间苯二胺的电化学及紫外-可见薄层光谱电化学研究

Electrochemical and Spectroelectrochemical Study of m-Phenylenediamine

研究了间苯二胺 (MPD)在金电极和 Sn O2 ∶ F膜电极上的循环伏安行为及在 Sn O2 ∶F膜电极上的紫外 -可见薄层光谱电化学性质 .获得了间苯二胺在 Sn O2 ∶F膜电极上电氧化的薄层恒电势电解 -吸收光谱图 ,采用双对数法对紫外 -可见薄层光谱电化学数据进行了处理 .研究了间苯二胺的光谱及电化学性质 ,求得了间苯二胺的动力学修饰式量电位 E0 和 αn等热力学参数 .

Electrochemical and spectroelectrochemical properties of m-phenylenediamine(MPD) were studied by means of cyclic voltammetry and UV-Vis thin-layer spectroelectrochemistry. The cyclic voltammogram of MPD at gold disc electrode has an oxidative peak as well as a reductive peak. But at SnO 2∶F film electrode, it has only an oxidative peak, which is an irreversible process. Potential-controlled UV-Vis thin-layer spectra of MPD at SnO 2∶F film optically transparent electrode were recorded and a double logarithmic method was applied to treat the spectroelectrochemical data. From the double logarithmic plot, the kinetically modified formal potential E 0=0.766 and αn=0.41 were obtained.