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四磺酸酞菁镍阴离子(NiPcTS~(-4))在水溶液中可借助离子交换进入阳离子表面活性剂双十二烷基二甲基溴化铵(DDAB)薄膜电极,从而形成NiPCTS~(-4)-DDAB 薄膜电极.循环伏安实验表明,在KBr溶液中,该薄膜电极有一对良好的还原氧化峰,阴阳极峰电位分别为-0.83V和-0.74V(vs.SCE).本文探讨了该薄膜电极的电化学行为,测定了该体系的电化学参数如电荷传递扩散系数D_(ct)和非均相电极反应速率常数k等.可将NiPcTs~(-4)-DDAB薄膜电极应用于催化各种卤代乙酸的电还原,估计并比较了它们的表观催化反应速率常数.
The nickel phthalocyanine tetranulfonate anion (NiPcTS ~ (-4)) can be ion exchanged into the cationic surfactant dodecyldimethylammonium bromide (DDAB) membrane electrode in aqueous solution to form NiPCTS ~ (- 4) -DDAB thin-film electrode.The cyclic voltammetry experiments showed that there was a pair of good reduction-oxidation peak in the KBr solution, and the peak potentials of cathode and anode were -0.83V and -0.74V (vs.SCE) The electrochemical behavior of the thin-film electrode was measured and the electrochemical parameters of the system, such as the charge-transfer diffusion coefficient D ct and the heterogeneous electrode reaction rate constant k, were determined. The NiPcTs 4 -1 -DDAB thin film electrode To catalyze the electro-reduction of various haloacetic acids, their apparent catalytic reaction rate constants were estimated and compared.