表面增强拉曼光谱研究硫脲衍生物与ClO_4^-的共吸附行为

Surface Enhanced Raman Spectroscopic Studies on Coadsorption of Derivatives of Thiourea with ClO - 4

表面增强拉曼光谱研究硫脲衍生物与ＣｌＯ－４的共吸附行为顾仁敖１姚建林１袁亚仙１钟起玲２田中群３（１苏州大学化学系苏州２１５００６）（２江西师范化学系南昌３３００２７）（３厦门大学固体表面物理化学国家重点实验室，化学系厦门３６１００５）Ｓｕｒｆａｃｅ...

Abstract In this paper we have studies methyl thiourea (MTU) and 1 Ally1 2 thiourea (ATU) coadsorbed with ClO - 4 respectively at Ag electrodes. The SERS intensity time profiles show that the intensities of the different SERS bands have surprisingly different response rates to the potential step. The response rates of the group of the adsorbed species which is very near to the electrode surface is faster. The results also indicate that MTU is vertically adsorbed on Ag electrode surface via the S atom, while ATU is adsorbed via the S atom with the molecule leaning fowards to the surface.