苯在铑电极上吸附的表面增强拉曼散射光谱研究

SERS Study of the Adsorption of Benzene on Rhodium Electrode

利用成熟的电极处理方法成功地获得了苯在粗糙铑电极上电化学吸附的拉曼谱图 .详细探讨了电极电位、电解质等因素对苯的电化学吸附的影响 .结果表明 ,苯分子吸附到粗糙铑电极上后 ,表面拉曼谱图与纯苯本体谱图的差别很大 ,说明吸附后的苯分子在几何及电子结构上发生了巨大变化 .苯分子可能以 1 ,3-环己二烯的结构吸附于铑电极表面 .

The Raman spectra of benzene electrochemical adsorption on a roughened Rh electrode have been studied successfully by proper electrode treatment process. The results show that, there is a great difference between the Raman spectra of pure benzene liquid and that of benzene molecule adsorbed on the roughened Rh electrode. It is indicated that the geometry and electron structures have changed greatly after benzene molecule was adsorbed on the roughened Rh electrode. Benzene molecule may be adsorbed on the surface of the roughened Rh electrode with a structure like 1,3- cyclohexadiene. The dependence of benzene electrochemical adsorption on the electrode potential and the electrolyte has been studied in this paper.