【摘要】 <正>表面增强喇曼散射（SERS）效应,能提供吸附在金属表面上的分子结构信息,日益受到人们的重视.在研究SERS的诸多体系中,以电解池内经电化学氧化还原循环（ORC）处理的电极表面作为SERS活性表面,迄今仍是人们感兴趣的.本文采用典型的三电极电解池及传统的ORC处理,测量吸附在银电极上的苯甲酸的喇曼光谱.实验研究了电极预处理和溶液pH值对SERS效应的影响,与银胶和银膜上吸附苯甲酸的SERS光谱比较,本实验得到了频移为1284cm^-1的C-OH伸缩振动模的SERS光谱.用表面活性中心和表面碳模型可定性解释本文的实验结果.更多还原

【Abstract】 Surface enhanced Raman scattering (SEES) effect of benzoic acid adsorbed at silver electrode surface is investigated, and SEES spectra of Ag/0.02 M C6H5COOH+0.1 Na2SO4 have been recorded. Enhancement factor is estimated at 1.1*.106. The pretreating of electrode and the pH of solution which affect enhancement are discussed. SEES spectra of benzoic acid recorded from various SEES active systems are compared. Experimental results can be qualitatively explained by surface active site and surface carbon model.更多还原