coadsorption of 1 methyl 2 thiourea(MTU) with one or two kinds of inorganic anions in perchloric acid,sulphuric acid,and nitric acid medium respectively.It has been found that MTU trends to the side of CH 3,is adsorbed slantingly on the silver surface in more positive potential region from -0.2 to -0.7 V,and is adsorbed flat in more negative potential region from -0.8 to -1.2 V,through S end in σ band.
出处
《江西师范大学学报（自然科学版）》
CAS
2000年第1期66-70,共5页
Journal of Jiangxi Normal University(Natural Science Edition)
基金
国家自然科学基金!资助项目 (2 94 6 30 10 )
关键词
一甲基硫脲
无机阴离子
共吸附
拉曼光谱
SERS
methyl 2 thiourea
inorganic anion
coadsorption
surface enhanced Raman spectroscopy
