苯胺和对氯苯胺在银电极上吸附行为的SERS研究

苯胺和对氯苯胺在银电极上吸附行为的SERS研究 SERS STUDY ADSORPTION OF ANILINE AND p-CHLOROANILINE ON Ag ELECTRODE 徐庆中 Xu Qingzhong 1 2 3 first-author 吴秉亮 Wu Bingliang 1 2 3 徐知三 Xu Zhisan 1 2 3 武汉大学化学系 武汉大学化学系 Chemistry Department of Wuhan University Chemistry Department of Wuhan University 武汉大学分析测试中心,武汉 武汉大学分析测试中心,武汉 ,430072 ,430072 本文用SERS技术研究了弱酸性溶液中苯胺在银电极上的吸附行为,表明它们都以分子状态通过N原子（或芳环体系）化学吸附在银电极上,随着电极电势正移过—0.7V（vs.SCE）,其吸附取向均由近乎平躺变为近乎垂直于电极表面。文中还讨论了吸附在银电极上的苯胺、对氯苯胺分子的对称性的变化。 Surface enhanced ramam scttering （SERS） was applied to study the adsorption of aniline and p-chloroaniline in weak acidic soiution on polycrystalline Ag electrode. The results suggested a chemical adsorption of molecule mode with the interaction between N-atom （or aromatic electron system） and Ag electrode. With potentials positive over -- 0.7V （vs. SEC）, the molecule of aniline and p-cloroaniline adsorbed on Ag electrode changed nealy to a perpendicular orientation from a flat orientation. The change of molecular symmetry of aniline and p-chloroanilion adsorbed on Ag electrode was discussed also. 苯胺 对氯苯胺 吸附 表面增强拉曼光谱 aniline p-chloroaniline adsorption SERS O625.631 1993-02-01 2021-04-01 2