【摘要】 利用表面增强拉曼光谱（ＳＥＲＳ）和极化曲线的方法研究了硫脲和尿素在Ｈ２ＳＯ４溶液中银电极上的吸附行为．结果表明：硫脲参与了银的阳极溶解反应．尿素在银电极表面上发生了缩合反应，产物为缩二脲，缩二脲以质子化的形式物理吸附在银表面上更多还原

【Abstract】 Adsorption behaviors of thiourea and urea at the silver electrode in sulphuric acid solution were investigated using polarization curves and Raman spectroscopy. It was shown that thiourea took part in the reaction of anodic dissolution of siver,and was parallelly adsorbed on the surface of the silver electrode. Urea was found to have a condensation reaction at the roughened silver electrode. Biuret is the product of condensation reaction, and is adsorbed physically through the protonated way on the surface of the silver electrode.更多还原