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本文运用循环伏安方法研究十六烷基三甲基溴化铵(CTAB)在Au(111)电极上的吸附行为.给出CTAB在Au(111)电极上的循环伏安曲线,其0.18 V、0.27 V有2对可逆的特征电流尖峰,均受扩散控制,且与卤素离子种类有关.研究表明,烷基铵阳离子的吸脱附及吸附层相转变与Au(111)电极表面结构密切相关.
Cyclic voltammetry was used to study the adsorption behavior of cetyltrimethylammonium bromide (CTAB) on Au (111) electrode. The cyclic voltammetry (CV) curve of CTAB on Au (111) , Two pairs of reversible characteristic current spikes at 0.27 V were controlled by diffusion and were related to the species of halogen ions.The results showed that the adsorption and desorption of alkylammonium cation and the phase transition of adsorbed layer were closely related to the surface structure of Au (111) electrode .