摘要
八十年代以来,人们除继续研究表面增强拉曼散射(SERS)效应的复杂机理和发现有关新体系外,逐渐将注意力集中在将SERS 技术应用于生物、分析和电化学研究。
In-situ time resolved Raman spectroscopy has been used to study the coadsorption ofthiourea(TU)and ClO_4^- at Ag electrodes.The time resolved SERS intensities were monitoredfollowing electrode potential steps.As the electrode potential was stepped from-0.3V to-0.9V,the SERS intensities of TU were able to follow the potential change immediately.However,pro-longed time was needed for the intensities to follow the step from-0.9V to-0.3V.Significantdifference of the rate of intensity change for different SERS bands of TU was observed even in sucha potential step,which may be related to the changes in orientation of TU or its configurationwith the coadsorbed ClO_4^-.
出处
《物理化学学报》
SCIE
CAS
CSCD
北大核心
1993年第6期721-723,共3页
Acta Physico-Chimica Sinica
基金
国家自然科学基金
关键词
SERS
硫脲
吸附
银
电极
电位
Surface enhanced Raman scattering
Times resolved
Thiourea
Coadsorption
Ag electrodes
