SERS技术研究不同酸度下TU与ClO_4^-在金电极上的共吸附

SERS Studies on Coadsorption of Thiourea and ClO - 4 at Au Electrodes in Solutions at Various pH

ＳＥＲＳ技术研究不同酸度下ＴＵ与ＣｌＯ－４在金电极上的共吸附姚建林袁亚仙曹佩根顾仁敖（苏州大学化学系苏州２１５００６）田中群（厦门大学化学系固体表面物理化学国家重点实验室厦门３６１００５）ＳＥＲＳＳｔｕｄｉｅｓｏｎＣｏａｄｓｏｒｐｔｉｏｎｏｆＴ...

Abstract Thiourea (TU) coadsorbed with ClO - 4 at gold electrodes both in neutral and acidic solutions has been studied using Surface Enhanced Raman Spectroscopy (SERS). The SERS results indicate clearly that this coadsorption are stronger in acidic solutions than in neutral solutions. TU adsorbed at the Au electrode surface through the sulphur atom. The coadsorption of TU with ClO - 4 may be through at amino group (NH 2) in neutral solutions, and the protonated amino group (NH + 3) in acidic solutions respectively.